XT031B30

The XT031B30 unit belongs to the Pressure Control Valves series and is produced by Vickers for use in hydraulic automation where stable system pressure is required. It employs a reversible action so pressure can be regulated in both flow directions without re-plumbing. Pilot actuation directs a small control flow to modulate the main passage, allowing precise response with minimal energy loss. The valve is intended for circuits that use hydraulic oil as the working fluid, ensuring material compatibility and predictable viscosity behavior. A maximum operating pressure of 1000 psi defines the upper limit for safe service, making the device suitable for medium-pressure mobile or industrial loops. Non-flange line mounting lets installers place the unit directly into piping runs, reducing manifold requirements. A 3/8 NPT port size matches common hose fittings and simplifies integration with existing equipment. The housing measures 142.2 mm in length so clearance must be provided when positioning the body and associated tubing.

During operation the valve can pass up to 7 gpm, a flow capacity that aligns with compact power units and modest actuator speeds typical of auxiliary functions. Internal galleries are proportioned to keep velocity within acceptable limits at that flow rate and to reduce cavitation risk. Thermal endurance reaches +155 °F, allowing continuous service near elevated reservoir temperatures without degrading performance. Nitrile seals are fitted to resist swelling in petroleum-based fluids and to maintain low leakage across the full pressure range. The assembled mass is 7.00 lb, light enough for unsupported line installation yet heavy enough to damp pressure pulsations. A body width of 68.1 mm must be considered when arranging adjacent components to avoid interference. These dimensional, thermal, sealing, and flow characteristics combine to provide reliable pressure control where bidirectional regulation and pilot-operated stability are needed.