Midland Industries 79471 Aluminum Pipe Cap 1/4 in Fpt

Product Description

The MIDLAND INDUSTRIES 79471 is an aluminum pipe cap designed to seal and close off 1/4 in female pipe thread (FPT) connections. It threads onto exposed male pipe ends to terminate a line, protect threads during storage or transport, or isolate a branch during system modifications. The cap uses a 1/4-18 NPT thread form and is machined from aluminum, making it a lightweight, corrosion-resistant choice for low-pressure piping applications. Plumbers, pipefitters, and HVAC technicians keep fittings like this on hand for routine system maintenance and shutoff work.

This cap is suited for use in residential and light commercial piping systems where a 1/4 in FPT termination is needed. Typical applications include capping unused ports on manifolds, valves, and distribution assemblies, as well as protecting threaded connections on aluminum pneumatic and fluid lines. It is also used during pressure testing to isolate specific sections of a system.

Key Features

• 1/4 in FPT (female pipe thread) connection for direct thread-on installation
• 1/4-18 thread specification for standard NPT compatibility
• Aluminum construction offers lightweight corrosion resistance
• Compact cap profile for use in tight or restricted spaces
• Minimum order quantity of 1 for single-unit procurement

Compatibility

Designed as an OEM-style replacement or maintenance fitting for piping systems using standard 1/4 in male NPT threaded pipe ends.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC or IFGC requirements. Depressurize and drain the line before threading on the cap. Apply thread sealant tape or paste to the male pipe threads before installation. Hand-tighten first, then wrench-tighten to avoid cross-threading or cracking the aluminum fitting.