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Non-Return Valve NV2000

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Non-return valve for the prevention of unintended gas mixtures, for flow rates up to 945,994 scfh (air), for use in thermal processing plants, certified to EN746-2

  • safety element: non-return valve [NV]
  • every non-return valve 100% tested
  • EN730-2
  • ultra-low opening pressures (approx. 0.0725 psi), ultra-low pressure drop
  • dirt filter (100 μm) in the gas inlet
  • to be mounted in vertical position / orientation
  • 12.48-13.26 X 15.33-17.55 inches, 2000 oz
  • Information
  • Applications
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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 a reverse flow of gases which could lead to unwanted gas mixtures
  • low pressure drops – using complex valve assembly with low opening pressures, NV2000 approx. 5 mbar
  • 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
  • the NV2000 may be mounted vertical in bottom-up flow direction
  • 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
CE-marked in accordance with PED 97/23/EC
Cleaned for Oxygen Service according to EIGA IGC Doc 13/12/E: Oxygen Pipeline and Piping Systems

Non-Return Valve NV2000 is used in following areas:

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