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Non-Return Valve NV200

Data sheet Quotation request

Non-return valve 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
  • ultra-low opening pressures (approx. 0.058 psi), ultra-low pressure drop
  • ideal for biogas desulphurization systems
  • 2.03 X 2.54 inches, 23.56 - 29.8 oz
  • NEW: „smart-option“ for connected manufacturing

This model is also available in Stainless Steel

Information

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

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 (Model NV200 – approx. 4 mbar)
  • no leaks – using 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
  • reduce installation costs – the spring-loaded valve is not affected by gravity and may be installed in any orientation

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
  • 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 (only NV200, G 1)

On request:

“Smart-option” including

  • measurement of outlet pressure
  • measurement of outlet gas temperature
  • analogue 4 – 20 mA signals

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

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 NV200 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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