ASME Check Valves | McMaster-Carr

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Specifications Met

Food Industry Standard

NSF/ANSI 61

NSF/ANSI 372

System of Measurement

Pipe Size

Body Material

Fitting Connection

For Use With

Methyl Ethyl Ketone (MEK)

Thread Type

Mounting Position

Pressure Class

Material

Connects To

Check Valve Type

Minimum Opening Pressure

Gender

Valve Type

Reduced Pressure Zone

Vacuum Breaker

Actuation

Pressure

Vacuum

Maximum Pressure @ Temperature

End-to-End Length

Shape

Disc Material

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

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219 Products

Check Valves

High-Flow Threaded Check Valves

Internal components reduce flow resistance for the maximum possible flow

High-Cycling Threaded Check Valves

Few moving parts to wear out from frequent opening, pulsating flow, and rapid reversal

12 products

Butt-Weld Check Valves

Weld to unthreaded pipe for a smooth, flush connection that provides maximum flow

5 products

Check Valves with Solder-Socket Fittings

Solder to copper tubing for a permanent, leak-tight connection

7 products

Check Valves for Harsh Chemicals

Easy-Install Threaded Check Valves for Harsh Chemicals

Reduce installation time and allow for maintenance without detaching pipe connections

12 products

Threaded Check Valves for Harsh Chemicals

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

6 products

Flanged Check Valves for Harsh Chemicals

Bolt to ANSI flanges

2 products

Check Valves for Drinking Water

Threaded Check Valves for Drinking Water

Meet NSF/ANSI 61 requirements for drinking water service

17 products

Socket-Connect Check Valves for Drinking Water

Bond to unthreaded pipe with primer and cement for a permanent, leak-tight connection

18 products

Heavy Duty Threaded Check Valves for Drinking Water

The metal body makes these more durable than plastic valves for drinking water

11 products

Check Valves with Push-to-Connect Fittings for Drinking Water

Insert tubing into the fitting without needing heat, solder, or flux

8 products

Heavy Duty Check Valves with Push-to-Connect Fittings for Drinking Water

The metal body makes them more durable than plastic valves with push-to-connect fittings

5 products

Check Valves with Solder-Socket Fittings for Drinking Water

Solder to copper tubing for a permanent, leak-tight connection

4 products

Check Valves for Oil and Fuel

High-Performance Threaded Check Valves for Fuel

Withstand pressures up to 1,975 psi and temperatures up to 800° F

12 products

Socket-Connect Check Valves for Oil and Fuel

Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection

6 products

Other Products

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

21 products

Vacuum Breakers

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

9 products