Sigma 810016212 1/2 in Malleable Iron Street Elbow 150 Lb

Product Description

The SIGMA 810016212 is a FIG 3103 standard street elbow fitting rated for 150 lb service in black malleable iron. It connects male NPT on one end to female NPT on the other, allowing a direction change directly off a threaded pipe or fitting without requiring a separate coupling. The 1/2 inch nominal size fits standard half-inch threaded pipe systems. Plumbers and pipefitters install this type of fitting in low-pressure gas distribution, steam, and water piping where a compact, in-line directional change is needed. The black finish indicates an uncoated iron fitting suited for gas and steam applications rather than galvanized water service.

This street elbow is suited for residential and light commercial piping systems operating within the 150 lb pressure class. Typical applications include natural gas supply lines, steam heating distribution, and compressed air systems where threaded malleable iron fittings are specified. The MNPT x FNPT configuration makes it particularly useful when transitioning directly from a male-threaded valve, regulator, or pipe end without adding fitting length.

Key Features

• FIG 3103 standard street elbow geometry for compact directional changes
• 150 lb pressure class rating suitable for gas, steam, and air service
• Malleable iron construction provides strength and thread integrity under vibration
• MNPT x FNPT end configuration eliminates the need for an additional coupling
• Black finish indicates uncoated iron appropriate for gas and steam lines
• 1/2 inch nominal size compatible with standard half-inch threaded pipe

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 150 lb threaded malleable iron piping systems using 1/2 inch nominal NPT connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IFGC or IPC. Shut off and depressurize the line before making or breaking any threaded connections. Apply listed thread sealant or PTFE tape approved for the service medium before assembly. Do not over-tighten threaded malleable iron fittings, as the material can crack under excessive torque.

Technical Specifications

• Figure Number: FIG 3103
• Nominal Size: 1/2 inch
• End Style: MNPT x FNPT
• Pressure Class: 150 lb
• Material: Malleable Iron
• Finish: Black

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 810016212