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The AQUALINE GPN-150-18 is a Schedule 40 galvanized steel pipe nipple sized at 1.5 inches nominal diameter by 18 inches in length. It is used to connect threaded pipe fittings in water supply, gas distribution, and industrial piping systems. The hot-dip galvanized coating provides corrosion resistance in wet and exposed environments. Plumbers and pipefitters install this nipple where a fixed-length threaded extension is needed between two fittings or between a fitting and a valve. At 3.8 pounds, it offers the structural integrity expected of Schedule 40 wall thickness for demanding service conditions.
This nipple is suited for residential and commercial plumbing, fire protection, and mechanical piping applications. It is commonly installed in supply lines, boiler rooms, utility spaces, and outdoor exposed piping where corrosion resistance is a priority. The 18-inch length makes it appropriate for longer-run connections between threaded components without requiring additional couplings.
Designed as an OEM-style replacement and standard-use threaded nipple compatible with Schedule 40 NPT threaded fittings, couplings, valves, and flanges in 1.5-inch nominal pipe size systems.
Installation is performed by licensed plumbers or pipefitters following applicable local plumbing codes and IFGC requirements for gas service applications. Shut off water or gas supply and depressurize the line before removal or installation of any threaded nipple. Use appropriate pipe thread sealant or PTFE tape on NPT threads to ensure a leak-free connection. Do not over-torque 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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