ROSS Controls 1968A5107 is a 19 Series inline check valve designed to prevent backflow in pneumatic circuits. It has a 3/4" NPT port, a Cv of 8.6, and weighs 0.9 lb, delivering reliable one-way flow in compact inline installations. The valve supports pilot-supply isolation, cylinder hold-in, and protection of circuits from reverse flow, including vertical cylinder load-holding applications where a check valve in the cap-end supply line prevents gravity-induced drift when the directional control valve is centered. For BSPP-thread configurations, the D prefix designates BSPP variants (for example, D1968A5107).
