Value Collection 737005G Malleable Iron Coupling 1-1/4 in Class 300

Product Description

The VALUE COLLECTION 737005G is a 1-1/4-inch black malleable iron threaded coupling rated for Class 300 service. It connects two sections of pipe with matching female-threaded ends and is built to handle liquid and gas systems operating at up to 1500 psi. The black finish is applied after fabrication and is standard for gas distribution and industrial piping work. Malleable iron construction provides the toughness and thread integrity required for high-pressure service in demanding trade environments. This coupling is a routine component installed by licensed plumbers, pipefitters, and gas service technicians.

This coupling is suited for use in commercial and industrial piping systems where Class 300 malleable iron fittings are specified. Typical applications include compressed air lines, natural gas distribution, steam, and hydraulic service piping. The threaded end connections accept standard NPT pipe, making it compatible with conventional black iron pipe assemblies. It is commonly used in mechanical rooms, industrial facilities, and commercial HVAC-adjacent gas piping runs where pressure demands exceed standard Class 150 fitting ratings.

Key Features

• 1-1/4-inch fitting size with female-threaded end connections on both ends
• Class 300 malleable iron construction rated to 1500 psi for liquid and gas service
• Black finish standard for gas and industrial piping applications
• Malleable iron material provides strength and resistance to impact in service conditions
• UNSPSC Code: 40175303 for procurement and sourcing compatibility

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Class 300 black iron threaded pipe systems using 1-1/4-inch nominal pipe size.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable codes such as the International Fuel Gas Code or ASME B31 piping standards. Shut off gas or fluid supply and depressurize the line completely before disassembly or fitting installation. Apply appropriate thread sealant or PTFE tape rated for the service medium before tightening. Do not over-torque threaded connections, and always pressure-test the assembly before returning the system to service.