Parker 220P-4 Slotted Pipe Plug 1/4 in Mnptf Brass

Product Description

The PARKER 220P-4 is a slotted pipe plug designed to close off open pipe ports in fluid and pneumatic systems. Machined from brass, it uses a 1/4 inch male MNPTF (male national pipe taper fuel) thread for a secure, tapered seal without the need for supplemental sealing compound in many applications. The plug carries a maximum working pressure rating of 1000 psi and a maximum working temperature of 250 degrees F, making it suitable for compressed air, hydraulic, fuel, and general industrial fluid service. It conforms to SAE J530 and SAE J531 standards. The slotted head accepts a flathead screwdriver for installation and removal without specialty tooling.

This plug is used by HVAC technicians, plumbers, pipefitters, and industrial maintenance trades to cap unused ports on valves, manifolds, pumps, and fittings. Common applications include capping service ports during pressure testing, blanking unused outlets on hydraulic blocks, and sealing open ports on compressed-air distribution lines. Its brass construction resists corrosion in wet environments and is compatible with a broad range of non-corrosive fluids and gases.

Key Features

• 1/4 inch MNPTF tapered male thread for a pressure-tight mechanical seal
• 1000 psi maximum working pressure per SAE J530 and SAE J531
• Operating temperature range: -65 degrees F to 250 degrees F
• Brass construction for corrosion resistance and durability
• Slotted head allows installation with a standard flathead screwdriver

Compatibility

Designed as an OEM-style pipe plug for any 1/4 inch MNPTF female port in industrial, fluid power, HVAC, and plumbing applications where a pressure rating of 1000 psi and brass material are appropriate for the service conditions.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with applicable pressure piping codes such as ASME B31 or local mechanical codes. Depressurize and isolate the system completely before installing or removing any pipe plug. Apply thread sealant tape or compound as required by the application and the fitting manufacturer guidance for MNPTF threads. Do not overtighten; use a torque appropriate for brass fittings in the port material to avoid thread damage or cracking.