Parker 219P-12 Hollow Hex Plug 3/4 in Mnptf Brass

Product Description

The PARKER 219P-12 is a hollow hex plug designed for industrial pipe systems requiring a reliable, pressure-rated closure on a male-threaded port. Machined from brass, this plug uses a 3/4 inch MNPTF (male national pipe taper fuel) thread form and carries a maximum working pressure of 1,000 psi. The hollow hex drive allows installation and removal with a standard hex key rather than requiring external wrench flats, making it practical in tight or recessed port locations. Licensed plumbers, pipefitters, and HVAC technicians commonly install this fitting in fuel, hydraulic, and process piping applications.

This plug is suited for use in residential and light commercial systems where a 3/4 inch male pipe port must be capped or blanked off. It performs across a wide service temperature range, from -65 degrees F to 250 degrees F, making it compatible with both refrigeration and hot-water piping contexts. The MNPTF thread form is designed for use with fuel and oil lines in accordance with SAE standards, so it is a common choice in burner, fuel oil, and hydraulic manifold service work.

Key Features

• Brass construction resists corrosion in fuel, oil, and water service
• 3/4 inch MNPTF thread provides a tapered, pressure-tight seal
• 1,000 psi maximum working pressure rating
• Wide temperature range: -65 degrees F to 250 degrees F
• Hollow hex drive allows installation in recessed or close-clearance ports
• Meets SAE J530 and SAE J531 standards

Compatibility

Designed as a standard MNPTF hollow hex plug for industrial and commercial pipe systems with 3/4 inch male national pipe taper fuel threaded ports.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or HVAC technician. Shut off system pressure and depressurize the line before removing or installing any pipe plug. Apply an appropriate thread sealant or PTFE tape rated for the service fluid before threading the plug in. Refer to applicable codes such as the IPC or IFGC for torque and sealing requirements in your jurisdiction.