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Supplier: DFT Inc.
Description: The DFT® Excalibur® Silent Check Valve is a spring-assisted, center guided, in-line, check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, gasket, seat, spring,
- Valve Size: 2 to 24 inch
- Pressure Rating: 3,705 psi
- Media Temperature: -325 to 1,000 F
- Flow (Cv): 51 to 11,300
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Supplier: DFT Inc.
Description: The DFT® Model PDC® Silent Check Valve is specially designed for use on the discharge side of reciprocating air or gas compressors. It includes a pulse damping chamber to maintain the disc in the open position during the momentary reductions in flow associated with each cycle of a
- Valve Size: 2 to 12 inch
- Pressure Rating: 3,705 psi
- Media Temperature: -325 to 500 F
- Flow (Cv): 55 to 2,300
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Supplier: DFT Inc.
Description: The ALC® is an in-line, spring assisted, single guided "wafer" check valve designed to prevent "water hammer" and "reverse" flow. The lightweight compact design fits between mating flanges and meets API 594 Face-to-Face dimensions. The ALC® is an easy to maintain check
- Valve Size: 10 to 24 inch
- Pressure Rating: 720 psi
- Media Temperature: -325 to 1,000 F
- Flow (Cv): 1,690 to 7,970
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Supplier: DFT Inc.
Description: The DFT® Model SCV® is a corrosion resistant, dependable, versatile and economical spring-assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the SCV® provides tight shut-off and protects other equipment in the system from water
- Valve Size: 0.5 to 3 inch
- Pressure Rating: 3,600 psi
- Media Temperature: -325 to 1,000 F
- Flow (Cv): 6 to 180
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Supplier: Check-All Valve Mfg. Co.
Description: Flange Insert valves are the ultimate check valves in flanged systems. They provide the simplest most economical way to install check valves in a piping system, the valve body automatically positions the valve and holds it in place while bolts are
- Valve Size: 4 inch
- Flow (Cv): 144
- Number of Ports/Ways: 2
- Agency: ANSI, ASME, ISO, MSS
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Supplier: Mueller Steam Specialty
Description: Designed for liquids and gases where flow reversal can cause surge and water hammer. Elastomer seats provide bubble-tight shutoff.
- Valve Size: 2 to 54 inch
- Pressure Rating: 140 to 285 psi
- Media Temperature: -20 to 150 F
- Number of Ports/Ways: 2
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Supplier: Check-All Valve Mfg. Co.
Description: The Universal High Pressure check valve is a one piece body machined from bar stock with female pipe threads. The valve is designed and manufactured for high pressure applications. For applications below 3000 PSIG, view our UN-3 series. Available Materials: 316 Stainless Steel
- Valve Size: 0.75 inch
- Pressure Rating: 10,000 psi
- Flow (Cv): 7.2
- Number of Ports/Ways: 2
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Supplier: Check-All Valve Mfg. Co.
Description: The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (finer available) for use in new or existing sanitary systems. The 3SC design seals on the ID of sanitary ferrules with 3-A specified materials (standard is
- Valve Size: 2 inch
- Pressure Rating: 725 psi
- Flow (Cv): 27.2
- Number of Ports/Ways: 2
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Supplier: Check-All Valve Mfg. Co.
Description: The Check-All Flanged & Drilled - PTFE Lined check valve is a one-piece body valve with ANSI/ASME flanged ends. The valve has a solid one-piece PTFE liner, which covers the flange faces out to the raised face diameter. All wetted surfaces are fluoropolymer
- Valve Size: 2 inch
- Pressure Rating: 20 psi
- Flow (Cv): 83
- Number of Ports/Ways: 2
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Supplier: Mueller Steam Specialty
Description: Can be used in a variety of applications including: chilled and hot water systems, refrigeration, plumbing, air conditioning, gas and liquid applications, water filtration, oxygen systems, boiler feed lines, and centrifugal pump and compressor systems.
- Valve Size: 2 to 24 inch
- Pressure Rating: 822 to 990 psi
- Media Temperature: 100 to 450 F
- Number of Ports/Ways: 2
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Supplier: Mueller Steam Specialty
Description: Designed for liquids and gases where flow reversal can cause surge and water hammer. Used extensively in pump suction and discharge applications.
