Carbon & Alloy Steel Quick Couplers

Last Updated: April 1, 2025

Description

Carbon and alloy steel quick couplers are devices designed to connect and disconnect fluid lines quickly and efficiently. These couplers are typically used in systems where the rapid exchange of attachments or components is necessary, providing a secure and leak-proof connection. They are made from carbon steel, which is alloyed with higher levels of carbon for increased durability and strength, and other metals to improve corrosion resistance and durability.

Working Principle

Quick couplers operate by allowing two components to be joined or separated without the need for tools. The mechanism typically involves a male and female component that lock together securely. The design ensures that the connection is tight and leak-proof, which is crucial for maintaining system integrity. The usefulness of quick couplers lies in their ability to facilitate rapid changes in system configurations, thereby enhancing operational efficiency and reducing downtime.

Applications

Carbon and alloy steel quick couplers are used in a variety of applications. In construction, they are essential for excavators, allowing for the quick interchange of attachments such as digging, grading, and compacting tools, which maximizes productivity on site . They are also used in hydraulic systems, where high-pressure ratings are critical, and in gas fittings for explosive and noxious gases like propane .

Advantages over other Quick Couplers

Carbon and alloy steel quick couplers offer several advantages over other types of couplers. Their high resistance to heat and enhanced durability make them suitable for demanding environments. The alloying process improves their corrosion resistance, making them ideal for use with flammable gases and other fluids that require robust containment .

Limitations

One limitation of carbon and alloy steel quick couplers is their potential for failure if not properly maintained or if used beyond their specified pressure ratings. In construction applications, a failure can lead to costly downtime and safety hazards, such as the unintentional release of attachments .

Considerations

When selecting carbon and alloy steel quick couplers, several factors should be considered. Initial costs can vary based on the specific alloy composition and size requirements. Operating expenses may include regular maintenance to ensure the couplers remain in good working condition. Durability is generally high, but the specific environmental conditions and the type of fluids being transported can affect longevity. Replacement and maintenance costs should be factored into the overall cost of ownership, as regular inspections and potential part replacements are necessary to prevent failures and ensure safety.

113 Results
Grooved Quick Release Couplings GEC-QRB/GEC-QRE Series -- GEC-QRB200
from Kuriyama of America, Inc.

FEATURES AND ADVANTAGES. Connect together grooved end pipes or hose connections. Underwriters laboratories listed. Faster and easier than threaded, welded, or flanged connections. Quick-release version provides faster connecting and disconnecting hoses or pipes. Quick-release version is supplied... [See More]

  • Material: Iron (Cast/Ductile); Steel; Ductile Iron
  • English Size: 2.000
  • Design Units: English
Direct Gauge Adapter, Test 12 (S12.65×1.5)
from HydraCheck Inc.

The direct gauge adaptor is designed to make the gauge connection to a pressure test coupling safe, effortless, and spill-free. The female swivel end of the direct gauge adaptor is an S12.65 ×1.5 connection. Use in conjunction with the S12.65 ×1.5 test connector (Test Point). [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • Temperature: -4 to 212
Adapter, Qd 1/2" Cplg To 1/4" Plug, Zinc-Plated Steel -- 936-7150-025
from Petersen Products Co.

Connection Type 1/2" Cplg to 1/4" Plug. Country of Origin USA. Description Adapter, Quick Disconnect 1/2" Coupling to 1/4" Plug, Zinc Plated Steel. Material Zinc-Plated Steel. Pressure, Inlet. Max. PSI 300 Psi (20.68 Bar) @ 72 ° F (22.2 ° C). Sage Subcategory Number W910. Shipping Wt. 1 Lb... [See More]

  • Material: Steel; Zinc-Plated Steel
Hydraulic Quick Connect Couplings -- 110747 [H6-62-BSPP from Parker Hannifin Corporation]
from RS Components, Ltd.

3/4in BSPP quick action MS coupling [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
Direct Gauge Adaptor, M16x2
from HydraCheck Inc.

The direct gauge adapter is designed to make the gauge connection to a pressure test coupling safe, effortless, and spill-free. The female swivel end of the direct gauge adapter is a M16x2 connection. Use in conjunction with the M16x2 test connector (Test Point). Specifications: Available in... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250 to 0.500
Adapter, Qd, 1/4" Cplg To 1/2" Plug, Brass And Plated Steel -- 936-7125-050
from Petersen Products Co.

Connection Type Quick Disconnect 1/4" Cplg to 1/2" Plug. Country of Origin USA. Description Adapter, Quick Disconnect, 1/4" Cplg to 1/2" Plug. Material Brass and Zinc-Plated Steel. Pressure, Inlet. Max. PSI 300 psi (20.68 bar). Sage Subcategory Number W910. Shipping Wt. 1 Lb (0.45 Kg) [See More]

  • Material: Brass/Bronze; Steel; Brass and Zinc-Plated Steel
Hydraulic Quick Connect Couplings -- 110775 [H2-63-BSPP from Parker Hannifin Corporation]
from RS Components, Ltd.

