Ross Controls 2751A3901 Pneumatic Control Valve

The Ross Controls 2751A3901 is a 27 Series pilot-operated check valve designed for inline installation in pneumatic circuits where backflow must be prevented while enabling controlled pilot actuation. This 2/2 pneumatic PO check valve is offered in inline mounting with options for pressure relief, making it suitable for safety‑related applications that require compact, integrated valve packages. It features a 3/8 in port size and a 3/8 in body size, with a 1/4 in signal port to receive the pilot signal, and a flow coefficient (Cv) of 3.8, enabling substantial forward flow while reliably blocking reverse flow. The unit weighs about 1.3 lb (0.6 kg) and uses pneumatic actuation to open the check valve in response to a pilot signal, delivering precise, direction-controlled fluid power in tight spaces. As part of the 27 Series, the 2751A3901 combines inline compactness with dependable backflow control for a range of industrial pneumatic systems.