Aqualine GCAP-400 Threaded Galvanized Cap 4 Inches

Product Description

The AQUALINE GCAP-400 is a 4-inch threaded galvanized cap designed to close off the end of a threaded pipe. The galvanized steel construction provides corrosion resistance, making it suitable for use in plumbing, water supply, gas distribution, and general mechanical piping systems. This cap threads directly onto a male-threaded pipe end to provide a secure, leak-resistant seal. It is installed by licensed plumbers and pipefitters working on residential and light commercial piping systems.

The GCAP-400 is used wherever a 4-inch threaded pipe end requires capping during testing, temporary service interruption, or permanent system termination. Common applications include water supply lines, drain and waste systems, natural gas and propane distribution piping, and industrial process lines. Its galvanized finish makes it appropriate for both indoor and outdoor installations where moisture exposure is a concern.

Key Features

• 4-inch threaded connection for direct installation onto male-threaded pipe ends
• Galvanized steel construction resists corrosion and rust in wet environments
• Suitable for water supply, gas distribution, and general mechanical piping applications
• Threaded design provides a secure, leak-resistant seal without additional fittings
• Compatible with standard NPT threaded pipe systems

Compatibility

Designed as an OEM-style replacement and standard fitting for 4-inch threaded pipe systems in residential and commercial plumbing and mechanical applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off and depressurize the supply line before installing or removing any pipe cap. Apply thread sealant tape or pipe dope to the male threads before threading the cap on by hand, then tighten with a pipe wrench to ensure a leak-free connection. Do not overtighten, as this may damage the threads or fitting body.

Technical Specifications

• Size: 4 inches
• Connection Type: Threaded
• Material: Galvanized Steel
• Weight: 4 pounds

Standard Information

• Brand: AQUALINE
• Manufacturer Part Number: GCAP-400