Backflow Prevention Valves | McMaster-Carr

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System of Measurement

Pipe Size

Fitting Connection

Push to Connect

Quick Disconnect

For Use With

Chlorinated Water

Deionized Water

Diesel Exhaust Fluid

Body Material

Stainless Steel

Thread Type

UN/UNF (SAE Straight)

Minimum Opening Pressure

Connects To

Mounting Position

Tube OD

Maximum Pressure @ Temperature

50 psi @ 65° F

15 psi @ 70° F

25 psi @ 70° F

50 psi @ 70° F

115 psi @ 70° F

125 psi @ 70° F

145 psi @ 70° F

150 psi @ 70° F

200 psi @ 70° F

220 psi @ 70° F

275 psi @ 70° F

300 psi @ 70° F

400 psi @ 70° F

500 psi @ 70° F

600 psi @ 70° F

720 psi @ 70° F

1,000 psi @ 70° F

1,440 psi @ 70° F

Actuation

Gender

Valve Type

Reduced Pressure Zone

Shape

End-to-End Length

Seal Material

Stainless Steel

Check Valve Type

Spring-Loaded Ball

Spring-Loaded Piston

Maximum Temperature

100° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

Material

Stainless Steel

Fitting Type

Valve Function

Backflow Prevention

Back-Pressure Regulation

Directional Control

Flow Adjustment

Flow Regulation

Pressure Control

Pressure Regulation

Pressure Relief

Temperature Regulation

Vacuum Regulation

RoHS

Compliant with Exemptions

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

How can we improve?

1,011 Products

Fluid Handling

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

Vacuum Breakers

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

Backflow-Prevention Valves

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

Sump Pump Backflow-Prevention Valves

Sump Pump Backflow-Prevention Valves

Block dirty water from returning to your sump pump

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Hose Nozzles

Control flow while dispensing water, fuel, hydraulic fluid, coolant, and chemicals

Flame Arresters

Flame Arresters

Absorb heat from a fire in your gas pipeline to stop it from traveling back to the gas source

Power Transmission

Hydraulic Check Valves

Hydraulic Check Valves

Open to allow hydraulic fluid flow in one direction and close when flow stops or reverses

Air Flow Check Valves

Air Flow Check Valves

Open to allow air flow in one direction and close when flow stops or reverses

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)