1/2 inch Brass Cap

1/2" Brass Cap – Threaded Fitting for Pipe Termination and Isolation

The 1/2" Brass Cap is engineered for sealing the end of a male-threaded pipe or fitting in pressurized and non-pressurized plumbing systems. Manufactured from corrosion-resistant lead-free brass, it provides durable performance in a wide range of commercial and residential applications.

Commonly used for system isolation, pressure testing, or temporary termination, this cap is compatible with standard NPT-threaded brass, copper, CPVC, or galvanized pipe assemblies. The high-precision internal threads ensure a reliable seal when used with approved thread sealants or PTFE tape.

Key Features

• ✅ Lead-Free Brass – Compliant with ANSI/NSF 61 and NSF 372 for potable water use.
• ✅ Machined Threads – Cut to NPT standards for tight, secure engagement with male fittings.
• ✅ Corrosion Resistant – Suitable for long-term service in water distribution systems and hydronic piping.

Technical Specifications

• Size: 1/2 inch nominal pipe size
• Connection Type: Female NPT
• Material: Lead-free brass (CW510L or equivalent)
• Pressure Rating: Up to 200 PSI (non-shock)
• Temperature Range: -20°F to 180°F (water systems)
• Certifications: NSF/ANSI 61, NSF 372, and compliant with UPC and IPC codes

Installation Guidance

Thread sealant or PTFE tape must be applied to the male threads before installation to ensure leak-tight performance. Hand-tighten initially, then use an appropriate wrench to apply final torque without over-tightening. Avoid damage to mating threads and inspect surfaces prior to installation. Not intended for permanent pressurized system isolation where valve use is recommended.

Applications

This fitting is commonly used in domestic and light commercial systems to terminate unused outlets, cap off stub-outs, or seal line extensions during pressure testing. Suitable for both hot and cold water lines, it’s also applicable in HVAC, hydronic heating, and compressed air systems when compatible with fluid and pressure conditions.

Did You Know?

Under the U.S. Safe Drinking Water Act, all fittings used in potable systems must contain ≤0.25% lead by weighted average. Brass components that meet this standard must be clearly marked and certified to ensure regulatory compliance.

Designed to meet the requirements of professional plumbing installations, the 1/2" Brass Cap offers dependable performance and corrosion resistance for long-term system integrity. Ideal for any job requiring reliable pipe termination in code-compliant applications.