Value Collection MDB240 25X20-5 Reducing Coupling 5-pack

Product Description

The VALUE COLLECTION MDB240 25X20-5 is a black malleable iron reducing coupling designed for threaded pipe systems in plumbing, gas distribution, and mechanical piping applications. This fitting transitions a 1-inch pipe connection down to a 3/4-inch connection using tapered threads that conform to GB/T 7306.2 and ISO 7/1 standards. The Class 150 pressure rating makes it suitable for low- and medium-pressure service lines. Each package contains 5 couplings. Licensed plumbers and pipefitters are the primary installers for this type of fitting in both new construction and retrofit work.

This reducing coupling is used in residential and light commercial piping systems where a pipe diameter reduction is needed in a straight run. Typical applications include natural gas supply lines, water distribution, steam, and air piping within Class 150 service parameters. The threaded connection style allows installation without welding or soldering, making field assembly straightforward. The black finish is standard for gas-service malleable iron fittings and is widely specified in mechanical rooms, utility spaces, and exposed pipe runs.

Key Features

• Reduces from 1-inch to 3/4-inch in a single threaded fitting
• Malleable iron construction provides strength and thread integrity under pressure cycling
• Black finish — standard for gas-service piping installations
• Threaded connection type — no welding or soldering required
• Class 150 pressure rating — suitable for low- to medium-pressure systems
• Conforms to GB/T 7306.2 and ISO 7/1 threading standards
• Sold in a 5-pack for job-site efficiency

Compatibility

Designed as an OEM-style replacement or new-installation fitting for threaded malleable iron pipe systems rated at Class 150, using 1-inch to 3/4-inch pipe connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local mechanical codes and IFGC requirements for gas-service piping. Shut off all gas or water supply and depressurize the line before removing or installing any threaded fittings. Apply appropriate thread sealant or PTFE tape to male threads before assembly. Do not over-torque threaded malleable iron fittings, as this can crack the fitting body or damage thread engagement.