Sigma 810040618 Malleable Iron Pipe Tee 1x3/4x1 in 150 Lb

Product Description

The SIGMA 810040618 is a malleable iron pipe tee rated at 150 lb, finished in black oxide. This fitting connects three sections of pipe in a branch configuration, directing flow from a main run to a lateral outlet. It is used in black iron piping systems for gas distribution, steam, and industrial fluid conveyance. The nominal size is 1 x 3/4 x 1 inches, making it a reducing tee with a 3/4-inch branch off a 1-inch run. Plumbers, pipefitters, and gas line technicians are the primary installers of this fitting class.

This tee is suited for residential and light commercial applications including natural gas and propane distribution lines, steam heating systems, and low-pressure air or fluid piping. The 150 lb pressure rating covers standard service conditions found in most building mechanical systems. The black oxide finish provides corrosion resistance appropriate for interior dry piping and is standard on gas-line fittings.

Key Features

• Malleable iron construction provides strength and thread engagement superior to cast iron in threaded connections
• 150 lb pressure class rated for standard-service gas, steam, and fluid systems
• Black oxide finish standard for interior gas and steam piping applications
• Reducing tee configuration: 1-inch run, 3/4-inch branch, 1-inch outlet
• Threaded NPT connections compatible with standard black iron pipe and fittings

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 150 lb threaded malleable iron piping systems using standard NPT pipe threads.

Installation Notes

Installation is performed by licensed plumbers or pipefitters in accordance with applicable codes such as the IFGC for gas systems or the IPC for water and steam systems. Shut off and depressurize the line before disassembly or installation. Apply an approved thread sealant or PTFE tape to male threads before makeup. Do not over-torque threaded connections in malleable iron fittings, as cracking can result.

Technical Specifications

• Fitting Type: Pipe Tee (Reducing)
• Nominal Size: 1 x 3/4 x 1 inches
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Black Oxide

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 810040618