- Valve Size: 2 to 30 inch
- Pressure Rating: 150 to 200 psi
- Media Temperature: 150 F
- Number of Ports/Ways: 2
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Supplier: Flomatic Valves
Description: DUAL CHECK with ATMOSPHERIC VENT - Continuous pressure backflow preventer with an intermediate atmospheric vent, with double union ends. Complies with ASSE 1012, not for potable water. For reference use only. Please check Flomatic's website for the latest valve product
- Valve Size: 0.75 inch
- Pressure Rating: 175 psi
- Media Temperature: 210 F
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
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Supplier: Mueller Steam Specialty
Description: Can be used in a variety of applications including: chilled and hot water systems, refrigeration, plumbing, air conditioning, gas and liquid applications, water filtration, oxygen systems, boiler feed lines, centrifugal pump and compressor systems and process applications.
- Valve Size: 2 to 36 inch
- Pressure Rating: 195 to 275 psi
- Media Temperature: 100 F
- Number of Ports/Ways: 2
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Supplier: Radwell International
Description: DUAL CHECK VALVE ASSEMBLY, BACKFLOW PREVENTER, 1/2" MODEL 760. FREE 2 YEAR RADWELL WARRANTY
- Media: Air
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves
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Supplier: Flomatic Valves
Description: UNLEADED DUAL CHECK VALVE - Brass body with single union. Complies with ASSE 1024 For reference use only. Please check Flomatic's website for the latest valve product specifications.
- Valve Size: 0.5 to 1 inch
- Pressure Rating: 150 psi
- Media Temperature: 180 F
- Agency: ANSI, NSF
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Supplier: Red Valve Company, Inc.
Description: A Revolutionary Design for Backflow Prevention. Tideflex Duckbill Check Valves have low headloss and achieve the tightest possible seal for backflow operations, particularly at low flow rates. The flexibility of the Tideflex Check Valve allows the
- Valve Size: 4 to 102 inch
- Valve Type: Back Flow Preventer Assembly, Duckbill Valves
- Connection Description: Bolt Flange
- Features: Check Valves, Ground Water
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Supplier: Radwell International
Description: DISCONTINUED BY MANUFACTURER, RK 909M1-RT1-1/4-2, COMPLETE PARTS KIT FOR 1-1/4" THRU 2" 909 WATTS BACKFLOW PREVENTER, INCLUDES: THE RELIEF VALVE & THE CHECK VALVES: DISC ASSEMBLY, SEAT O-RINGS, RELIEF VALVE DIAPHRAGM & O-RINGS, PISTON O-RINGS & LUBRICANT. FREE 2
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves, Diaphragm Valves, Piston Valves, Pressure Relief Valves, Vacuum Relief / Anti-siphon Valves
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Supplier: FEBCO
Description: MasterSeries® backflow prevention assemblies aren't just Lead Free. We also redesigned the check and relief valves for superior performance.
- Valve Size: 2.5 to 10 inch
- Pressure Rating: 10 to 175 psi
- Media Temperature: 33 to 140 F
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
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Supplier: Zurn Industries LLC
Description: The Zurn Wilkins 975XL2 Reduced Pressure Principle Backflow Preventer provides high hazard protection for potable water applications. The wye pattern, bronze body provides separate access to each check valve and the relief valve for servicing. To view all options, see the
- Valve Size: 1.25 inch
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves
- Media: Water
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Supplier: Ames Fire & Waterworks
Description: Series 2000B Double Check Valve Assemblies prevent the backflow of contaminated water into the potable water supply. It consists of a bronze body construction that is easy to maintain and service. Series 2000B is ideal at referenced cross-connections identified as non-health
- Valve Size: 0.5 to 2 inch
- Pressure Rating: 175 psi
- Media Temperature: 33 to 140 F
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
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Supplier: Radwell International
Description: 3/4 INCH BRONZE DUAL CHECK VALVE BACKFLOW PREVENTER, INTERMEDIATE ATMOSPHERIC VENT, FEMALE UNION INLET/OUTLET CONNECTION, VIEGA PROPRESS ADAPTORS. FREE 2 YEAR RADWELL WARRANTY
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves
- Connection Description: Union
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Supplier: Xiamen Landee Industries Co., Ltd.
