Underwater Check Valves

Description: VALVE, CHECK, INHALATION AND EXHALATION FOR UNDERWATER BREATHING APPARATUS (SCUBA)

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

Description: Suitable for air quality to ISO 8573.1 Class 4: dirt, water and oil High flow - up to 8.6 Cv Working pressure up to 188 psi / 13 bar working Allows free flow in one direction and provides positive checked flow in the reverse direction Wide selection of inlet and outlet connections available

• Pressure Rating: 188 psi
• Flow (Cv): 8.6
• Media: Air, Water
• Features: Check Valves

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

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

Description: The R-338 is a 2-position, 3-way, double-piloted, fully-ported valve also with an independent check valve. It can be used Normally-Open, Normally-Closed, as a 2-position diverter or as a 2-way selector. Features • Easy manifold-mounted design • Integrated circuitry • Octo port

• Pressure Rating: 150 psi
• Media Temperature: 32 to 180 F
• Number of Ports/Ways: 3
• Media: Air, Water

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

Description: High Flow Rate Spring Loaded Lead Free Brass Check Valve w/ EURO-PRESS Connections

• Valve Size: 1.25 inch
• Pressure Rating: 175 to 400 psi
• Media Temperature: 10 to 210 F
• Material Of Construction: Brass / Bronze

Description: Double Door Wafer-style Check Valve w/ Viton Seat

• Valve Size: 12 inch
• Pressure Rating: 200 psi
• Media Temperature: 30 to 250 F
• Features: Check Valves

Description: High Capacity Spring Loaded Stainless Steel Check Valve 250 WOG, FNPT Threaded w/ FKM Seat

• Valve Size: 0.75 inch
• Pressure Rating: 250 psi
• Media Temperature: -4 to 302 F
• Features: Check Valves, Shut Off Valves

Description: NSF certifed Double Door Wafer-style Check Valve w/ EPDM seat

• Valve Size: 2.5 inch
• Pressure Rating: 200 psi
• Media Temperature: 30 to 250 F
• Features: Check Valves

Description: differential pressure forces the membrane against the disc to prevent backflow. Waterflex Valves eliminate bang and slamming problems common to conventional swing check valves. Contact Red Valve to see how we can find a solution to fit your needs. Features No springs,

• Features: Check Valves
• Media: Water

Description: ValvTechnologies is an exclusive distributor of in-line check valves for nuclear applications and licensed manufacturer of ASME III and safety-related check valves. Designed to prevent "water hammer", the spring-assisted, in-line design featured in all DFT® check

• Valve Size: 0.25 to 24 inch
• Agency: ANSI, ASME
• Valve Type: Ball / Disk Check Valves
• Features: Check Valves, Other

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

Description: Features 'PC8 series ' is lightweight because resin. In addition to tap water, various liquids can be used. Piping installation posture is free. Low cracking specification. Applications Machine Tools：Milling machine, NC lathe, laser processing machine etc. Industrial furnace：General industrial

• Valve Size: 0.25 to 0.5 inch
• Pressure Rating: 116.029471485758 psi
• Flow (Cv): 28 to 32
• Number of Ports/Ways: 2

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

Description: check valve accommodates 1/8 inch ID tubing on the inlet and a male luer lock outlet. It provides controlled directional flow, and eliminates the need for bonding. Qosina offers a variety of flow rates, materials, cracking pressure and back pressure options. Check Valve

• Pressure Rating: 0.087 psi
• Media: Air, Water
• Features: Check Valves, Other

Description: The Spirax Sarco vacuum breaker range will protect your plant and process equipment against vacuum, and at the same time allow condensate to drain effectively from pipework and storage vessels.

• Valve Size: 0.125 to 0.5 inch
• Pressure Rating: 348.09048 psi
• Media Temperature: 500 F
• Number of Ports/Ways: 2

Description: fundamental difference between the two is the needle valve controls flow in both directions (bi-directional) and the flow control valve controls flow in only one direction (allowing free flow in the opposite direction). In both the flow control and needle valve a finely threaded

• Valve Size: 0.19 inch
• Pressure Rating: 125 psi
• Media Temperature: -20 to 160 F
• Flow (Cv): 0.09

Description: Up to 6000 psig (413bar) Up to 204℃ (400℉) ss316 O-ring seal blow-out proof design DK-LOK OD 1/8 - OD1 inch Pipe thread 1/8 - 1"

• Pressure Rating: 5,000 psi
• Media Temperature: -18 to 399 F
• Flow (Cv): 4.7
• Number of Ports/Ways: 2

Description: SPRING OPERATED TYPE 6 INCH NOMINAL SIZE 6 NOMINAL SIZE - DECIMAL 6 NOMINAL SIZE - FRACTIONAL ANSI/NSF 61, FM, UL, ULC APPLICABLE STANDARD ACID, AIR, FIRE PROTECTION, WATER APPLICATION -30 TO 230 DEG F TEMPERATURE RATING END SEAL EPDM GASKET, HORIZONTAL/VERTICAL INSTALLATION INCLUSIONS/FEATURES

