Aqualine GPN-40-12 Sch 40 Galvanized Steel Pipe Nipple

Product Description

The AQUALINE GPN-40-12 is a Schedule 40 galvanized steel pipe nipple measuring 4 inches in diameter by 12 inches in length. Galvanized steel construction provides corrosion resistance suited for water supply, irrigation, and general piping applications where bare steel would deteriorate. The threaded ends accept standard NPT fittings for secure, leak-resistant connections. Plumbers and pipefitters install this nipple as a close-tolerance extension or transition fitting in both above-ground and certain below-ground piping assemblies. At 9.1 pounds, the GPN-40-12 is a heavy-duty fitting appropriate for commercial and residential mechanical systems.

This pipe nipple is used in water supply lines, fire protection systems, industrial piping, and general plumbing installations where a 4-inch Schedule 40 galvanized threaded connection is required. It is commonly installed in boiler rooms, mechanical rooms, and utility areas as a short run between valves, flanges, or other threaded fittings. Licensed plumbers and pipefitters typically handle 4-inch pipe in commercial and light industrial settings.

Key Features

• Schedule 40 wall thickness rated for standard service pressures in water and general piping systems
• Galvanized steel construction resists corrosion in wet and humid environments
• Both ends threaded to NPT standards for compatibility with standard pipe fittings and valves
• 4-inch nominal diameter suits larger-bore commercial and industrial piping runs
• 12-inch body length provides a practical extension between fittings without requiring a coupling

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 4-inch Schedule 40 threaded galvanized steel piping systems using standard NPT connections.

Installation Notes

Installation of 4-inch galvanized pipe nipples should be performed by a licensed plumber or pipefitter in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and depressurize the system completely before removing or installing any threaded pipe fittings. Apply an approved pipe thread sealant or PTFE tape to the male threads before makeup to ensure a leak-free joint. Use a properly sized pipe wrench and back-up wrench when tightening to avoid stressing adjacent fittings or valves.

Technical Specifications

• Nominal Pipe Size: 4 inches
• Length: 12 inches
• Schedule: Schedule 40
• Material: Galvanized Steel
• Thread Type: NPT
• Weight: 9.1 pounds
• UPC: 675135124008

Standard Information

• Brand: AQUALINE
• Manufacturer Part Number: GPN-40-12