Asc 321200339 Taper Tapped Galvanized Steel Coupling 4 in

Product Description

The ASC ENGINEERED SOLUTIONS 321200339 is a 4-inch taper tapped threaded galvanized steel coupling designed for mechanical piping systems. The taper tapped thread profile creates a self-tightening seal as the fitting is made up, reducing the need for supplemental thread sealants in many low-pressure applications. Galvanized steel construction provides corrosion resistance suitable for water service and general-purpose plumbing and mechanical piping. At 4.61 pounds, this is a full-sized heavy-duty coupling intended for commercial and industrial piping runs. Licensed plumbers and pipefitters are the primary installers of fittings in this size range.

This coupling is used in 4-inch threaded steel piping systems found in commercial plumbing, mechanical rooms, fire protection, and industrial process piping. The taper tapped configuration is a standard end-to-end coupling that joins two male-threaded pipe ends. It is commonly specified where a removable, threaded mechanical connection is required in steel piping. This size is typical in larger commercial and light industrial installations rather than residential service.

Key Features

• 4-inch fitting size for large-diameter threaded steel piping
• Taper tapped thread form creates a self-tightening, pressure-resistant joint
• Galvanized steel construction resists corrosion in water and general mechanical service
• Heavy-duty weight class at 4.61 pounds, suitable for commercial and industrial use
• Standard threaded coupling profile for straightforward inline pipe joining

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 4-inch threaded galvanized steel piping systems in commercial plumbing and mechanical applications.

Installation Notes

Installation of 4-inch threaded steel couplings should be performed by a licensed plumber or pipefitter in accordance with applicable IPC or local plumbing code requirements. Isolate and depressurize the piping system completely before removing or installing any threaded fittings. Apply an approved thread sealant compound or PTFE tape to male threads before makeup. Do not overtighten, as this can crack the fitting or distort threads.

Technical Specifications

• Fitting Size: 4 inches
• Type: Taper Tapped Threaded
• Material: Galvanized Steel
• Weight: 4.61 pounds

Standard Information

• Brand: ASC ENGINEERED SOLUTIONS
• Manufacturer Part Number: 321200339