1 inch Brass Cap

1 inch Lead-Free Brass Pipe Cap – Threaded Fitting for Sealing Pipe Ends

The 1 inch Lead-Free Brass Cap is a threaded pipe fitting designed to terminate and seal the end of a male-threaded pipe in potable water, air, or non-corrosive gas systems. Precision-machined for compatibility with standard NPT pipe threads, this fitting is fabricated from lead-free brass to meet current federal and state potable water regulations, including the Safe Drinking Water Act (SDWA).

Its robust construction, corrosion resistance, and consistent thread quality make it a preferred choice for professionals completing pressure-rated terminations in both new installations and system repairs. The cap’s heavy-wall design helps maintain sealing integrity under pressure and temperature fluctuations in above-ground or enclosed system configurations.

Performance Features

• ✅ Material: Cast lead-free brass alloy (per ASTM B584, UNS C89833 or equivalent)
• ✅ Connection: 1 inch Female NPT
• ✅ Compliance: NSF/ANSI 61 and 372 certified for use in potable water systems
• ✅ Pressure Rating: Suitable for use in systems up to 125–200 psi (verify based on application and system specs)
• ✅ Temperature Range: Typical service range up to 250°F depending on system compatibility

Installation Guidelines

Apply thread sealant or PTFE tape to the male threads prior to installation. Hand tighten followed by wrench torque as needed, ensuring not to overtighten and damage threads. Proper installation practices, including pressure testing, are essential to ensure leak-free operation. Not recommended for use in systems with aggressive chemicals or corrosive vapors without material compatibility confirmation.

Common Applications

Used to cap unused or future branch lines, service stubs, or as part of isolation procedures in maintenance operations. Appropriate for:

• Potable water distribution systems
• Hydronic heating loops
• Air compressor lines (low-pressure)
• Temporary system closures during pressure testing or flushing

Code Compliance Note

This fitting complies with federal low-lead laws and applicable plumbing codes requiring certified components in drinking water systems. Suitable for use in systems requiring NSF 61/372 components.

The 1 inch Lead-Free Brass Pipe Cap offers a dependable termination solution for contractors requiring long-term performance, compatibility with NPT standards, and assurance of lead-free compliance. Suitable for use in a wide range of building mechanical and plumbing systems, this component provides sealing integrity with minimal installation time and long service life.