Msi Products Inc A203086424 Reducing Coupling 4x1.5 in 150LB

Product Description

The MSI PRODUCTS INC A203086424 is a 150 LB black malleable iron reducing coupling designed to connect two sections of threaded pipe with different diameters. It transitions from a 4-inch pipe to a 1-1/2-inch pipe using standard NPT threads, making it a straightforward solution for adapting existing piping lines without extra fittings. Constructed in a heavy-pattern design, it conforms to ASME B16.3 dimensional standards, ASTM A197 material specifications, and ASME B1.20.1 threading standards. Rated for 150 to 300 psi, this coupling suits everyday plumbing, gas, and mechanical piping applications. Full lot traceability is available with material test reports on request.

This reducing coupling is used in residential and light commercial piping systems where a size reduction between threaded pipe runs is required. Common applications include water distribution, steam, gas, and compressed-air lines. The black malleable iron finish indicates it is suitable for gas piping as well as general-purpose mechanical systems. Plumbers, pipefitters, and mechanical contractors install this fitting during new construction and retrofit work where pipe diameter changes are necessary along a run.

Key Features

• Reduces from 4 inches to 1-1/2 inches in a single fitting
• Rated 150 to 300 psi for use in demanding piping systems
• Conforms to ASME B16.3 dimensions and ASME B1.20.1 NPT threading standards
• Material meets ASTM A197 malleable iron specifications
• Heavy-pattern design for added strength and long-term durability
• Full lot traceability with material test reports available for compliance support
• Manufactured in an ISO-certified facility with tested performance and consistency

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 4-inch to 1-1/2-inch NPT threaded pipe systems in plumbing, gas, and mechanical piping applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes including the International Plumbing Code (IPC) and International Fuel Gas Code (IFGC) where applicable. Shut off and depressurize the pipe system completely before removing or installing any threaded fittings. Apply an appropriate pipe thread sealant or PTFE tape to the male threads before assembly. Do not over-tighten, as malleable iron fittings can crack under excessive torque.