Non-return Valve / Check Valve ULTRA 20

Ultra-performance protection against gas return: compact, quiet, ideal for low pressure applications. Opening pressure approx. 4 mbar, working pressure up to 16 bar, G / NPT 1", 1/2", 3/4"

  • 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
  • compact and light: 52 X 67,5 mm, 510 g, G / NPT 1", 1/2", 3/4"
  • minimal noise emission
  • dirt filter (100 μm) on gas inlet
  • ideal for applications where low pressures are used e.g. thermal processing, biogas etc.

This model is also available in Stainless Steel

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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 drop – 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 to DIN EN ISO 5175-2
  • available in brass or stainless steel
  • 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
  • the same size as model NV200 for easy replacement

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
  • in ambient temperatures above -20 °C / 68 °F and below +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 and PED 2014/68/EU Module H
CE-marked according to PED 2014/68/EU
Cleaned for Oxygen Service according to: EIGA IGC Doc 13/12/E: Oxygen Pipeline and Piping Systems