1PSC100-P-20-S-XXX

The 1PSC100-P-20-S-XXX valve is produced by Vickers for the Sequence and Unloading Valves series and directs hydraulic flow to secondary circuits once a set pressure is reached. A screw-in cartridge installation allows quick insertion into a manifold, and the 1-14 UNS thread engages securely with the cavity wall. The designated A880 cavity standardizes pocket dimensions so replacement parts remain interchangeable across blocks. An external adjustment lets technicians fine-tune operating pressure without removing the unit. Proper seating requires 60 Nm of torque, preventing joint loosening under pressure cycles. The valve body measures 109.982 mm in length and 25.400 mm in width, dimensions that help designers allocate compact bore space. Total mass is 0.17 kg, making manual handling straightforward during assembly or service. Three ports organize inlet, outlet, and drain connections, simplifying circuit layout in automation manifolds.

At commissioning the valve is factory preset to 110 bar, enabling typical sequence functions without initial calibration. It remains functional down to 10 bar, which supports low-pressure standby conditions, and it tolerates continuous operation up to 210 bar before the spool shifts fully open. The housing is rated for 350 bar, adding structural margin against transient pressure spikes. A rated flow capacity of 150 l/min lets the unit serve medium-size actuators while maintaining stable pressure control. Internal leakage is limited to 35 mL/min at 280 bar, a figure designers use to estimate heat generation and tank return flow. Buna-N seals resist common petroleum-based fluids, sustaining seal integrity through temperature changes and cycling. Together these operating limits and material selections define predictable performance for automated hydraulic systems that require sequence or unloading functions.