1/4in BSPP quick action MS nipple [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Hose Union
from HydraCheck Inc.

The hose union is used to join two microbore hose assemblies together, or to connect a microbore hose end to a direct gauge adaptor. Both male ends have a M16x2 connection. Specifications: Material: Steel. Maximum Working Pressure: 9137 PSI (630 bar). Connect Under Pressure: 5800 PSI (400 bar). [See More]

  • Material: Steel
  • Temperature: -4 to 212
  • Application: Hydraulic
Quick Connector, 1/4" Plug, Zinc-Plated, 1/4" Mnpt, 300 Psi -- 912-8000-025000
from Petersen Products Co.

Material Zinc-Plated Steel. Max Flow Rate 35 SCFM @ 20 PSI. Pressure, Inlet. Max. PSI 300 Psi (20.68 Bar) at 72 ° F (22.2 ° C). Shipping Wt. 0.5 Lb (0.23 Kg). Type Industrial Interchange [See More]

  • Material: Steel; Zinc-Plated Steel
Hydraulic Quick Connect Couplings -- 110804 [H6-63-BSPP from Parker Hannifin Corporation]
from RS Components, Ltd.

3/4in BSPP quick action MS nipple [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
Hose/Gauge Bulkhead Adaptor, M16x2
from HydraCheck Inc.

The hose/gauge bulkhead adaptor makes it convenient for you to “solid mount ” a pressure gauge to a console or bulkhead. The microbore hose assembly conveniently screws onto the bulkhead adaptor. The male bulkhead side has a M16x2 connection. Specifications: Material: Steel. Maximum... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250 to 0.500
Hydraulic Quick Connect Couplings -- 1222307 [CR400 from ENERPAC]
from RS Components, Ltd.

3/8NPT Female Quick Release Coupling [See More]

  • Material: Steel; Steel (Dust Cap)
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
HSP Conversion Adapter – M16x2 To 5/8?-14 BSF (HSP & Steck)
from HydraCheck Inc.

This adapter has been constructed to enable an adaptation between the 5/8 ″-14 BSF system (HSP) to the world wide used M16x2 system. Just screw our adapter onto the HSP – test coupling. The result is a regular M16x2 system connection. Now you can use your hoses and fittings from the... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.625
Hydraulic Quick Connect Couplings -- 1222308 [CH604 from ENERPAC]
from RS Components, Ltd.

3/8NPT Male Quick Release Coupling [See More]

  • Material: Steel; Steel (Dust Cap)
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
PD Series – Test Coupler -- PD Series
from HydraCheck Inc.

The PD Series test coupler is designed to make the gauge connection to a PD Series test nipple, safe, effortless and spill-free!. Screw the test coupler directly onto the 1/4 ″ NPT connection on your pressure gauge for quick, easy pressure readings from any test nipple. Used in conjunction... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.125 to 0.250
Hydraulic Quick Connect Couplings -- 173758 [QHPA16-G4X6-C from Parker Hannifin Corporation]
from RS Components, Ltd.

QUICK COUPLING,MALE NIPPLE:,HY [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
PD Series – Test Nipples
from HydraCheck Inc.

PD Series couplings provide easy connection for pressure gauges and/or specialized diagnostic equipment. Typically PD nipples are permanently mounted in the system at threaded test ports, in rigid tubing, or in hose assemblies. PD couplers are then attached to test instruments. Used in conjunction... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375 to 0.562
Hydraulic Quick Connect Couplings -- 173759 [QHPA16-G4X8-C from Parker Hannifin Corporation]
from RS Components, Ltd.

QUICK COUPLING,MALE NIPPLE:,HY [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
Pressure Test Coupling with 90° Elbow Connection (M16x2)
from HydraCheck Inc.

It can be installed at any point of the hydraulic system were pressures needs to be monitored. The system is designed and manufactures according to ISO 15171-2 and is fully interchangeable with several other brands. Both male and female swivel ends have a M16x2 connection. Specifications: Material:... [See More]

  • Material: Steel
  • Temperature: -4 to 212
  • Application: Hydraulic
Hydraulic Quick Connect Couplings -- 173761 [QHPA53-G4X3-C from Parker Hannifin Corporation]
from RS Components, Ltd.

QUICK COUPLING,FEMALE COUPLER: [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
Snap-Check Pressure Test Coupler
from HydraCheck Inc.

