WITT Stainless Steel Non-Return Valves Get latest price

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Witt non-return valves for reliable protection against dangerous reverse gas flow.

Probably the best non-return valves in the world

Specification

• Max. Working Pressure: 16 bar
• Max. Flow (rated in air)
  • 600-ES: 1900 m3/hr
  • 338-ES: 3260 m3/hr
  • 339-ES: 8100 m3/hr
• Housing: Stainless steel
• Connections
  • 600-ES: 1/2"BSP, 3/4"BSP, 1"BSP
  • 338-ES: 1"BSP
  • 339-ES: 1 1/2"BSP, 2"BSP
• Gases
  • Town gas
  • Methane
  • Natural gas
  • LPG
  • Hydrogen
  • Oxygen
  • Compressed air
  • Corrosive and non-flammable gases

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 elastomer sealing
• stainless steel filter (100 microns) in the gas inlet protects the non-return valve against dirt contamination extending the service life
• diverse applications - useful for many technical gases

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
• ideal for use with corrosive gases in the chemical industry, process technology or in the laboratory area
• can be mounted in any position / orientation

Maintenance

• annual testing of the NRV and body leak tightness is recommended
• only serviceable by the manufacturer. The dirt filter may be replaced by competent staff

Approvals

• Company certified according to ISO 9001:2000 and ISO 14001 CE-marked according to PED 97/23/EG

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To contact Niche Gas Products about WITT Stainless Steel Non-Return Valves use Get a quote.