

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The ASC ENGINEERED SOLUTIONS 318902483 is a cored square head plug designed for closing off threaded pipe ends in plumbing, HVAC, and industrial piping systems. Constructed from black steel, this 1-1/4 inch plug provides a secure, pressure-rated seal on male-threaded pipe terminals. The square head design allows for positive wrench engagement during installation and removal, reducing the risk of cam-out or slippage. At 0.41 pounds, the fitting is a standard-weight component suited for routine service work across a range of commercial and residential applications. Licensed plumbers, pipefitters, and mechanical contractors are the typical installers of this type of pipe fitting.
This square head plug is used in black steel piping systems commonly found in gas distribution, fire suppression, steam, and general-purpose fluid conveyance applications. The cored construction means the plug retains a hollow interior cavity, which is standard for threaded pipe plugs of this type and allows for future tap access if needed. It is appropriate for both new construction rough-in and retrofit service work where a 1-1/4 inch threaded port requires capping.
Designed as an OEM-style replacement or new-installation fitting for 1-1/4 inch threaded black steel pipe systems in plumbing, mechanical, and gas piping assemblies.
Installation of this fitting should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Plumbing Code, or the International Fuel Gas Code where relevant. Always depressurize and isolate the pipe section before removing or installing threaded plugs. Apply an appropriate thread sealant or PTFE tape to the male threads before installation. Do not overtighten, as this can crack fittings or damage threads in the mating pipe or fitting.
Thanks for subscribing!
This email has been registered!