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The AQUALINE GPN-40-80 is a Schedule 40 galvanized steel pipe nipple measuring 4 inches in diameter by 8 inches in length. It is designed for use in threaded pipe assemblies where corrosion resistance and pressure-rated strength are required. The hot-dip galvanized coating protects the steel substrate against rust and oxidation in wet or exposed environments. Plumbers and pipefitters install this nipple to connect threaded fittings, valves, or equipment in water supply, irrigation, and general industrial piping systems. At 5.88 pounds, the fitting offers substantial wall thickness consistent with Schedule 40 construction standards.
This nipple is suited for residential and light commercial plumbing applications including water distribution, fire protection rough-in, and mechanical room piping. It is also used in pool and spa equipment plumbing where threaded steel connections are specified. The 8-inch body length accommodates installations that require a short extension between two threaded components without field-cutting pipe.
Designed as an OEM-style replacement and standard-stock fitting compatible with 4-inch NPT threaded pipe systems using Schedule 40 galvanized steel components.
Installation is performed by licensed plumbers or pipefitters following applicable IPC and local plumbing code requirements. Shut off the water supply and depressurize the system before threading or unthreading any fittings. Apply thread sealant tape or pipe dope to the male threads before making up the connection. Do not over-torque threaded joints on galvanized steel fittings, as excessive force 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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