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Non-Return Valve 600-ES

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Non-return valve, stainless steel, for the prevention of unintended gas mixtures, for flow rates up to 67,067 scfh (air), up to 232 psi

  • safety element: non-return valve [NV]
  • every non-return valve 100% tested
  • EN730-2, DVGW-approval
  • ultra-low opening pressures (approx. 0.058 psi), ultra-low pressure drop
  • ideal for Biogas desulphurization systems
  • also ideal for use with corrosive gases
  • 2.03 X 2.54 inches, 23.56 - 29.8 oz

     

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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 back feeding of gases which could lead to unwanted gas mixtures
  • low pressure drops – using complex valve assembly with low opening pressures
  • no leaks – using of a spring loaded valve assembly with elastomer sealing
  • stainless steel filter (100 μm) in the gas inlet protects the non-return valve (check valve) against dirt contamination, extending the service life
  • diverse applications – useful for many technical gases

Operation / Usage:

  • non-return valves (check valves) are used to protect equipment and pipelines against dangerous reverse gas flow. Use is possible for applications according to EN 746-2
  • ideal for use with corrosive gases in the chemical industry, process technology or in the laboratory area
  • 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. The dirt filter may be replaced by competent staff

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

Test Rig 722

For the annual testing of WITT flashback arrestors and check valves

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