Snap-Check identifies operating pressure surges without the need for a permanently mounted gauge. Applications include mobile equipment, injection molding machines, oil and gas equipment, marine vessels and production machinery. The Snap-Check test couplers have a maximum working pressure of 8700... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Hydraulic Quick Connect Couplings -- 173762 [QHPA56-G4X6-C from Parker Hannifin Corporation]
from RS Components, Ltd.

QUICK COUPLING,FEMALE COUPLER: [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
Snap-Check Pressure Testing Nipple
from HydraCheck Inc.

The Snap-Check pressure testing system, monitors and diagnoses fluid power systems in a snap. Snap-Check identifies operating pressure surges without the need for a permanently mounted gauge. Applications include mobile equipment, injection molding machines, oil and gas equipment, marine vessels and... [See More]

  • Material: Steel
  • Design Units: English; Metric
  • Application: Hydraulic
  • English Size: 0.125 to 0.562
Hydraulic Quick Connect Couplings -- 1891705 [C102651202 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/4" BSP FEMALE THREAD CEJN X65 ISO 1602 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Steel Test Point – Test 12 (S12.65×1.5)
from HydraCheck Inc.

Male coupling designed for monitoring and control of pressure. Test point connection is S12.65 ×1.5. Advantages to using the Test 12 coupling are system testing at working pressure, leakproof connection before piston valve is open, protective cap, and minimizes the introduction of... [See More]

  • Material: Steel; Steel, Zinc/Nickel-Plated
  • Design Units: English
  • Application: Hydraulic
  • Temperature: -4 to 392
Hydraulic Quick Connect Couplings -- 1891711 [C103651204 from CEJN Industrial Corporation]
from RS Components, Ltd.

3/8" BSP FEMALE THREAD CEJN X65 ISO 1602 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
Steel Test Point with 24° Taper/ O-Ring (DKO) – Test 20 (M16x2)
from HydraCheck Inc.

Male coupling designed for monitoring and control of pressure. Test point connection is M16x2.0. Advantages to using the Test 20 coupling are system testing at working pressure, leakproof before ball check is open, protective cap, and minimizes introduction of contamination in hydraulic system. Use... [See More]

  • Material: Steel; Steel, Zinc/Nickel-Plated
  • Design Units: Metric
  • Application: Hydraulic
  • Temperature: -4 to 392
Hydraulic Quick Connect Couplings -- 1891713 [C103651205 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/2" BSP FEMALE THREAD CEJN X65 ISO 1602 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.500
Steel Test Point, M16x2 (Minimess)
from HydraCheck Inc.

Male coupling designed for monitoring and control of pressure. Test point connection is M16x2.0. Advantages to using the Test 20 coupling are system testing at working pressure, leakproof before ball check is open, protective cap, and minimizes introduction of contamination in hydraulic system. Use... [See More]

  • Material: Steel
  • Design Units: English; Metric
  • Application: Hydraulic
  • English Size: 0.125 to 0.562
Hydraulic Quick Connect Couplings -- 1891716 [C105651205 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/2" BSP FEMALE THREAD CEJN X65 ISO 1602 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.500
X65 Range – Premium ISO 16028 Flat-Face Quick Couplings -- Series 365
from HydraCheck Inc.

CEJN Series 365 is a Flat-Face quick-connect coupling according to and exceeding the ISO 16028 Standard for low- and medium-pressure hydraulic applications. The Flat-Face design minimizes spillage during connection and disconnection. Series 365 couplings require only one hand for operation, making... [See More]

  • Material: Steel
  • Temperature: -22 to 212
  • Application: Hydraulic
Hydraulic Quick Connect Couplings -- 1891717 [C105651207 from CEJN Industrial Corporation]
from RS Components, Ltd.

3/4" BSP FEMALE THREAD CEJN X65 ISO 1602 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
Hydraulic Quick Connect Couplings -- 1891722 [C107651203 from CEJN Industrial Corporation]
from RS Components, Ltd.

1" BSP FEMALE THREAD CEJN X65 ISO 16028 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 1.000
Hydraulic Quick Connect Couplings -- 1891725 [C105251202 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/4" BSP FEMALE THREAD CEJN 525 HYDRAULI [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Hydraulic Quick Connect Couplings -- 1891726 [C105251204 from CEJN Industrial Corporation]
from RS Components, Ltd.

3/8" BSP FEMALE THREAD CEJN 525 HYDRAULI [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
Hydraulic Quick Connect Couplings -- 1891727 [C105251205 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/2" BSP FEMALE THREAD CEJN 525 HYDRAULI [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.500
Hydraulic Quick Connect Couplings -- 1891730 [C105251209 from CEJN Industrial Corporation]
from RS Components, Ltd.

1" BSP FEMALE THREAD CEJN 525 HYDRAULIC [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 1.000
Hydraulic Quick Connect Couplings -- 1891733 [C105251239 from CEJN Industrial Corporation]
from RS Components, Ltd.

