

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The AQUALINE GPN-20-40 is a Schedule 40 galvanized steel pipe nipple sized at 2 inches by 4 inches. Pipe nipples are short threaded pipe sections used to connect two female-threaded fittings or valves in a piping run. The galvanized coating provides corrosion resistance in wet and moderately corrosive environments. This nipple is commonly installed by licensed plumbers and pipefitters working on water supply, industrial piping, and general trade plumbing systems where a steel nipple with NPT threads is required.
This nipple fits into residential and light commercial plumbing applications where Schedule 40 galvanized steel pipe and fittings are specified. Typical uses include water distribution lines, irrigation supply headers, and mechanical room piping. Its 2-inch diameter makes it suitable for moderate-flow domestic and process water systems. Installers working on pool and spa plumbing supply lines also use galvanized steel nipples of this type where non-PVC metallic pipe connections are appropriate.
Designed as a standard OEM-style replacement or new-installation nipple for Schedule 40 galvanized steel piping systems using 2-inch NPT-threaded fittings and valves.
Installation is typically performed by a licensed plumber or pipefitter. Shut off and depressurize the water supply line before removing any existing fittings or nipples. Apply an approved thread sealant tape or pipe compound to the male NPT threads before assembly. Follow applicable IPC and local plumbing code requirements for pipe support spacing and joint inspection on galvanized steel piping systems.
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.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!