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The PARKER MV620S is a hydraulic control valve designed to regulate flow in hydraulic systems operating at pressures up to 5,000 psi. Built with a steel body and nitrile seals, this valve is rated for a maximum flow rate of 5 GPM and features a 9/16-18 UNF threaded inlet. The knob handle provides direct manual control for flow adjustment without additional tooling. At 2.38 inches overall length and 2 inches overall width, this is a compact valve suited for installations where space is limited. Hydraulic technicians and fluid power specialists install this valve in mobile equipment, industrial machinery, and related hydraulic circuits.
The MV620S is appropriate for use in hydraulic systems requiring manual flow control at moderate-to-high working pressures. Its UNF thread standard and 9/16-18 thread size make it compatible with standard hydraulic fittings commonly found in both mobile and stationary hydraulic applications. The steel body construction makes it suitable for demanding environments where durability under continuous pressure cycling is required. This valve is typically installed by hydraulic technicians or mechanical tradespeople performing line work on hydraulic circuits in industrial or equipment service settings.
Designed as an OEM-style replacement or direct-install manual flow control valve for hydraulic systems using 9/16-18 UNF threaded connections rated to 5,000 psi and 5 GPM.
Installation should be performed by a qualified hydraulic technician familiar with hydraulic circuit safety procedures. Depressurize and isolate the hydraulic circuit completely before removing any existing valve or fitting. Inspect thread condition before installation and apply appropriate thread sealant compatible with hydraulic fluid. Verify torque and leak integrity after pressurizing the system to operating pressure.
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