1" BSP FEMALE/PRESSURE ELIM CEJN 525 HYD [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 1.000
Hydraulic Quick Connect Couplings -- 1891736 [C105256202 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/4" BSP FEMALE THREAD CEJN 525 HYDRAULI [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Hydraulic Quick Connect Couplings -- 1891742 [C105256234 from CEJN Industrial Corporation]
from RS Components, Ltd.

3/8" BSP FEMALE/PRESSURE ELIM CEJN 525 H [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
Hydraulic Quick Connect Couplings -- 1891744 [C105256237 from CEJN Industrial Corporation]
from RS Components, Ltd.

3/4" BSP FEMALE/PRESSURE ELIM CEJN 525 H [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
Hydraulic Quick Connect Couplings -- 1891745 [C105256239 from CEJN Industrial Corporation]
from RS Components, Ltd.

1" BSP FEMALE/PRESSURE ELIM CEJN 525 HYD [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 1.000
Hydraulic Quick Connect Couplings -- 1891746 [C102321452 from CEJN Industrial Corporation]
from RS Components, Ltd.

1/4" NPT MALE SCREW TO CONNECT CEJN 232 [See More]

  • Material: Steel; Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Diagnostic Coupling -- PD-02F-02FP
from Tompkins Industries, Inc.

Diagnostic Coupling. 1/8" Standard Size. Interchanges to Parker PD Series, Aeroquip FD90, ISO 15171-1 [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.125
Hansen 46-ST Quick Coupler Plated Steel -- 100000140
from Suttner America Company

Couplers are used anywhere high pressure connections are frequently connected and disconnected. Ideal for quick exchange of quick nozzles and spray guns. Series ST straight-through couplings are designed for use where minimum pressure drop is required and valving is not needed. [See More]

  • Material: Steel
  • English Size: 0.250
  • Design Units: English
2 Pc “A” Style Female Air Quick Couplers -- 0430258
from Princess Auto Limited

2 Pc “A ” Style Female Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250
Quick Disconnect Fitting - Twist Connect Plug -- D10037
from General Pump

General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have expanded to serve Vehicle Wash as well as many Industrial Applications... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Twist/Bayonet Fitting
  • Design Units: English; Metric
QUICK DISCONNECT COUPLINGS FLAT FACE ISO 16028 -- QC FF
from Gemels

Gemels has a division that produces quick disconnect couplings FLAT FACE, mostly used in earth movimg machines. [See More]

  • Material: Steel; Stainless
  • Design Units: Metric
  • Application: Hydraulic
  • Metric Size: 6.00 to 25.00
Adapter Couplers -- Series FIRG/ISO A Adapter
from Stucchi Inc.

Advantages of Adapters: Provides compatibility between old and new equipment. Avoids changing mismatched couplers. Bi-directional flow [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Flat Face Couplers
from DME Company

No-Spill coupling design, low air inclusion 2,500 PSI Operating pressure. Sleeve lock prevents accidental disconnection. Dust seal is designed into coupling to prevent dirt inclusion into hydraulic system. Low cost, high pressure [See More]

  • Material: Steel
  • Quick Coupler Valving: Nonspill
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- 210 Cupla
from Nitto Kohki U.S.A., Inc.

Standard hydraulic Cuplas for general purposes with a working pressure up to 20.6MPa. Low pressure loss, suitable for hydraulic equipment. General purpose hydraulic cuplas with a working pressure of 20.6mpa{210kgf/cm2}. Structure is designed to reduce pressureloss to the lowest, and is best for... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
ATP Safety-Touch™ Full Flow Air Coupling -- Industrial Interchange Coupler – 1/2 Inch
from Advanced Technology Products

Coupler, Safety-Slide, Full Flow, 1/2 ″ Body SizeThe Safety-Slide ™ features a compact, lightweight design that reduces user fatigue when compared to a traditional coupler design. The Safety Slide ™ eliminates the valve and spring often seen in traditional couplers, providing... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.500
Rectus Self-Venting Series 27KE -- 27KEAK21MPNS_99
from Parker Hannifin / Automation / Pneumatic - Europe

With nominal diameter 10, one of the largest range in a. new generation of couplings with ventilation technology. Two-stage uncoupling prevents occurence of the. whiplash effect. Connected in the same manner as all. standard couplings – single hand operation. The venting. takes place without... [See More]

  • Material: Brass/Bronze; Steel
  • Quick Coupler Valving: Non Valved
  • Application: Pneumatic (Air)
  • Design Units: English
High Flow Multi Purpose Coupling -- TNV-04F-04FP
from Tompkins Industries, Inc.

