Parker 3/4 Hhp-s Hollow Hex Plug 3/4 in Mnptf 5500 Psi

Product Description

The PARKER 3/4 HHP-S is a hollow hex plug designed for industrial pipe systems requiring a secure, pressure-rated male threaded closure. Machined for MNPTF (male national pipe taper fuel) connections, this fitting accepts a 3/4 inch male thread and is rated to a maximum working pressure of 5,500 psi. The hollow hex design allows for standard hex wrench installation without the need for specialized tooling. At 5/8 inch overall length and a 9/16 inch hex size, it fits into tight plumbing assemblies common in hydraulic, pneumatic, and industrial fluid systems. Plumbers, pipefitters, and fluid system technicians install this type of plug to cap or test ports in high-pressure lines.

This plug is suited for industrial and commercial pipe applications where a threaded port closure is required on MNPTF-configured fittings. Typical installations include hydraulic manifolds, pneumatic panels, test port closures, and instrumentation tie-ins operating at or below 5,500 psi. The compact 5/8 inch length makes it a practical choice in space-constrained panel or manifold assemblies. It ships as a single unit, making it appropriate for spot replacements or low-quantity service calls.

Key Features

• Rated to 5,500 psi maximum working pressure for high-pressure industrial service
• 3/4 inch MNPTF male thread connection provides a tapered, leak-resistant seal
• 9/16 inch hex size accommodates standard wrench or socket installation
• 5/8 inch overall length suits tight-clearance manifold and panel installations
• Hollow hex body design simplifies torque application during installation

Compatibility

Designed as an OEM-style replacement or service fitting for industrial pipe systems using 3/4 inch MNPTF threaded ports rated to 5,500 psi.

Installation Notes

Installation should be performed by a licensed pipefitter or qualified fluid systems technician. Depressurize and isolate the system completely before removing or installing any threaded plug. Apply appropriate thread sealant compatible with the system fluid before threading the plug into the port. Follow applicable industry codes and the system manufacturer guidelines for torque and sealant procedures.