Upgrade your plumbing and HVAC systems with this high-quality 4 inch Copper Cap Fitting, designed for durability and reliable performance. Constructed from Wrot Copper, this cap features a 4 inch connection size and a precise 4-1/8 inch tube outside diameter (OD) for a secure and accurate fit.

The fitting uses a Cup connection type, making it ideal for soldering into place in copper piping systems. Rated for up to 700 PSI, this cap fitting is engineered to withstand high-pressure environments, making it suitable for both residential and commercial applications.

Whether you're sealing off a copper pipe or creating a secure endpoint in a pressurized system, this copper cap fitting delivers excellent corrosion resistance and long-lasting performance.