High Flow Multi Purpose Coupling. 1/4" - 1-1/4". Available in Steel, Brass, and Stainless. For Use in Hydraulic and Pneumatic Applications. US Military Spec MIL-C-51234 [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
2 Pc “A” Style Male Air Quick Couplers -- 0430257
from Princess Auto Limited

2 Pc “A ” Style Male Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250
Quick Disconnect Plug - Hardened Steel -- D10089
from General Pump

General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have expanded to serve Vehicle Wash as well as many Industrial Applications... [See More]

  • Material: Steel
  • Design Units: English; Metric
  • Application: Hydraulic
  • English Size: 0.375
QUICK DISCONNECT COUPLINGS ISO A -- QC ISO A
from Gemels

Gemels has a division that produces quick disconnect couplings ISO A, mostly used in agricutlure machines. [See More]

  • Material: Steel; Stainless
  • Design Units: Metric
  • Application: Hydraulic
  • Metric Size: 6.00 to 50.00
European Screw Couplers -- Series VR
from Stucchi Inc.

Overview: Due to their rugged design, VR series couplings are particularly well suited for heavy-duty service conditions. The VR coupler is a durable product using a low leakage style valve for the sealing mechanism and threads as the mechanical connection. Technical Characteristics: Coupling body:... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- 280 Cupla
from Nitto Kohki U.S.A., Inc.

Generic Cupla copes with high pressure lines in hydraulic equipment! Low pressure loss is ideal for hydraulic equipment. Complys with international standard ISO 7241-1A. General purpose hydraulic cuplas with the working pressure up to 27.5~31.5mpa {281~321kgf/cm2}. Structure keeps pressure loss... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
High Pressure Poppet Screw Together Coupling -- PVVM-04F-04MP
from Tompkins Industries, Inc.

High Pressure Poppet Screw Together Coupling. 1/4" - 3/8". 10,000 PSI. Interchanges: Enerpac, Hydraulic Jack [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
2 Pc “H” Style Male Air Quick Couplers -- 0430268
from Princess Auto Limited

2 Pc “H ” Style Male Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.375
Quick Disconnect Plug -- D10008
from General Pump

General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have expanded to serve Vehicle Wash as well as many Industrial Applications... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.375
Flat Face Style Couplings -- Series "A" HP
from Stucchi Inc.

Overview: The Stucchi HP Series offers a patented safety system to prevent accidental disconnection. This patented sleeve system automatically rotates the sleeve when connected, engaging the safety lock mechanism. To disconnect: the coupler sleeve must be turned and aligned between the release notch... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- 350 Cupla
from Nitto Kohki U.S.A., Inc.

Their “airless valve shut-off design ” greatly reduces air admixture!. Ideal for hydraulic lines with larger pressure fluctuations. Locking mechanism to prevent accidental disconnection maintains tight connection even under vibration or impact. Both socket and plug have built in... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
ISO 16028 Flat Face Coupling -- FFI-04F-04FP
from Tompkins Industries, Inc.

ISO 16028 Flat Face Coupling. 1/4" - 1". Non-spill design. Complies with HTMA Standards. ISO 16028 [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
2 Pc “H” Style Male Air Quick Couplers -- 0430269
from Princess Auto Limited

2 Pc “H ” Style Male Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250
Quick Disconnect Plug -- D11006
from General Pump

General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have expanded to serve Vehicle Wash as well as many Industrial Applications... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Flat Face Style Couplings -- Series "A" Premier
from Stucchi Inc.

Overview: "A" Series or Premier Series offers higher pressure ratings, superior flow ratings, lower pressure drop compared to FIRG Series or competitors products. Applications: Flat Face couplers are specifically designed for applications needing no-leak performance. The mating faces are easily... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- 450 Cupla
from Nitto Kohki U.S.A., Inc.

Metal-touch valve system with. Superior durability! Sleeve stopper. Mechanism gives secure connection. Cupla for higher working pressure up to 44.1 Mpa (450kgf/cm2). Mechanism to prevent accidental disconnection maintains tight connection even under vibration or impact when connected. Both socket... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
ISO A Interchange Poppet Style Coupling -- ANV-04F-04FP
from Tompkins Industries, Inc.

We have a full-line of threaded and weld flanges in Code 61 (standard) up to 4" and Code 62 (high pressure) in sizes up to 2". We also carry Code 61 and Code 62 split flange kits which include split flange halves, O-ring, lock washers and bolts for all the flanges we sell. No braze flange adapters... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
2 Pc “M” Style Male Air Quick Couplers -- 0430254
from Princess Auto Limited

2 Pc “M ” Style Male Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250
Quick Disconnect Plug -- D11007
from General Pump

General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have expanded to serve Vehicle Wash as well as many Industrial Applications... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
Flat Face Style Couplings -- Series "A" Premier Z
from Stucchi Inc.

