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The VALUE COLLECTION 4SPU11/2 is a 1-1/2 inch threaded pipe coupling machined from 304 stainless steel. It connects two sections of same-diameter pipe using female NPT threads on both ends, making it a standard FNPT x FNPT union in Schedule 40 piping systems. Rated to 150 psi, this coupling is suited for moderate-pressure liquid and gas service lines where corrosion resistance is required. Plumbers, pipefitters, and mechanical contractors install this type of fitting in both new construction and repair applications where a reliable, leak-free threaded joint is needed.
This coupling is used in residential and light commercial plumbing, process piping, and HVAC hydronic systems where 304 stainless steel construction provides adequate resistance to corrosion and oxidation. The FNPT x FNPT threading pattern conforms to standard tapered pipe thread specifications, allowing it to mate with any NPT-compliant male-threaded pipe or fitting in a 1-1/2 inch Schedule 40 configuration. It is appropriate for water, air, and compatible fluid service within its rated pressure limits.
Designed as an OEM-style replacement or new-installation fitting for 1-1/2 inch Schedule 40 threaded piping systems using NPT-standard connections.
Installation is performed by a licensed plumber or pipefitter. Shut off and depressurize the line before disassembly or fitting installation. Apply an appropriate thread sealant or PTFE tape to the male NPT threads before make-up to ensure a leak-free joint. Follow local plumbing code and IPC requirements for thread engagement and system pressure testing after installation.
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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