3/4 Check Valves | McMaster-Carr

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Pipe Size

Body Material

Stainless Steel

For Use With

Chlorinated Water

Deionized Water

Ethylene Glycol

Thread Type

Fitting Connection

Gender

Minimum Opening Pressure

Maximum Pressure @ Temperature

125 psi @ 70° F

150 psi @ 70° F

200 psi @ 70° F

300 psi @ 70° F

400 psi @ 70° F

500 psi @ 70° F

600 psi @ 70° F

1,000 psi @ 70° F

1,500 psi @ 70° F

2,000 psi @ 70° F

3,000 psi @ 70° F

100 psi @ 75° F

720 psi @ 100° F

1,500 psi @ 100° F

1,975 psi @ 100° F

Connects To

Mounting Position

Seal Material

Stainless Steel

Valve Type

Reduced Pressure Zone

Check Valve Type

Spring-Loaded Ball

Spring-Loaded Piston

Actuation

Shape

Spring Material

Stainless Steel

Disc Material

316 Stainless Steel

Piston Material

Stainless Steel

Flow Coefficient (Cv)

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 399° F

400° F to 499° F

500° F or greater

Pressure Class

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

96 Products

Fluid Handling

Check Valves

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

Backflow-Prevention Valves

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

Vacuum Breakers

Vacuum Breakers

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

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.)