Overview: "A" Series or Premier Z Series offers higher pressure ratings, superior flow ratings, lower pressure drop compared to competitors products. Specialized plating for high corrosion resistance designed to exceed 400 hours in the ISO Salt Spray test before the appearance of red spots. [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- 700 Cupla
from Nitto Kohki U.S.A., Inc.

High pressure cupla for working pressures up To 68.6mpa and pressure resistance of 98mpa!. Unique sleeve ring-lock system copes with Vibration and impact when connected. Cupla for extremely high working pressures up to 68.6mpa {700kgf/cm2} and pressure resistance of 98mpa {1,000kgf/cm2}. Metal touch... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
ISO A Interchange Poppet Style Coupling -- ANV-04M-04FP
from Tompkins Industries, Inc.

ISO A Interchange Poppet Style Coupling. 1/4" - 2". Interchangeable to ISO 7241-1 series "A" [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
2 Pc “M” Style Male Air Quick Couplers -- 8039231
from Princess Auto Limited

2 Pc “M ” Style Male Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.375
Flat Face Style Couplings -- Series A-HD
from Stucchi Inc.

Stucchi A-HD (formerly ASP) Series Female Couplings will connect by hand with residual pressure of 1500 psi locked in the hydraulic circuit. It will connect with residual pressure without releasing any fluid into the environment. The mating circuit will need to be without residual pressure. [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- F35 Cupla
from Nitto Kohki U.S.A., Inc.

Flat contact face design reduces spill upon disconnection by less than half compared with that of conventional design. Flat contact face design makes it easy to clean dust and foreign matters adhered on the surface of coupling so as to prevent them form entering inside and this causing faulty... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
ORFS TO FLANGE - 45°- CODE 61 -- HNV-02F-02FP
from Tompkins Industries, Inc.

ISO B Interchange Coupling. 1/8" - 1-1/4". Interchanges with Parker 60 and Aeroquip FD45. NPT Threads Standard. Available in Brass and Stainless Upon Request [See More]

  • Material: Brass/Bronze (optional feature); Steel; Stainless (optional feature)
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.125
2 Pc “T” Style Female Air Quick Couplers -- 0430260
from Princess Auto Limited

2 Pc “T ” Style Female Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250
Flat Face Style Couplings -- Series APM
from Stucchi Inc.

Overview: Stucchi APM Series Male Couplings will connect by hand with residual pressure of 250 bar or 3571 psi locked in the hydraulic circuit. It will connect with residual pressure without releasing any fluid into the environment. The mating circuit will need to be without residual pressure. [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- FF Cupla
from Nitto Kohki U.S.A., Inc.

1.5 ~ 2 times higher flow. High flow type with "Airless valve shut-off" design. Compared with nitto s conventional 35mpa cuplas. The flow volume is increased 1.5 to 2 times. Increase ratio of each flow volume depends on the cupla size air less valve shut off design minimizes spillage volume on... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
Straight Through Coupling -- ST-04M-04FP-S
from Tompkins Industries, Inc.

Straight Through Coupling. 1/4" - 3/4". Also available in Stainless Steel [See More]

  • Material: Brass/Bronze; Steel; Stainless (optional feature)
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.250
2 Pc “T” Style Male Air Quick Couplers -- 0430259
from Princess Auto Limited

2 Pc “T ” Style Male Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250
Flat Face Style Couplings -- Series FIRG
from Stucchi Inc.

Overview: The "Original One", that is the FIRG flat-face Series from Stucchi. Developed in 1982, Stucchi has supplied the original ISO 16028 interchangeable coupling, and still continues to supply this Series due to the good performance, long life and competitive prices on this Series. Technical... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
High Pressure Quick-Couplers -- HSP Cupla
from Nitto Kohki U.S.A., Inc.

Special steel body is tough against vibration and impact!. Male and female thread end configurations are available. Low pressure loss characteristic suits hydraulic equipment applications. Quenched special steel body. Powerful impact resistance, especially against impulses. Valve is designed to... [See More]

  • Material: Steel
  • Application: Hydraulic
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
Wing Style Coupling -- FB-12F-12FP
from Tompkins Industries, Inc.

Wing Style Coupling. 3/4" - 1-1/2". Connect / Disconnect Under Pressure. Interchanges: Parker 6100 and Aeroquip 5100 [See More]

  • Material: Steel
  • Design Units: English
  • Application: Hydraulic
  • English Size: 0.750
2 Pc "M" Style Female Air Quick Couplers -- 8039222
from Princess Auto Limited

2 Pc "M " Style Female Air Quick Couplers [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.375
Flat Face Style Couplings -- Series PP
from Stucchi Inc.

