Cartridge Pilot Check Valve – LPC-10-3.4

Cartridge Pilot Check Valve (Part No. LPC-10-3.4) is a cartridge-style, pilot-to-open poppet check designed for screw-in manifold installations. It permits free flow from port 2 to port 3 while blocking reverse flow until a pilot signal is applied at port 1; the cartridge’s 3.5:1 pilot ratio means at least ~28% of the load pressure at port 3 is required at the pilot to open the valve. Key specifications include selectable cracking pressures (1.7, 3.4, 6.2 bar), rated operating pressure to 250 bar, very low internal leakage (2 drops/min at 250 bar), temperature range −40°F to +250°F, compatibility with mineral‑based fluids (7.4–420 cSt), and standard cavity/port options for SAE and G sizes—details from the manufacturer datasheet support these specs.

The LPC-10-3.4 provides secure load-holding and controlled release in hydraulic circuits, preventing cylinder drift or backflow until a deliberate pilot signal opens the path—ideal for safety circuits, machine tools, presses, mobile equipment, and any application requiring positive lock-up with remote release. Its compact cartridge form factor simplifies manifold integration, while low leakage and high pressure rating deliver reliable performance in high‑pressure systems; the part is available from industrial hydraulic suppliers as a screw‑in cartridge for straightforward replacement or OEM use.

Related categories: Valves · Cartridge Valves · Pilot Check Valves