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The ASC ENGINEERED SOLUTIONS 320201098 is a 2.5-inch extra heavy black steel taper tapped coupling designed for high-pressure and high-demand piping applications. This fitting uses a tapered thread profile to create a tight mechanical seal when mated with corresponding threaded pipe ends. Extra heavy wall construction makes it suited for industrial, commercial, and heavy mechanical piping systems where standard-weight fittings are insufficient. Licensed plumbers and pipefitters install this type of coupling as part of threaded black steel pipe assemblies.
This coupling is used in black steel pipe systems found in commercial and industrial gas distribution, fire suppression, steam, and high-pressure fluid lines. The extra heavy designation indicates a wall thickness greater than standard or Schedule 40 fittings, making it appropriate for systems that operate under elevated pressures or require additional mechanical strength at the joint. It is a field-standard threaded coupling for trade professionals working with NPT-compatible black steel pipe.
Designed as an OEM-style replacement or direct-install fitting for 2.5-inch extra heavy black steel threaded pipe systems using standard NPT tapered threads.
Installation of threaded black steel pipe fittings should be performed by a licensed plumber or pipefitter in accordance with applicable codes, including the International Fuel Gas Code or International Plumbing Code where relevant. Shut off and depressurize the pipe system completely before removing or installing any fittings. Apply an appropriate thread sealant or PTFE tape rated for the service fluid before making up the joint. Do not over-tighten, as this can crack or distort the fitting threads.
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