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The VALUE COLLECTION 4SPU3 is a stainless steel pipe coupling with NPT (National Pipe Taper) threaded end connections. Couplings of this type join two sections of pipe along the same axis and are used to extend a run or repair a line. The stainless steel construction resists corrosion in wet, chemical-exposed, and outdoor environments. NPT threads form a pressure-tight seal when properly taped or compounded. This fitting weighs 2.01 pounds and measures approximately 4 inches in height and 3.18 inches in width, making it suited for medium- to larger-diameter pipe work. Licensed plumbers and pipefitters are the primary installers.
This coupling is appropriate for use in residential and commercial plumbing, process piping, and mechanical systems where corrosion resistance and reliable threaded connections are required. Typical applications include water supply lines, compressed air distribution, and fluid transfer systems that call for stainless steel fittings. The NPT thread standard is common across North American plumbing and industrial piping, making this fitting widely applicable in both new construction and retrofit work.
Designed as an OEM-style replacement or direct-install stainless steel NPT coupling for plumbing and industrial piping systems that use standard National Pipe Taper threaded connections.
Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable IPC or local plumbing codes. Shut off and depressurize the line before beginning work. Apply PTFE tape or a listed pipe thread compound to all NPT threads before making up the joint to ensure a leak-free seal. Do not overtighten threaded stainless fittings, as galling of the threads can occur.
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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