Gas Non-Return Valve GRV20 Brass G1/2 Female

Gas Safety Device (Without Flame Arrestor)

Industrial gas safety device designed for the protection of ring lines, tapping points, and points of use. This unit provides reliable pressure-related safety functionality but is not flashback resistant and not flashback proof, making it suitable for applications where flame arresting is not required.

Engineered for stable operation with position-independent low cracking pressure, it supports a wide range of fuel, oxidising, and inert gases in industrial gas distribution systems.

Technical Specifications

• Nominal diameter: DN 20

• Inlet / Outlet: G 1/2" RH Female (DIN ISO 228)

• Cracking pressure: 4–8 mbar (position-independent)

• Working pressure: up to 25 bar

• Inlet filter: 100 μm

• Temperature range: –20 °C to +70 °C

• Materials: Brass and Aluminium Alloy

Gas Compatibility

• For use with: town gas, grid gas, natural gas, LPG, cleaned biogas

• Suitable for: oxygen, combustible gases, and inert gases

Key Features

• Safety device for ring lines and points of use

• Low cracking pressure for sensitive system protection

• Wide gas compatibility across fuel, inert, and oxidising gases

• Robust industrial construction for long service life

• Designed for gas systems up to 25 bar