Válvula antirretorno ULTRA 12

WITT Válvula antirretorno ULTRA 12

WITT Válvula antirretorno ULTRA 12WITT Válvula antirretorno ULTRA 12
WITT Válvula antirretorno ULTRA 12, latónWITT Válvula antirretorno ULTRA 12, latón
WITT Válvula antirretorno ULTRA 12, acero inoxidable y aluminioWITT Válvula antirretorno ULTRA 12, acero inoxidable y aluminio
Solicitud de oferta

Basada en ULTRA 10 – diseño a medida: diferentes combinaciones de materiales, con o sin filtro

  • libre combinación de materiales tanto para el cuerpo (latón, acero inoxidable) como para los asientos (NBR/CR, FPM/FKM, EPDM/FFKM), con o sin filtro
  • para aplicaciones especiales, por ejemplo, ambientes corrosivos, acetileno, diseño ligero, temperaturas superiores a 70 °C

basado en ULTRA 10 incluido:

  • elemento de seguridad: válvula antirretorno [NV]
  • cada válvula antirretorno se comprueba al 100%
  • DIN EN ISO 5175-2
  • muy bajas presiones de apertura (aprox. 4 mbar), pérdidas de carga extremadamente bajas
  • 35 X 60 mm, 221 g, G 1/2"
  • emisión mínima de ruido



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.

ULTRA 12 is based on ULTRA 10 and is customised according to the requirements of the customer - ideal for special requirements. A modular system which allows flexible material combinations for housing and sealings.


Combination possibilities

  • housing available in brass, stainless steel or aluminium
  • sealings of NBR, CR, FKM, EPDM, FFKM for example
  • with or without dirt filter in gas inlet



  • precisely tailored design for special requirements. For example corrosive environments, acetylene, ultra-lightweight construction, temperatures above 70 °C / 158 °F
  • 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 (approx. 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, stainless steel or aluminium
  • 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



  • 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

Company certified according to ISO 9001
Cleaned for Oxygen Service according to EIGA IGC Doc 13/12/E: Oxygen Pipeline and Piping Systems


Válvula antirretorno ULTRA 12 de aplicación en las siguientes áreas:


David Sagarna

David Sagarna


+ 34 942-835142

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