Poppet check valve TVR9 H2
for hydrogenUNFthreaded

Poppet check valve - TVR9 H2 - WEH GmbH Verbindungstechnik - for hydrogen / UNF / threaded
Poppet check valve - TVR9 H2 - WEH GmbH Verbindungstechnik - for hydrogen / UNF / threaded
Poppet check valve - TVR9 H2 - WEH GmbH Verbindungstechnik - for hydrogen / UNF / threaded - image - 2
Poppet check valve - TVR9 H2 - WEH GmbH Verbindungstechnik - for hydrogen / UNF / threaded - image - 3
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Characteristics

Type
poppet
Fluid
for hydrogen
Connexion
UNF
Body
threaded, male
Applications
high-pressure, for pipelines, for mobile applications
Material
stainless steel
Other characteristics
spring, anti-corrosion, with strainer
DN

4 mm
(0.157 in)

Pressure

Min.: 700 bar
(10,152.6 psi)

Max.: 875 bar
(12,690.8 psi)

Temperature

Min.: -40 °C
(-40 °F)

Max.: 85 °C
(185 °F)

Description

Description
The TVR9 H2 70 MPa check valve from WEH® is a high-performance one-way valve designed for hydrogen applications in road vehicles and hydrogen refuelling stations. It ensures unidirectional hydrogen flow and reliable prevention of backflow. Sealing elements are arranged to reduce the risk of damage from particles in the gas stream. The valve body is made of corrosion-resistant stainless steel with a robust internal design for long service life.

Construction and materials
Hydrogen-resistant sealing materials and a corrosion-resistant stainless steel housing. Optional integrated particle filter (10 μm) to protect sealing surfaces from contamination. Internal design minimises contact with debris while ensuring reliable sealing under high pressure.

Application
Intended for installation in hydrogen-powered road vehicles and suitable for use in hydrogen refuelling stations. Offered as a return-flow prevention device in accordance with DIN EN 736-1 for installation in H2 systems and pipelines.

Technical Data
Technical Nominal Size : 4 mm
Nominal Pressure PN : 70 MPa
Pressure Range : MAWP = 87.5 MPa according to ISO 17168 (PS = 875 bar)
Temperature Range : -40 °C up to +85 °C
Media Inlet : UNF 7/16"-20 male thread
Filter Material : 10 μm
Material : Corrosion resistant stainless steel
Sealing Material : Hydrogen resistant
Design : With or without integrated particle filter (10 μm)
Conformity / Tests / Approvals : Based on TN9 H2 70 MPa developed in accordance with ISO 17268:2020

Technical specifications
  • Technical Nominal Size: 4 mm
  • Nominal Pressure PN: 70 MPa
  • Pressure Range: MAWP = 87.5 MPa according to ISO 17168 (PS = 875 bar)
  • Temperature Range: -40 °C up to +85 °C
  • Media Inlet: UNF 7/16"-20 male thread
  • Filter Material: 10 μm
  • Material: Corrosion resistant stainless steel
  • Sealing Material: Hydrogen resistant
  • Design: With or without integrated particle filter (10 μm)
  • Conformity / Tests / Approvals: Based on TN9 H2 70 MPa developed in accordance with ISO 17268:2020


CAD / Downloads
CAD files and technical documentation are available; drawings and downloads are provided via the usual distribution channels.

Exhibitions

Meet this supplier at the following exhibition(s):

Hydrogen Technology World Expo
Hydrogen Technology World Expo

20-22 Oct 2026 Hamburg (Germany)

  • More information
    ADIPEC
    ADIPEC

    2-05 Nov 2026 Abu Dhabi (United Arab Emirates)

  • More information

    Other WEH GmbH Verbindungstechnik products

    Refueling Systems Hydrogen

    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.