Sigma 819900689 Malleable Iron Pipe Cap 1-1/2 in Fnpt 150 Lb

Product Description

The SIGMA 819900689 is a FIG 3124 malleable iron pipe cap rated for 150 lb service pressure. This threaded cap is designed to seal the open end of a pipe, closing off a run in a piping system. It features a female national pipe taper (FNPT) thread end style, a hot-dip galvanized finish for corrosion resistance, and a 1-1/2 inch nominal pipe size. Licensed plumbers and pipefitters install this fitting in gas, water, and industrial piping applications where a permanent or semi-permanent pipe terminus is required.

This pipe cap is suited for residential and commercial plumbing, HVAC hydronic systems, fire protection rough-in, and general industrial piping. The galvanized malleable iron construction makes it appropriate for above-ground and moderately corrosive environments. It is commonly installed to cap off branch lines during system commissioning or to seal unused outlets in a distribution manifold.

Key Features

• FIG 3124 malleable iron construction for strength and moderate impact resistance
• Galvanized finish provides corrosion protection in exposed or damp environments
• FNPT threaded end for standard tapered pipe thread engagement
• 150 lb pressure rating suitable for typical commercial and residential service
• 1-1/2 inch nominal pipe size for common distribution piping

Compatibility

Designed as an OEM-style replacement fitting compatible with standard 1-1/2 inch NPT threaded piping systems rated to 150 lb service class.

Installation Notes

This fitting is installed by licensed plumbers or pipefitters following applicable IPC and IFGC code requirements for the specific service medium. Always depressurize and isolate the piping system before installing or removing threaded fittings. Apply an approved thread sealant or PTFE tape to the male pipe threads before engagement. Do not over-torque malleable iron fittings, as the material can crack under excessive force.

Technical Specifications

• Nominal Pipe Size: 1-1/2 inches
• End Style: FNPT (Female National Pipe Taper)
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Figure Number: FIG 3124

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 819900689