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The PARKER 3/4 HP-S is a hex plug fitting designed to seal pipe ends in industrial fluid and pneumatic systems. Machined from zinc-plated steel, it provides corrosion resistance in demanding environments. The male MNPTF thread connection forms a pressure-tight seal without a separate sealant in many applications. Rated to 5,500 psi maximum working pressure, this plug handles high-pressure hydraulic and pneumatic lines where a reliable dead-end seal is required. Plumbers, pipefitters, and industrial maintenance technicians install this type of fitting during system assembly, pressure testing, or when capping unused ports.
This hex plug is suited for use in industrial piping systems, hydraulic circuits, pneumatic manifolds, and similar applications where a 3/4 inch male MNPTF port needs to be closed off. The 1-1/16 inch hex drive allows installation with a standard wrench, making it practical for both new construction and field service work. It is appropriate for residential and commercial industrial settings wherever high-pressure pipe plug connections are required.
Designed as an OEM-style replacement or new-installation hex plug for industrial piping, hydraulic, and pneumatic systems using 3/4 inch MNPTF threaded ports rated to 5,500 psi.
Installation is typically performed by licensed pipefitters or industrial maintenance technicians. Depressurize and isolate the system completely before installing or removing any pipe plug. Use a properly sized wrench on the hex drive and apply appropriate thread sealant per the system fluid and pressure requirements. Follow applicable piping codes and the system manufacturer guidelines for torque and sealant specifications.
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