Bk Mueller 520-132HN 90 Deg Reducing Elbow 1/2x3/8 Threaded

Product Description

The BK MUELLER 520-132HN is a black malleable iron 90 degree reducing elbow rated Class 150 for threaded pipe assemblies. It transitions from a 1/2 inch female iron pipe (FIP) inlet to a 3/8 inch FIP outlet, making a right-angle direction change while simultaneously reducing pipe size in a single fitting. The black finish is standard for gas distribution piping. With a pressure rating of 300 psi, this elbow handles typical residential and light commercial gas and liquid service demands. Plumbers and pipefitters install this fitting during rough-in and retrofit work where a directional change and size reduction are needed at the same location.

This fitting is suited for residential and light commercial installations involving natural gas, propane, air, and compatible liquid distribution systems. Common applications include gas appliance supply lines, compressed air distribution, and general plumbing rough-in where IFGC or IPC-governed threaded iron pipe assemblies are required. The 90 degree angle and reducing configuration make it particularly useful in tight mechanical rooms and utility chases where separate reducing and elbow fittings would consume too much space.

Key Features

• 90 degree reducing elbow transitions from 1/2 inch to 3/8 inch in a single fitting
• Malleable iron construction rated for 300 psi service pressure
• Female iron pipe (FIP) threaded connections on both ends
• Black finish standard for gas piping identification and corrosion resistance
• Class 150 classification suitable for typical residential and light commercial service

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Class 150 threaded malleable iron pipe systems using 1/2 inch and 3/8 inch FIP connections.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IFGC or IPC requirements for threaded iron pipe assemblies. Shut off and depressurize the supply line completely before removing or installing any fitting. Apply an approved pipe thread sealant or PTFE tape rated for the intended service medium to all male threads before assembly. Do not overtighten malleable iron fittings, as the material can crack under excessive torque.