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The AQUALINE GPN-125-18 is a Schedule 40 galvanized steel pipe nipple measuring 1.25 inches in diameter and 18 inches in length. Galvanized construction provides corrosion resistance suitable for water supply, gas distribution, and general plumbing applications. The hot-dip galvanizing process coats the steel to extend service life in both exposed and concealed installations. At 3.2 pounds, this nipple is a standard close-coupled fitting used by licensed plumbers, pipefitters, and mechanical contractors to connect threaded pipe assemblies in residential and light commercial systems.
This nipple is suited for residential and commercial plumbing, gas piping, and industrial supply line applications where a Schedule 40 galvanized steel fitting is specified. It is commonly installed between threaded valves, unions, and fittings in water distribution and natural gas or propane supply lines. The 18-inch length accommodates offsets and connections that shorter nipple lengths cannot span, making it a practical choice in rough-in and rework scenarios.
Designed as an OEM-style replacement and standard trade fitting compatible with 1.25-inch NPT threaded plumbing and gas piping systems using Schedule 40 galvanized steel pipe components.
Installation should be performed by a licensed plumber or pipefitter in accordance with the International Plumbing Code or International Fuel Gas Code as applicable. Shut off the water or gas supply and depressurize the line before beginning work. Apply an approved thread sealant or PTFE tape to all male threads before assembly. Do not over-tighten threaded connections, as this can crack fittings or damage threads.
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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