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Non-Return Valve 654-ES

Data sheet Quotation request

Non-return valve stainless steel for the prevention of unintended gas mixtures, for flow rates up to 11,059 scfh (air), up to 870 psi

  • safety element: non-return valve [NV]
  • every non-return valve 100% tested
  • ultra-low opening pressures (approx. 30 mbar), ultra-low pressure drop
  • also ideal for use with corrosive gases
  • small and light: 0.55 X 1.64 inches, 1.56 oz
  • up to 870 psi working pressure (O2: up to 435 psi)
  • air max. 4,589 scfh (free flow-off)

     

Information

WITT non-return valves (check valves) for reliable protection against dangerous reverse gas flow. Every non-return valve (check valve) 100% tested.

Benefits:

  • a spring-loaded non-return valve (check valve) prevents a reverse flow of gases which could lead to unwanted gas mixtures
  • low pressure drops – using complex valve assembly with low opening pressures (approx. 30 mbar)
  • no leaks – using a spring-loaded valve assembly with elastomer sealing
  • diverse applications – useful for many technical gases
  • reduce installation costs – the spring-loaded valve is not affected by gravity and may be installed in any orientation
  • compact design, small mounting dimensions

Operation / Usage:

  • non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow
  • WITT non-return valves (check valves) may be mounted in any position / orientation
  • the maximum ambient / working temperature is 70 °C / 158 °F

Maintenance:

  • annual testing of the non-return valve (check valve) and body leak tightness is recommended
  • WITT is happy to supply special test equipment
  • non-return valves (check valves) are only to be serviced by the manufacturer

Approvals
Company certified to ISO 9001 and PED 97/23/EC Module H
Cleaned for Oxygen Service according to EIGA IGC Doc 13/12/E: Oxygen Pipeline and Piping Systems

Downloads

Here you find all downloads for the product.

Accessories

Test Rig 722

For the annual testing of WITT flashback arrestors and check valves

Applications

Non-Return Valve 654-ES is used in following areas:

Products

Give us a call!

Headquarters: +49 (0)2302-8901-0
WITT USA: +1 770-664-4447

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