Description: Swing Check Valve, Flange Drilling According to ANSI125/150, DIN2501 PN10/PN16, and AS2129 Table E Model Number:LD 016-WCK1 Key Specifications/Special Features: Key Specifications/Special Features: Working pressure: PN10, PN16, 125lb Body materials: cast iron, ductile iron, aluminum
- Valve Size: 2 to 40 inch
- Media Temperature: -40 to 834.8 F
- Agency: ANSI, ASME, DIN
- Material Of Construction: Aluminum, Brass / Bronze, Cast Iron, Ductile Iron, Stainless Steel, Steel
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Supplier: Zurn Industries LLC
Description: The Zurn Wilkins 975XL2 Reduced Pressure Principle Backflow Preventer provides high hazard protection for potable water applications. The wye pattern, bronze body offers separate access to each check valve and the relief valve for servicing. To view all options, see the
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves
- Media: Water
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Supplier: General Pipe Cleaners
Description: Flood-Guard™ operates like a check valve to seal off water back-up caused by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the Flood-Guard™ float rises to seal off the drain opening until the water recedes. A screwdriver and a couple
- Valve Size: 2 to 4 inch
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves, Float Valves, Ground Water, Mechanical Device, Other
- Media: Cold Water, Wastewater, Water
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Supplier: Ames Fire & Waterworks
Description: The Series 3000BM1 Double Check Detector Assembly (DCDA) is specifically designed to protect against possible backpressure and backsiphonage conditions for non-health hazard (i.e., pollutant) application in accordance with Local Governing Water Utility Code. This device assembly is primarily
- Valve Size: 2 inch
- Pressure Rating: 175 psi
- Media Temperature: 33 to 140 F
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
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Supplier: AVK International A/S
Description: Swing Check Valves. Flanged Non Return Valve to EN12266. Cast Iron or Ductile Iron with or without Stainless Steel internals. Sizes range from DN150 to DN300.
- Valve Size: 6 to 20 inch
- Connection Description: Bolt Flange
- Material Of Construction: Cast Iron, Ductile Iron
- Features: Check Valves
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Supplier: NIBCO INC.
Description: Bronze Check Valves for use in commercial and industrial applications. Typical services include; hot and cold water, HVAC, steam, compressed air, gas and other general utility services. 125 psi/8.6 bar saturated steam to 353°F/178°C, 200 psi/13.8 bar non-shock cold working pressure,
- Valve Size: 0.25 to 4 inch
- Pressure Rating: 200 psi
- Media Temperature: 200 to 353 F
- Valve Type: Ball / Disk Check Valves, Swing Check Valves
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Supplier: Ames Fire & Waterworks
Description: Series LF2000B Double Check Valve Assemblies prevent the backflow of contaminated water into the potable water supply. It consists of a Lead Free* cast silicon copper alloy body construction that is easy to maintain and service. Series LF2000B is ideal at referenced
- Valve Size: 0.5 to 2 inch
- Pressure Rating: 175 psi
- Media Temperature: 33 to 140 F
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
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Supplier: Zurn Industries LLC
Description: The Zurn Wilkins 975XL2 Reduced Pressure Principle Backflow Preventer provides high hazard protection for potable water applications. The wye pattern, bronze body offers separate access to each check valve and the relief valve for servicing. To view all options, see the
- Valve Type: Back Flow Preventer Assembly
- Features: Check Valves
- Media: Water
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Supplier: Ames Fire & Waterworks
Description: The Maxim LFM300, LFM300N Double Check Detector Assemblies are used to prevent backflow of pollutants, that are objectionable but not toxic, from entering the potable water supply system. The Maxim LFM300, LFM300N may be installed under continuous pressure service and may be subjected
- Valve Size: 2.5 to 10 inch
- Pressure Rating: 175 psi
- Media Temperature: 33 to 110 F
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
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Supplier: Zurn Industries LLC
Description: Features And Benefits 6" double check valve assembly - grooved gate valve connections with OS&Y gate valves Short lay-length for small space installation Reliable performance and improved flow characteristics from patented compound check No threads or taps in body
- Valve Type: Back Flow Preventer Assembly, Double Check Valves
- Features: Check Valves
- Media: Water
Find Suppliers by Category Top
Featured Products Top
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Introducing the Tideflex® Duckbill Check Valve – the gold standard in backflow prevention. With an unrivaled reputation, Tideflex® Duckbill Check Valves boast a low cracking pressure, effectively eliminating standing water while maintaining minimal head loss (read more)
Browse Check Valves Datasheets for DeZURIK, Inc. -
Introducing the CheckMate UltraFlex® In-Line Check Valve, leading the industry in reliability and backflow prevention. Red Valve is excited to announce an updated video showcasing this premier product. The CheckMate UltraFlex® video highlights its heavy (read more)
Browse Check Valves Datasheets for DeZURIK, Inc. -
