3/8 inch Galvanized Iron Cap

3/8" Galvanized Iron Pipe Cap – Threaded Fitting for System Termination

The 3/8" Galvanized Iron Cap is a threaded fitting used to terminate the end of a male-threaded iron or steel pipe. Manufactured from galvanized iron, this cap offers mechanical strength and corrosion resistance in standard plumbing and mechanical applications.

Product Features

• Material: Galvanized iron for enhanced corrosion protection in above-ground and non-potable water systems
• Nominal Size: 3/8 inch
• Connection Type: Female NPT threaded
• Application: Terminates open pipe ends to maintain pressure integrity and prevent fluid discharge

Performance Considerations

This cap is suitable for use in low to moderate pressure systems and offers dependable sealing when installed using appropriate thread sealing compounds or PTFE tape. It is designed to maintain structural integrity in systems transporting water, air, oil, or other non-corrosive fluids.

Installation Notes

Ensure threads are clean before installation. Apply thread sealant or tape to the male threads of the pipe to achieve a tight seal. Use a pipe wrench or adjustable wrench to tighten the cap—do not over-torque, as this may cause thread damage or compromise sealing surfaces. Verify alignment and support of the pipe section before final torque application.

Common Uses

This fitting is used in mechanical systems for pipe closure, pressure testing points, and in maintenance or retrofit scenarios where future pipe extensions may be planned. Typical applications include hydronic heating systems, compressed air lines, and general utility piping.

Standards and Compliance

Manufactured to meet dimensional and performance standards for threaded galvanized fittings in accordance with ASTM specifications. Not recommended for potable water systems unless specifically marked lead-free and compliant with NSF/ANSI 372.