Hydraulic

For proper sealing, mating surface must be flat within 0.003 in. with a maximum 63 µin R_a surface finish.

• Recommended for use in single acting systems only
• Direct acting, poppet style, adjustable, cartridge type construction
• All pressure limiting valve configurations are designed to operate with up to 5,000 psi on the inlet (P) port.
• Seal material: Internal Seals are nylon
• Internal adjustment discourages tampering with pressure adjustment setting
• (Note: When adjusting the Pressure Limiting Valve, once the valve has closed in operation, changes in adjustment setting will not be reflected by a change in downstream pressure until inlet pressure falls allowing valve to reset to open.)
• Two-port design eliminates need for third fluid line to drain bypass flow (internal leakage) back to system reservoir
• Pressure Limiting Valve Cartridge is interchangeable with the Pressure Reducing Valve Cartridge in the same mounting cavity

Operation: The Pressure Limiting Valve (PLV) is a Normally Open (N/O) pressure control device. The vale remains open and fluid flows freely to downstream devices (from the valve to devices) until the pressure in the valve reaches the pressure (adjustable) set-point. At the set-point pressure the valve closes, blocking further flow and pressure rise to the downstream devices. The internal valve seal prevents fluid flow through the valve in either direction until the inlet pressure (power source to the valve) is reduced to near zero. The PLV is best suited for use in single-acting systems.