The Low Pressure Helium Valve from Orbital Propulsion Centre is a Spacecraft Valve with Mass 0.06 kg, Operating Pressure Up to 33 bar, Burst Pressure 1240 bar, External Leakage Time 2.8 x 10-4 scc/sec, Internal Leakage Time 1 x 10-6 scc/s. More details for Low Pressure Helium Valve can be seen below.
