Asc Engineered Solutions 1B.NMCAP Pipe Cap 1-1/4 in Fnpt

Product Description

The ASC Engineered Solutions 1B.NMCAP is a straight pipe cap rated for 150 lb service in a 1-1/4 inch FNPT (female national pipe thread) configuration. Constructed from galvanized malleable iron, this cap is designed to terminate the end of a threaded pipe run by sealing off an open female-threaded fitting. The galvanized finish provides corrosion resistance for use in wet or exposed environments. Domestically manufactured, it meets the dimensional and material standards expected in commercial and industrial piping systems. Plumbers, pipefitters, and mechanical contractors typically install this fitting during rough-in work or system capping procedures.

This pipe cap is suited for use in low-pressure gas, water, and steam piping systems where a 150 lb malleable iron fitting is specified. Common applications include natural gas distribution lines, steam heating systems, compressed air headers, and potable water systems. It is installed wherever an open pipe end must be permanently or temporarily sealed during construction, testing, or system modifications. The FNPT connection threads directly onto a male-threaded pipe end without additional adapters.

Key Features

• 1-1/4 inch FNPT connection threads onto standard male NPT pipe ends
• 150 lb pressure rating suitable for low-pressure gas, water, and steam service
• Malleable iron construction provides durability and impact resistance
• Galvanized finish resists corrosion in wet and exposed installations
• Domestically manufactured to standard pipe fitting dimensions

Compatibility

Designed as an OEM-style replacement and standard fitting for 1-1/4 inch male NPT threaded pipe ends in 150 lb malleable iron piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, including IPC and IFGC requirements where relevant. Always depressurize and isolate the pipe section before threading on the cap. Apply an appropriate thread sealant or PTFE tape to the male threads before installation to ensure a leak-free connection. Do not over-tighten, as malleable iron fittings can crack if excessive torque is applied.

Technical Specifications

• Connection Size: 1-1/4 inches
• Connection Type: FNPT (Female National Pipe Thread)
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 1B.NMCAP