Sigma 810016618 Malleable Iron Street Elbow 1 in 150 Lb

Product Description

The SIGMA 810016618 is a FIG 3103 standard street elbow fitting designed for threaded pipe assemblies in plumbing, gas, and mechanical piping systems. It features a male NPT inlet on one end and a female NPT outlet on the other, allowing it to connect directly to a pipe without requiring a separate coupling or nipple. Constructed from black malleable iron and rated at 150 lb, this fitting is suited for low-pressure steam, water, gas, and air service. Licensed plumbers and pipefitters install this type of fitting in both residential and light commercial applications.

This street elbow is a standard 90-degree directional fitting used where a pipe run must change direction and space is limited. The MNPT x FNPT configuration eliminates the need for an extra nipple, making it a practical choice in tight mechanical rooms, utility spaces, and inline piping assemblies. It is appropriate for use in gas distribution piping, compressed air lines, hydronic heating systems, and general plumbing rough-in work where malleable iron fittings are specified or required by code.

Key Features

• FIG 3103 standard street elbow geometry for 90-degree directional changes
• 1-inch nominal size with MNPT x FNPT end configuration eliminates need for extra nipple
• 150 lb pressure rating suitable for steam, water, gas, and compressed air service
• Black malleable iron construction provides ductility and resistance to cracking under stress
• Standard NPT threading ensures compatibility with common pipe and fitting stock

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 1-inch nominal threaded malleable iron piping systems rated at 150 lb.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Plumbing Code, or the International Fuel Gas Code where applicable. Shut off and depressurize the affected piping system completely before disassembling or installing any fittings. Apply an appropriate pipe thread sealant or PTFE tape to the male threads before assembly and tighten to hand-tight plus the number of turns recommended for the pipe size. Do not over-torque malleable iron fittings, as excessive force can crack the casting.

Technical Specifications

• Figure Number: FIG 3103
• Nominal Size: 1 inch
• End Style: MNPT x FNPT
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Black

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 810016618