Stop Check Valves | McMaster-Carr

Filter by

Pipe Size

Thread Type

UN/UNF (SAE Straight)

For Use With

Flammable Vapors

Hydraulic Fluid

Body Material

303 Stainless Steel

Minimum Opening Pressure

Maximum Pressure

Fitting Connection

Gender

Dash Size

Check Valve Type

Maximum Flow Rate

Less than 5 gpm

10 gpm to 99 gpm

100 gpm to 249 gpm

250 gpm or greater

Maximum Temperature

Connects To

Maximum Pressure @ Temperature

25 psi @ 70° F

125 psi @ 70° F

Ball Material

Stainless Steel

Mounting Position

Inlet Pipe Size

Export Control Classification Number (ECCN)

REACH

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Connection Port

Port-to-Port Length

Hex Width

Flow Coefficient (Cv)

Thread Size

How can we improve?

96 Products

Fluid Handling

Sump Pump Backflow-Prevention Valves

Sump Pump Backflow-Prevention Valves

Block dirty water from returning to your sump pump

Vacuum Breakers

Vacuum Breakers

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

Check Valves

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

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.)