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The VALUE COLLECTION 420S03 is a Class 150 galvanized steel pipe coupling designed to join two sections of threaded pipe in liquid, gas, and steam service lines. It features NPS (National Pipe Straight) threading on both ends, a 300 psi pressure rating for liquid and gas applications, and a 150 psi rating for steam. Weighing approximately 0.1 pounds, this compact fitting suits residential and light commercial plumbing, gas distribution, and steam piping systems where a reliable, code-compliant mechanical connection is required. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers of this type of fitting.
This coupling is suited for 3/8 inch threaded pipe runs in residential and commercial settings. Typical applications include potable water distribution, hydronic heating supply and return lines, low-pressure steam systems, and compressed-air or fuel-gas branch lines operating within the rated pressure limits. The galvanized finish provides corrosion resistance for both interior and exposed installations. The fitting meets ASTM standards, making it appropriate for use in jurisdictions that reference those material specifications in their adopted plumbing or mechanical codes.
Designed as an OEM-style replacement or new-installation fitting for 3/8 inch NPS threaded pipe systems in liquid, gas, and low-pressure steam service.
Installation should be performed by a licensed plumber or pipefitter in accordance with the applicable edition of the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC). Shut off and depressurize the supply line fully before disassembling any existing piping or making up new connections. Apply a listed thread sealant or PTFE tape to male threads per the sealant manufacturer directions before assembly. Do not exceed the rated pressure limits for the intended service medium.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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