Midland Industries 79480 Aluminum Fpt Pipe Cap 3 Inch

Product Description

The MIDLAND INDUSTRIES 79480 is a 3-inch female pipe thread (FPT) cap machined from aluminum, used to seal the open end of a threaded pipe or fitting. It threads directly onto a male-threaded pipe end to close off flow, protect internal threads during storage or transport, or permanently cap an unused line. The 3-8 thread designation confirms standard NPT thread form. Aluminum construction keeps the fitting lightweight and resistant to corrosion in non-caustic environments. Licensed plumbers, pipefitters, and HVAC technicians install this type of cap across a wide range of piping systems.

This cap is suited for residential and commercial piping applications where aluminum is an acceptable material. Typical uses include capping unused ports on manifolds, sealing dead-leg lines, and protecting threads on stored or staged pipe assemblies. Its 3-inch FPT connection accommodates standard male-threaded pipe ends in plumbing, HVAC, and general industrial piping layouts.

Key Features

• 3-inch FPT connection threads directly onto standard male-threaded pipe ends
• Aluminum construction offers lightweight handling and corrosion resistance in compatible service environments
• 3-8 thread form matches standard NPT thread specifications
• Suitable for sealing unused ports, capping dead legs, or protecting threads during storage
• Minimum order quantity of 1 allows single-unit procurement

Compatibility

Designed as a standard aluminum FPT pipe cap for use with 3-inch male NPT-threaded pipe ends in general plumbing, HVAC, and industrial piping applications.

Installation Notes

Shut off and depressurize the line before installing or removing any pipe cap. Apply thread sealant tape or paste appropriate for aluminum fittings and the specific service fluid before threading the cap onto the male pipe end. Hand-tighten first, then use a pipe wrench to snug - avoid over-torquing aluminum fittings, as the material is softer than steel and susceptible to thread damage. Follow applicable IPC or IFGC guidelines for the specific piping system being serviced.