ROSS Controls D1958A1010 Right Angle Check Valve

ROSS Controls D1958A1010 is a right-angle pilot-operated check valve in the 19 Series that enables reliable cylinder position holding by blocking reverse flow when the pilot is not energized. Designed for pneumatic circuits, this model provides a 2/2 flow path that opens only under pilot pressure, allowing forward flow while preventing backflow to maintain the last actuator position. The unit features a 1/8 inch port size on both ports, configured as a threaded banjo connection with Port 1 female threads and Port 2 male threads, and uses M5 port threads for the banjo mounting hardware. The 19 Series accommodates a pressure range from 5 to 150 psi (0.3 to 10 bar), making it suitable for standard pneumatic automation tasks in factories and assembly lines. Typical applications include holding a cylinder in position in automation cycles where gravity or leakage could cause drift when the control valve is centered or unpowered. This exact variant, D1958A1010, is documented by ROSS Controls in safety-related catalogs and master product literature, confirming its right-angle geometry, port configuration, and performance envelope.