Sigma 819900572 Fig 3124 Pipe Cap 3/4 Inch Fnpt 150 Lb

Product Description

The SIGMA 819900572 is a FIG 3124 malleable iron pipe cap with a 3/4-inch nominal size and female NPT (FNPT) end style, rated at 150 lb. Pipe caps are used to close off the end of a threaded pipe run, providing a secure seal in low-pressure piping systems. The galvanized finish offers corrosion resistance for use in a range of indoor and outdoor applications. This fitting is installed by licensed plumbers and pipefitters working on water, air, or gas distribution systems requiring standard threaded connections.

This pipe cap is suited for residential and light commercial plumbing, HVAC hydronic systems, and general-purpose piping where a 3/4-inch threaded termination is needed. The FNPT connection allows it to thread directly onto male-threaded pipe ends. The 150 lb pressure rating makes it appropriate for low- to medium-pressure service lines. The galvanized malleable iron construction is a common choice for above-ground and exposed piping installations.

Key Features

• 3/4-inch nominal FNPT end style for direct threading onto male NPT pipe ends
• 150 lb pressure rating suitable for low- to medium-pressure piping systems
• Malleable iron construction provides strength and impact resistance
• Galvanized finish for corrosion resistance in exposed or humid environments
• FIG 3124 designation for straightforward cross-referencing and replacement sourcing

Compatibility

Designed as a standard threaded pipe cap for use with 3/4-inch nominal male NPT threaded pipe in 150 lb malleable iron piping systems.

Installation Notes

Installation of threaded pipe fittings should be performed by a licensed plumber or pipefitter in accordance with the applicable plumbing code, such as the IPC or local jurisdiction standards. Shut off and depressurize the pipe system completely before removing or installing any fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before engagement. Do not over-torque the fitting, as malleable iron threads can be damaged by excessive force.

Technical Specifications

• Nominal Size: 3/4 inch
• End Style: FNPT
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Figure Number: FIG 3124

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 819900572