Overview: The "Push-Pull" coupler is built on the A Premier platform, thus allowing "breakaway" capabilities when the coupler is unintentionally left coupled. it is mounted in a clamp fisture that is designed to be fixed mounted to the structure and when pulled apart in the line with the coupler,... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Anti Vibration
from Nitto Kohki U.S.A., Inc.

Direct mounting onto vibrating and percussive air tools enabling to absorb strong shocks generated by the tools in order to minimize wear on the sockets. Optimizes the life of the socket by reducing the impact of vibrating and percussive tools by between 1/5 and 1/9 enabling direct mount of the plug... [See More]

  • Material: Brass/Bronze; Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250 to 0.375
Flat Face Style Couplings -- Series VEP
from Stucchi Inc.

Overview: Stucchi VEP Series is the ultimate solution most popular to hydraulic circuit applications subject to high pressure impulses, and circuits which experience high residual or trapped pressure in a line. The VEP thread to connect design eliminates premature wear or brinelling associated with... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Hi Cupla
from Nitto Kohki U.S.A., Inc.

From factory air line to pneumatic tool connection, available in various body materials, sizes and end configurations. Excellent durability. An excellent general purpose coupling for connecting factory air supply to pneumatic tools. Steel coupling is suitable for air. Brass or stainless steel are... [See More]

  • Material: Brass/Bronze; Steel; Stainless
  • Application: Pneumatic (Air)
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
Flat Face Style Couplings -- Series VEP HD
from Stucchi Inc.

Overview: Stucchi VEP HD Series is the ultimate solution most popular to hydraulic circuit applications subject to high pressure impulses, and circuits which experience high residual or trapped pressure in a line. The VEP HD thread to connect design eliminates premature wear or brinelling associated... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Line Cupla
from Nitto Kohki U.S.A., Inc.

Enables several air lines to be taken simultaneously from one supply line!. Just push in the plug to socket for simple and secure connection. Multiple outlets are available from single air supply source. Choose from the 2-outlet type(model 200s) the 5-outlet straight type (model 200l)and the outlet... [See More]

  • Material: Aluminum; Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • Temperature: 68 to 140
Flat Face Style Couplings -- Series VP
from Stucchi Inc.

Overview: Stucchi VP Series is the ultimate solution most popular to hydraulic circuit applications subject to high pressure impulses, and circuits which experience high residual or trapped pressure in a line. The VP thread to connect design eliminates premature wear or brinelling associated with... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Nut Cupla
from Nitto Kohki U.S.A., Inc.

No hose clamp required! Simple and secure connection to urethane hose. Fitted with hose guard nut to prevent possible kinking. nut types are available in hi-cupla series and hi-cupla 200 series hose guard nut type available to prevent hose kinking. to mount on hose simply slide it over the nipple... [See More]

  • Material: Steel
  • Application: Pneumatic (Air)
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: Metric
Heavy Duty Screw Couplers -- Series VLS
from Stucchi Inc.

Overview: VLS series couplings are particularly well suited for heavy-duty service conditions. The VLS coupler is a durable product using heavy duty poppet style valves for the sealing mechanism and threads as the mechanical connection. Technical Characteristics: Coupling body: zinc plated steel. [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Rotary Plug
from Nitto Kohki U.S.A., Inc.

Newly developed rotary function allows 360 ˚ swivelling!. Big improvement for handling of pneumatic tools!. Rotary neck plug for hose connection to pneumatic tools and pneumatic devices. Fits at angle to the tool eliminating annoying offset load caused by connected hose. Ideal compact design... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250 to 0.375
Interchange Couplings -- Series IVHP
from Stucchi Inc.

Overview: 10,000 PSI working pressure. Seals: Nitrile. Material: hardened Steel for higher burst pressure than competitors. Threaded sleeve allows connection / disconnection under pressure. Interchange with Parker 3000 [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Super Cupla
from Nitto Kohki U.S.A., Inc.

The lightweight design makes the Cupla best suited to power tools!. Push-to-connect for easy operation. Light weight design suits direct connection to power tools aluminum body is adopted for some models to reduce the weight. Just push the plug into socket for easy one hand connection. Available in... [See More]

  • Material: Aluminum; Brass/Bronze; Steel
  • Application: Pneumatic (Air)
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
Poppet Style Couplings -- Series BIR
from Stucchi Inc.

Overview: Stucchi APM Series Male Couplings will connect by hand with residual pressure of 250 bar or 3571 psi locked in the hydraulic circuit. It will connect with residual pressure without releasing any fluid into the environment. The mating circuit will need to be without residual pressure. [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Low Pressure Quick-Couplers For Air -- Twist Plug
from Nitto Kohki U.S.A., Inc.

