Product description

As back check valves provide a one-way flow security functionality, they are ideal for installation in pipelines flowing into pressure tanks and pump discharge lines as they will close off if the flow-direction changes or stops. The disc design requires a minimal installation space and is thereby suitable for many installations, also as a later modification.

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Material

Body: Carbon steel, stainless steel
Guide: Carbon steel, stainless steel
Spring: Stainless steel
Poppet: Stainless steel

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Specifications

Gas types: LPG (Propane, Butane), NH3 (Ammonia, Anhydrous Ammonia)
Connections: Flange
Type: ANSI
Operating pressure: 50 bar (720 psi)
Internal pressure: Max. 137 bar (2000 psi)
Temperature range: -45˚C to +148˚C (-50˚F to +300˚F)
Sizes and range: 1" to 10"
Series: 167, 218 and 230 models
Standards: UL listed, CE-PED

*Materials and specifications are subject to generalisation. Our experienced people are ready to help you find the correct fit for your application. 

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Features

  • Wafer Type is designed to fit inside Schedule 160, 80 or less steel pipe
  • Wafer type: Fits inside the bolts of 150 or 300-pound American Standard steel pipe flanges
  • Flanged type is designed to fit between 150 or 300-pound American Standard steel pipe flanges 
  • Flanged type. Ring groove flanges can be furnished if required
  • Generous flow channels provide minimal pressure drops
  • Available in carbon steel or stainless-steel

Did you know?

A disc type can be installed between two flanges

Flange back check valves can be specially requested in 12"

A threaded back check valve can be installed inside a threaded flange

  • Photos of Threaded Back Check Valves

    Back check valves (threaded)

    One-way valves that keep container contents from escaping if piping or fittings accidentally break. Often found in gas installations that require a high, single directional flow.

    See our Threaded back check valves

Get in touch!

Whether you already know what you need, or you would like the opinion of an expert, we are always ready to help you out.