Non-Return Valve NV150 | wittgas.com

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Non-return Valve NV150

Data sheet Quotation request

Non-return valve for the prevention of unintended gas mixtures, for flow rates up to 80 m³/h (air), up to 16 bar

  • safety element: non-return valve [NV]
  • every non-return valve 100% tested
  • DIN EN ISO 5175-2
  • ultra-low opening pressures (approx. 4 mbar), ultra-low pressure drop
  • minimal noise emission
  • 35 X 60 mm, 221 g, G ½"
  • dirt filter (100 μm) on gas inlet

This model is also available in Stainless Steel and Aluminum

Information

WITT non-return valves for reliable protection against dangerous reverse gas flow.
Flow-optimised valve system causes very low pressure drop at minimal noise emission.
Every non-return valve 100% tested.

Benefits

  • a spring loaded non-return valve prevents back feeding of gases which could lead to unwanted gas mixtures
  • low pressure drops – using complex valve assembly with low opening pressures (ca. 4 mbar)
  • stainless steel filter (100 μm) in the gas inlet protects the non-return valve against dirt contamination, extending the service life
  • flow-optimised valve system for:

    - ultra low pressure drop
    - minimal noise emission

  • no leaks – using of a spring loaded valve assembly with elastomer sealing
  • in accordance with DIN EN ISO 5175-2
  • available in brass or stainless steel (ES)
  • 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 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 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 and body leak tightness is recommended
  • WITT is happy to supply special test equipment
  • non-return valves are only to be serviced by the manufacturer

Approvals
Company certified according to ISO 9001
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 non-return valves

Applications

Non-return Valve NV150 is used in following areas:

Products

WITT Zentrale

Give us a call!

Headquarters: +49 (0)2302-8901-0
WITT UK: +44 (0)1925 234466

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