Eliminates hose twisting, kinking, or bending! Greatly improves working efficiency!. A plug with a free twisting neck for hose connections to pneumatic tools and devices. Free angle control (max 70" flexible) provides comfortable job positions even in narrow spaces or with overhead works. The... [See More]

  • Material: Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.125 to 0.375
Poppet Style Couplings -- Series I-IP
from Stucchi Inc.

Overview: Stucchi I-IP Series is an extension of the ISO A style couplings and is one of the most popular designs worldwide used in agricultural, mobile equipment, and some industrial applications. The IP Series is the ISO A interchange coupler with a push pull mounting feature. The I Series is the... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Middle Pressure Quick-Couplers -- SP-A Cupla
from Nitto Kohki U.S.A., Inc.

High flow type SP Cupla is now released! Plugs with male thread end are newly added. [See More]

  • Material: Brass/Bronze; Steel; Stainless
  • Application: Hydraulic; Pneumatic (Air)
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
Poppet Style Couplings -- Series IRB
from Stucchi Inc.

Overview: The Series IRB quick couplings are interchangeable to ISO 7241-1 Series B. The Series IRB most important characteristics are compactness, and highest quality raw material used to manufacture. Technical Characteristics & Options: NPT standard threads. Anti extrusion rings are in pure... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Middle Pressure Quick-Couplers -- TSP Cupla
from Nitto Kohki U.S.A., Inc.

Valveless structure suits high viscosity fluids! Various body materials, sizes and end configurations. Braided hose connection types are newly added. Valveless construction drastically saves pressure loss and achieves high flow rate. Suitable for high viscosity fluids (such as grease). Available in... [See More]

  • Material: Brass/Bronze; Steel; Stainless
  • Application: Hydraulic; Pneumatic (Air)
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English
Poppet Style Couplings -- Series IRS
from Stucchi Inc.

Overview: Stucchi Agriculture Series are offered with a choice of either ball or poppet valve mechanisms for automatic shut-off during disconnection. The ball mechanism is the IR series, the poppet mechanism is the IRV series. The IR series are mainly for applications where interchangeability with... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Multiple Type Manual Quick-Coupler -- MAM Type
from Nitto Kohki U.S.A., Inc.

Simultaneously connects several ports securely in one operation! Greatly cuts cycle time in multiple ports replacement. Handles several ports at once. Simple manual lever action completes easy connection / disconnection. Comes with lock mechanism to prevent accidental disconnection. Valve on socket... [See More]

  • Material: Aluminum; Brass/Bronze; Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.125
Screw Poppet Interchange -- Series VD
from Stucchi Inc.

Overview: Due to their rugged design, VD series couplings are particularly well suited for heaby-duty service conditions making them one of the most popular designs in Europe. The VD coupler is a durable product using a poppet style valve for the sealing mechanism and threads as the mechanical... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Multiple Type Manual Quick-Coupler -- MAM-A Type
from Nitto Kohki U.S.A., Inc.

Simultaneously connects several ports securely in one operation! Greatly reduces changeover time in multiple ports replacement. Handles several ports at once. Simple manual lever action completes easy connection/ disconnection. Two stage lever operation prevents cupla from accidental dropping due to... [See More]

  • Material: Aluminum; Brass/Bronze; Steel
  • Design Units: English
  • Application: Pneumatic (Air)
  • English Size: 0.250 to 0.500
Specialty Couplings -- CQB Series
from Stucchi Inc.

Overview: Specialty Couplers were designed as a solution to customer applications, replacement couplers for custom applications such as automation plates for cooling systems and hydraulics Locomotive coolant systems, steel mill automation equipment. Type of fluids: Cooling water (water and glycol,... [See More]

  • Material: Steel
  • Quick Coupler Valving: Non Valved
  • Application: Hydraulic
  • Design Units: English
Multiple Type Quick-Coupler For Automation -- MALC-HSP Type
from Nitto Kohki U.S.A., Inc.

A single operation makes simultaneous connections for multiple lines that have a variety of different fluids and sizes. A special design minimizes air admixture in fluid lines upon connection. Compared with conventional multi cuplas approximately double flow rates are realized. This could reduce the... [See More]

  • Material: Steel
  • Design Units: Metric
  • Application: Hydraulic
  • Metric Size: 28.00 to 50.00
Multiple Type Quick-Coupler For Automation -- MALS/MALT Type
from Nitto Kohki U.S.A., Inc.

Special valve structure allows minimal air admixture in fluid lines during Cupla connection. Liquid bleeding on Cuplas disconnection is very little, which makes it best for frequent connection/disconnection applications. Snap Ring and thread screw mount types to mount on the base plate are standard. [See More]

  • Material: Steel
  • Application: Hydraulic; Pneumatic (Air)
  • Coupling Type: Ball and Sleeve Fitting
  • Design Units: English