Sigma 810008409 90 Degree Reducing Elbow 1x3/4 in Fnpt 150lb

Product Description

The SIGMA 810008409 is a FIG 3101R 90-degree reducing pipe elbow rated at 150 lb, manufactured from malleable iron with a black oxide finish. It transitions from a 1-inch nominal female NPT inlet to a 3/4-inch nominal female NPT outlet, making it a practical directional fitting for low-pressure piping systems. The FNPT end style on both ports allows for a standard threaded connection without additional adapters. Licensed plumbers and pipefitters install this fitting in gas distribution, steam, and water piping assemblies where a 90-degree direction change and a one-size reduction are needed in a single component.

This reducing elbow is suited for residential and light commercial piping applications involving black iron gas lines, low-pressure steam systems, and general water service piping. Its 150-lb pressure class rating and malleable iron construction make it appropriate for standard service conditions within that pressure range. The black oxide finish is typical for black iron gas piping installations and is not intended as corrosion protection for wet or outdoor environments without additional treatment.

Key Features

• 90-degree elbow with simultaneous one-size pipe reduction in a single fitting
• 1 inch x 3/4 inch nominal FNPT end style on both ports
• 150 lb pressure class malleable iron construction
• Black oxide finish compatible with standard black iron gas piping systems
• FIG 3101R pattern for broad interchangeability with standard threaded fittings

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 150 lb class malleable iron threaded piping systems using 1-inch and 3/4-inch nominal NPT pipe.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Fuel Gas Code (IFGC), or the International Plumbing Code (IPC) depending on the service. Shut off and depressurize the piping system completely before beginning any fitting work. Use appropriate thread sealant or PTFE tape rated for the intended service medium. Do not over-torque threaded connections on malleable iron fittings, as the material can crack under excessive stress.

Technical Specifications

• Fitting Type: 90-Degree Reducing Elbow
• Nominal Size: 1 inch x 3/4 inch
• End Style: FNPT (Female National Pipe Taper) both ends
• Pressure Class: 150 lb
• Material: Malleable Iron
• Finish: Black Oxide
• Figure Number: FIG 3101R

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 810008409