ROSS CONTROLS PNEUMATIC SHUT OFF VALVE 2773A5072 | eBay
Ross 3573D4211W Double Valve - 1/2" x 1/2" NPT, L-G Monitor, Basic Size 4, 24 VDC, Override Not Included, DIN Connection | Centro Inc.
Press Double Valves | ROSS EUROPA GmbH
Ross Controls 1968B3007 19 Series Flow Control Valve, Standard Profile, High Capacity, Knob Adjustment, Offset Inline Port 1 Threaded 3/8, Port 2 Threaded 3/8, NPT: Amazon.com: Industrial & Scientific