Witt - Technology for Gases
Witt - Technology for Gases
Gas safety equipmentGas safety equipment

  • Non-return valves/check valves

    WITT non-return valves protect plants, pipelines and outlet Non-return valvepoints against reverse gasflow and meet all relevant standards and regulations. The product range of non-return valves includes a large choice of nominal sizes (up to DN200) and flow rates (0.35 – 106 SCFH).

    The sophisticated valve technology of WITT non-return valves provides small pressure drops making them also suitable for applications with smallest opening pressures. A high-quality sealing system with elastomeres prevents leakages and dirt filters at the inlet point assure long service life of the non-return valves.

    Some non-return valve models can also be used as flashback arrestors. All non-return valves can be mounted in any orientation, are available with all connections, in brass and stainless steel and are suitable for almost all technical gases.

    Quotation request


    More information:


  • Non-return valve 800es800-ES - spec sheet
    Non-return valve, high pressure
    Connections: 1/4''

  • Non return valve 600, R53NV100, NV200 - spec sheet
    Non-return valves
    Connections: 1/4'' - 1'' 

  • 600H-ES600-ES, 338-ES, 339-ES - spec sheet
    Stainless steel non-return valves
    Connections: 1/2'' - 2''

  • Non return valve NV 70/70U70, 70U - spec sheet
    Non-return valves
    Connections: 3/4'' - 1 1/2''

  • GRS338NV300, NV400 - spec sheet
    Non-retrun valves
    Connections: 1'' - 2''

  • Non return valve RV80/320BNV800, NV2000 - spec sheet
    Non-return valves
    Connections: DN80 - DN200

  • 600H600H, 600H-ES - spec sheet
    Non-return valves, high pressure
    Connections: G 1/2 - G1

  • GRS654654 - spec sheet
    Non-return valve
    Connections: 1/8''

picture for tip a friend
print content
picture for jump to page start
  • Company News
  • igases_miniGas technology app now with inert gas advisor
  • more
  • GRS600ESthReliable and efficient biogas desulphurisation
  • more
  • Exhibitions
  • Weldex
    06.10.- 09.10.2015

    Brazil Welding
    20.10. - 23.10.2015

  • more
  • New Products
  • Leak detection system

  • Dome pressure regulator 767 LE
  • Gasmixer MG500MG 500/1000-2ME ERC
  • KM 10-2 FLEX
  • Pressure regulating station 150NA auto - spec sheet