Sigma 810008607 90 Deg Reducing Elbow 1x1/2 in Fnpt 150lb

Product Description

The SIGMA 810008607 is a 90-degree reducing pipe elbow rated at 150 lb, designed to redirect and reduce pipe flow in low-pressure threaded piping systems. Manufactured from malleable iron with a black oxide finish, this fitting transitions a 1-inch nominal line down to a 1/2-inch nominal line using female NPT (FNPT) threads on both ends. The FIG 3101R configuration is a standard reducing elbow form factor widely used in plumbing, HVAC hydronic piping, and general mechanical systems. Licensed plumbers and pipefitters install this fitting where a direction change and pipe size reduction are needed at a single connection point.

This reducing elbow is suited for residential and light commercial piping installations involving threaded black iron pipe. Common applications include hydronic heating distribution, gas distribution piping, compressed air lines, and general-purpose plumbing where a 90-degree turn with a size step-down is required. The FNPT end style accepts standard NPT-threaded pipe on both the 1-inch and 1/2-inch sides, making it compatible with widely available threaded pipe and fittings stock.

Key Features

• 90-degree elbow with integral reducing geometry — eliminates need for a separate reducer fitting
• 150 lb pressure-rated malleable iron construction for durability in mechanical piping systems
• FNPT threads on both ends for standard NPT pipe compatibility
• Black oxide finish provides corrosion resistance suitable for interior mechanical applications
• 1-inch x 1/2-inch nominal sizing handles common branch and drop-down transitions

Compatibility

Designed as an OEM-style threaded fitting replacement for 150 lb malleable iron black pipe systems using 1-inch x 1/2-inch nominal NPT connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local mechanical and plumbing codes. Apply an appropriate pipe thread sealant or PTFE tape to male NPT threads before assembly. Do not overtighten threaded connections, as malleable iron fittings can crack under excessive torque. Shut off and depressurize the piping system fully before removing or installing any threaded fittings.

Technical Specifications

• Fitting Type: 90 Degree Reducing Elbow
• Figure Number: FIG 3101R
• Nominal Size: 1 x 1/2 inches
• End Style: FNPT (Female National Pipe Thread)
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Black Oxide

Standard Information

• Brand: SIGMA
• Manufacturer Part Number: 810008607