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The WAL-RICH 0090-0005-220 is a Dresser Style 90 Insulated Coupling with a 1/8 inches tap, designed for joining pipe sections in gas distribution and utility piping systems. This coupling provides a reliable mechanical connection while also serving as an electrical isolation point between pipe segments. That isolation function is critical in cathodic protection systems, where preventing stray electrical current from traveling between pipe sections helps protect buried metal pipe from corrosion. HVAC technicians, gas fitters, plumbers, and utility contractors rely on couplings like this one when working on gas mains, service lines, and distribution piping where both mechanical integrity and electrical insulation are required. The 0090-0005-220 measures 5 inches in overall length and weighs 3.77 pounds, making it a solid, heavy-duty fitting suited for demanding field conditions. The body is constructed from carbon steel for strength and durability under pressure and temperature cycling. An E-Coat finish is applied to the exterior, providing corrosion resistance that extends the service life of the coupling in buried or exposed environments. The internal components include a sleeve, an armored Grade 27 gasket, an insulating boot, and a spacer. The armored gasket provides a tight, leak-resistant seal around the pipe. The insulating boot electrically isolates the two pipe ends from each other, preventing galvanic current flow across the joint. The spacer maintains proper alignment and spacing between pipe ends during installation. The 1/8 inches tap on the coupling body allows for connection of a pressure test port, bonding wire access, or instrumentation, depending on the application. The maximum rated operating temperature for this coupling is 150 degrees F. This fitting is commonly used by gas utility crews, pipeline contractors, and service plumbers working on natural gas and propane distribution systems where cathodic protection and mechanical pipe joining are both needed at the same connection point.
The WAL-RICH 0090-0005-220 Dresser Style 90 Insulated Coupling delivers mechanical pipe joining and electrical isolation in a single fitting, making it a standard choice for gas distribution and cathodic protection applications. Its carbon steel construction and E-Coat finish support long service life in demanding field environments.
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