• Pressure Rating: 250 psi
• Media Temperature: -30 to 230 F
• Agency: ANSI, NSF
• Media: Air, Water

Description: No Description Provided

• Pressure Rating: 5 psi
• Number of Ports/Ways: 2
• Features: Check Valves, Ground Water, Manual / Hand, Other, Sanitary / Hygienic Valves
• Valve Type: Double Check Valves

Description: The ZW5004ILCAP 2-1/2" Pressure-Tru® ZW5004 Pressure Reducing Floor Control Valve features an inline globe body, FNPT connections, capped bonnet, and no handwheel assembly. Its listed as a floor control valve, an indicating valve, and a check valve in automatic

• Valve Size: 2.5 inch
• Features: Check Valves, Control Valves
• Media: Water

Description: capability to manufacture and supply 4 different product categories, including: ■ General Instrumentation Valves and Fittings ; ■ Medium & High Pressure Valves and Fittings; ■ Semiconductor & Specialty Gas Valves and Fittings; and ■ Sampling Systems. Our mission is to provide

• Pressure Rating: 3,000 to 6,000 psi
• Media Temperature: -10 to 900 F
• Flow (Cv): 0.1 to 4.48
• Number of Ports/Ways: 2

Description: Industrial Pneumatic Valve, with and without check valve Features Allows remote control of the water pressure. Allows off-load start up. When there is no air pressure water flows through the by-pass without pressure. No discharge leakage in bypass. Suitable for controlling

• Valve Size: 0.25 to 1.25 inch
• Pressure Rating: 6,530 psi
• Media Temperature: 140 F
• Number of Ports/Ways: 3

Description: Design Dual-plated wafer type check valve, single-piece body. Metal or elastomer sealing. Cast iron, ductile iron, cast steel or stainless steel body; maintenance free. PN 10 / 16 / 25 / 40, Class 150, Class 300. EN, ANSI and JIS flange connections available. Overview of technical data

• Valve Size: 1.968505 to 23.62206 inch
• Pressure Rating: 725.1885 psi
• Media Temperature: -320.8 to 1,000.4 F
• Number of Ports/Ways: 2

Description: SW Series swing check valves are offered in PVC, Corzan CPVC and PP. Seals and seats are FPM or EPDM. A counterweight is an option for added stability. Swing check valves are furnished with two o-ring flange seals so no additional gaskets are required for installation.

• Valve Size: 3 to 8 inch
• Pressure Rating: 150 to 225 psi
• Media Temperature: 70 F
• Number of Ports/Ways: 2

Description: The SV111 is a spring-activated check valve with disc type seating. It has a relatively low, yet realistic rated cracking pressure, resulting in quick response to changes in fluid pressure. The optically flat PTFE seal disc and seat provides drip tight sealing on most fluids. It’s

• Valve Size: 0.25 inch
• Pressure Rating: 100 psi
• Media Temperature: 250 F
• Flow (Cv): 0.1

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 36 inch
• Pressure Rating: 150 to 190 psi
• Media Temperature: 100 to 150 F
• Number of Ports/Ways: 2

Description: Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Made of MABS and Silicone, Qosina part # 80503 features a low, 0.087 psi cracking pressure ideal for infusion, drainage and irrigation applications. This

• Pressure Rating: 0.087 psi
• Media: Air, Water
• Features: Check Valves, Other

Description: For over 35 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type

• Valve Size: 1 inch
• Pressure Rating: 55 psi
• Flow (Cv): 4.6
• Number of Ports/Ways: 2

Description: Industrial pneumatic valve, features check valve Features 3-way flow-through design, pneumatically-operated pressure regulator with automatic unloading Regulates the operating pressure of the system by releasing excess volume through the bypass Limits pressure in the system to

• Valve Size: 0.25 to 1.25 inch
• Pressure Rating: 2,900 psi
• Number of Ports/Ways: 3
• Port Size: 0.25 to 1.25 inch

Description: Metric fittings are manufactured in several high performance materials that are FDA and NSF-61 certified for drinking water.

• Valve Size: 0.5905515 inch
• Pressure Rating: 100 to 250 psi
• Media Temperature: 75 to 140 F
• Features: Check Valves

Description: The ZW5004ILG 2-1/2" Pressure-Tru® ZW5004 Pressure Reducing Floor Control Valve features an inline globe body and grooved connections. It is listed as a floor control valve, an indicating valve, and a check valve in automatic sprinkler systems. Its also listed as a

• Valve Size: 2.5 inch
• Features: Check Valves, Control Valves
• Media: Water

Description: YC Series y-check valves are offered in PVC and Corzan CPVC. O-rings are FPM standard but EPDM is available. All sizes are either socket, threaded or flanged body style. True union socket or threaded end connections are available. For spring-loaded y-check valves, see the

• Valve Size: 0.5 to 4 inch
• Pressure Rating: 150 psi
• Media Temperature: 70 F
• Number of Ports/Ways: 3