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The AQUALINE GPN-125-40 is a Schedule 40 galvanized steel pipe nipple used in threaded piping systems across plumbing, HVAC, gas, and general industrial applications. Measuring 1.25 inches in diameter and 4 inches in length, this nipple connects threaded pipe sections, fittings, and valves. The hot-dip galvanized coating provides corrosion resistance in wet and outdoor environments. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work where a short, rigid threaded connector is needed between components.
This nipple is suited for residential and light commercial piping installations. It is commonly used in water supply lines, gas distribution piping, fire protection systems, and mechanical room applications where Schedule 40 wall thickness and threaded ends are required. The 1.25-inch nominal size is a standard dimension found in many distribution and branch-line configurations.
Designed as an OEM-style replacement and standard-use fitting compatible with 1.25-inch NPT threaded pipe, fittings, and valves in Schedule 40 piping systems.
Installation is performed by licensed plumbers or pipefitters in accordance with the International Plumbing Code or applicable local codes. Shut off the water or gas supply and relieve system pressure before removing or installing any threaded fitting. Apply an approved thread sealant or PTFE tape to the male threads before making up the joint. Do not overtighten, as excessive torque can crack fittings or distort 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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