Bosch Rexroth SV15-GA1-42 12 Hydraulic Pilot Operated Check Valve

The Bosch Rexroth SV15-GA1-42 12 hydraulic pilot-operated check valve (MNR R900503632) is a hydraulically piloted one-way valve in Rexroth's SV15 family. The valve combines a mechanical check element with a hydraulic pilot port, allowing flow when a pilot signal is present and blocking reverse flow when it is not energized, which helps prevent actuator drift and provides controlled re-opening under pilot control. The SV15-GA1-42 12 designation identifies the specific size/variant within Rexroth's catalog, enabling installation in compatible cavities or manifolds designed for Rexroth components. In routine hydraulic circuits, this type of valve is used to hold a line or actuator in position by preventing backflow and enabling forward movement when the pilot line is energized. The part number for ordering and cross-reference is R900503632, a Rexroth identifier used across official catalogs and service parts. This valve is designed for industrial hydraulic systems where precise backflow control is required and where pilot actuation can override the check, delivering fast response and reliable one-way flow control in a compact package.