This is SR series, 250 single stage, medium duty Regulator. Recommended for applications where slight delivery pressure increases (due to decreasing cylinder pressures) would not affect the performance characteristics of the work or test results.
Gas Service: Air, Oxygen, Inert Gas
Delivery Range (psig): 5-125
CGA 540 Connection: Oxygen
Gauge Range Inlet: 4000
Gauge Range Outlet: 200