O'Keefe Controls Co. Tamperproof Checked Orifices are a unique style of flow control consisting of an integral check valve and a fixed precision orifice incorporated into a single fitting. This efficient construction allows metered flow in one (read more)
Browse Flow Orifices and Flow Restrictors Datasheets for O'Keefe Controls Co. -
, offering reliable protection against backflow while enabling smooth and efficient fluid flow. Read all about it in Our Semiconductor Check Valves Blog Post (read more)
Browse Check Valves Datasheets for DFT Inc. -
Parker’s CK1 check valves provide safe and effective backflow prevention for a variety of refrigeration applications. The gravity closing feature makes these valves ideal for systems that use a VFD or compressor unloading feature to reduce capacity as they can tolerate load (read more)
Browse Pressure Relief Valves Datasheets for Parker Sporlan Division -
existing device like a valve, manifold, vessel wall or some other fitting, and so effectively prevent backflow over a long, trouble-free operating life. To address the variety of industrial applications for these devices, O'Keefe Controls Co. manufactures Threaded Insert Check Valves in both (read more)
Browse Check Valves Datasheets for O'Keefe Controls Co. -
Check valves are simple components used in a fluid management system that permit the flow of fluid in one direction while preventing backflow in the other. But without proper application and installation, even the most high-quality components can’t perform properly. Download this (read more)
Browse Check Valves Datasheets for DFT Inc. -
– Uses a ball as the check mechanism to prevent backflow. Ball Valve – A valve with a spherical closure element that rotates to open or close the flow path. Butterfly Valve – A (read more)
Browse Water Valves Datasheets for McWane Plant and Industrial -
Quiet Protection for Critical Cooling. DFT ALC® Axial Flow Check Valves delivers low pressure drop, silent operation, and reliability for mission-critical cooling system applications. Cooling systems in continuous-duty applications require dependable uptime (read more)
Browse Check Valves Datasheets for DFT Inc.
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Alternative Fuels: Emissions, Economics, and Performance
… and vapor connections are protected by positive shut-off valves located as close to the tank as possible in combination with excess flow valves (or a backflow check valve for inlet connections) installed … … prevent the escape of LPG in event of a …
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Synthesis of Fructooligosaccharides from Aspergillus niger Commercial Inulinase Immobilized in Montmorillonite Pretreated in Pressurized Propane and LPG
… by Kuhn et al. [25], which consists basically of a solvent (propane or LPG ) reservoir, two thermostatic … All lines of the experimental setup consisted of 1/16 in. OD tubing of stainless steel (HIP), and between the pump and solvent reservoir, a check (one-way) valve (HIP 15-41AF1-T … … to avoid pressurization solvent backflow to the head of …
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States > Pennsylvania > State > Regulations > Title 67 - Transportation > Article VII - Vehicle Characteristics > Subpart A - Vehicle Code Provisions > Part I ...
A hydrostatic relief valve with a pressure setting not lower than 350 psi nor higher than 500 psi shall be installed between the backflow check valves and the fuel cutoff valve to the carburetor and between two positive liquid shut-off points … An LPG fuel supply container shall be permanently marked as follows: .
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California Code of Regulations (CCR) - Title 13 - Motor Vehicles - Division 2 - Department of the California Highway Patrol - Chapter 4 - Special Equipment (Ex...
A hydrostatic relief valve with a pressure setting not lower than 350lb/in nor higher than 500lb/in shall be installed between the backflow check valves and the gaseous fuel cutoff valve to the carburetor. Each LPG fuel supply container shall be permanently marked as follows: .
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States > California > State > Regulations > Title 13 - Motor Vehicles > Division 2 - Department of the California Highway Patrol > [13 CCR division 2, chapter ...
A hydrostatic relief valve with a pressure setting not lower than 350 psi nor higher than 500 psi shall be installed between the backflow check valves and the gaseous fuel cutoff valve to the carburetor. Each LPG fuel supply container shall be permanently marked as follows: .
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States > West Virginia > State > Regulations > Title 126 - Board of Education > [126 WVCSR 89] 089 - West Virginia Minimum Requirements for Design and Equipmen...
The fueling systems shall be equipped with a backflow check valve that will prevent the return flow of propane fuel. B. Engine compartment labels to include LPG warning and instructions to mechanics including the following: .
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Federal Register > Monday, July 22, 1996 > [61 FR 37849] Miscellaneous Changes to General Industry and Construction Standards; Proposed Paperwork Collection, C...
Paragraphs (b)(15)(v)-(vii) of §1910.110 contain requirements for the location of backflow check valves , excess-flow valves, and shutoff valves on tank cars and transport trucks. Paragraphs (c)(2)(ii)-(iv) of §1910.110 contain specifications for the marking of LPG cylinders.