The PR1 from Omnidea-RTG is a Spacecraft Valve with Mass 0.94 kg, 1.1 kg, Operating Pressure 350 bar, Regulated Pressure 1.2 to 2.5 bar, 2.5 to 8 bar, External Leakage Time 1.0 x 10-6 scc/s, Internal Leakage Time 0.5 scc/h. More details for PR1 can be seen below.
