Anvil 0320201775 Black Steel Coupling 3/8 in Class 300

Product Description

The ANVIL 0320201775 is a black-finish steel threaded coupling designed for joining pipe sections in piping systems that handle liquid or gas service. Rated at Class 300 with a pressure rating of 300 psi, this fitting is built for demanding applications where reliable, leak-free connections are required. The 3/8-inch size suits smaller-diameter runs commonly found in gas distribution, hydraulic lines, and industrial process piping. Licensed plumbers, pipefitters, and mechanical contractors are the typical installers for this type of fitting.

This coupling is suited for residential and light commercial piping installations where threaded steel fittings are specified. It is commonly used in natural gas distribution lines, compressed air systems, and general-purpose liquid piping. The black finish is standard for gas service piping and provides corrosion resistance appropriate for interior mechanical applications. The 3/8-inch threaded end connections allow it to mate with standard NPT pipe threads of the same size.

Key Features

• Class 300 rating with 300 psi liquid and gas pressure capacity
• 3/8-inch threaded end connections for standard NPT pipe compatibility
• Black finish — standard for gas service piping applications
• Steel construction for durability in high-pressure service
• Compact form factor suited for tight mechanical spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3/8-inch NPT threaded steel pipe systems rated at Class 300 service.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) where required. Shut off all gas or fluid supply and relieve system pressure before disassembling existing connections or installing new fittings. Apply an appropriate thread sealant or PTFE tape rated for the service medium before making up threaded joints. Pressure-test the completed assembly per code requirements before returning the system to service.