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The MSI PRODUCTS INC A203080802 is a 150lb black malleable iron reducing coupling designed to connect two sections of threaded pipe with different diameters. The fitting transitions from a 1/2 inch female thread to a 1/8 inch female thread, providing a straightforward size reduction without additional adapters or fittings. Constructed in a heavy pattern design from malleable iron conforming to ASTM A197 material specifications, this coupling delivers the mechanical strength needed for daily service in gas, air, and liquid piping systems. It conforms to ASME B16.3 dimensional standards and ASME B1.20.1 threading standards for consistent fit. Licensed plumbers and pipefitters are the primary installers in both residential and light commercial applications.
This reducing coupling is suited for residential and light commercial piping installations where a threaded line must transition from 1/2 inch pipe to 1/8 inch pipe. Typical applications include natural gas distribution lines, compressed air systems, and general industrial or mechanical piping where a reliable threaded transition is required. The black iron finish indicates this fitting is intended for non-potable service such as gas and air lines. Each fitting ships as a single unit and carries full lot traceability with material test reports available upon request to support quality assurance and code compliance documentation.
Designed as a standard ASME B16.3 OEM-style replacement or new-installation fitting for threaded malleable iron piping systems requiring a 1/2 inch to 1/8 inch NPT reduction.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) where applicable. Shut off and depressurize the affected line completely before disassembling or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape rated for the intended service medium to all male threads before making up the joint. Do not use this black iron fitting in potable water service.
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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