Home About Us ParkerStore Events & News Careers Store Locator Contact Us     ---Parker Hannifin--- Parker Hannifin Intertec Sandvik Nuova Fima Tungum HIP Georgin Midland ACS Westlock Alcon Relief Valves Fittings Ball & Plug Check Valves Filter Valves Bleed & Purge Valves Metering valves Needle valves Manifold Valves Diaphragm Valves Pressure Regalators Back Pressure Regulator Vaporizing Regulators Flow Controller PFA / PTFE Products Analytical Systems Hose / Tubing Quick Couplings Tools & Accessories Solenoid Valves Pnematics RL4 Series   Handle for field maintenance Externally adjustable pressure settings while valve is in operation Seven different springs Manual override option with positive stem retraction is available for the full working pressure range Color coded springs and labels indicate spring cracking range PDF   Contact RH4 Series   Eight springs Manual override option with positive stem retraction is available for pressures up to 1500 psi (103 bar) Preset from factory and comes with standard springs PDF   Contact HPRV Proportional Valve   Captured moulded seat design is blow-out and chip resistant Color coded springs and labels indicate spring cracking range Unique Tru-Loc facility prevents accidental adjustment Low friction stem seal design prevents friction which increases accuracy of cracking pressure   and reseat pressure Balanced poppet design ensures consistent cracking pressure regardless of system back   pressure Multiple end connections available     PDF   Contact     Back to Top