1 1/4 Check Valves | McMaster-Carr

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Pipe Size

Body Material

Stainless Steel

For Use With

Deionized Water

Ethylene Glycol

Hydrochloric Acid

Isopropyl Alcohol

Mineral Spirits

Minimum Opening Pressure

Fitting Connection

Thread Type

Mounting Position

Check Valve Type

Spring-Loaded Ball

Spring-Loaded Piston

Actuation

Connects To

Fitting Type

Gender

Maximum Pressure @ Temperature

25 psi @ 70° F

125 psi @ 70° F

150 psi @ 70° F

200 psi @ 70° F

300 psi @ 70° F

400 psi @ 70° F

600 psi @ 70° F

1,000 psi @ 70° F

720 psi @ 100° F

1,975 psi @ 100° F

200 psi @ 150° F

300 psi @ 150° F

400 psi @ 150° F

600 psi @ 150° F

400 psi @ 170° F

Valve Type

Reduced Pressure Zone

Pressure Class

End-to-End Length

Seal Material

Stainless Steel

Disc Material

316 Stainless Steel

Shape

Flow Coefficient (Cv)

Maximum Temperature

Less than 250° F

300° F to 399° F

400° F to 499° F

500° F or greater

Color

REACH

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

How can we improve?

39 Products

Fluid Handling

Check Valves

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

Sump Pump Backflow-Prevention Valves

Sump Pump Backflow-Prevention Valves

Block dirty water from returning to your sump pump

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

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