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The AQUALINE GPN-125-12 is a Schedule 40 galvanized steel pipe nipple sized at 1.25 inches nominal diameter by 12 inches in length. Hot-dip or mill galvanization provides a zinc coating that resists corrosion in wet and exposed environments. This nipple is a short threaded connector used to join pipe sections, valves, fittings, or equipment in water, gas, and general plumbing distribution systems. Plumbers, pipefitters, and mechanical contractors install these as part of rough-in and retrofit work wherever a threaded steel connection is required. The Schedule 40 wall thickness meets standard pressure ratings for typical residential and light commercial service lines.
This nipple is suited for residential and commercial plumbing, hydronic heating, irrigation supply lines, and pool or spa equipment connections. It performs in potable water, non-potable water, and low-pressure gas applications where threaded steel pipe is specified. The galvanized finish makes it appropriate for outdoor, underground-adjacent, or high-moisture installations where bare steel would corrode prematurely. It is commonly used in mechanical rooms, boiler rooms, and utility service connections.
Designed as a standard-thread replacement nipple for Schedule 40 galvanized steel pipe systems using 1.25-inch NPT fittings and connections.
Installation is performed by licensed plumbers or pipefitters in accordance with the International Plumbing Code or applicable local codes. Apply thread sealant tape or pipe dope rated for the intended service medium before threading the nipple into fittings. Use a pipe wrench and a backup wrench when tightening to avoid stressing adjacent piping. Shut off and depressurize the system fully before removing or installing any threaded connection.
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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