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How to Install PVC Caps and Plugs

To install a PVC end cap, start by cleaning the pipe, ensuring that the end is free of debris. If you’re using a solvent-weld cap, apply PVC primer to the outside of the pipe and the inside of the cap to prepare the surfaces for bonding. After the primer dries, apply PVC cement to the same areas and quickly slide the cap over the end of the pipe. After that, just let the connection sit for a couple of hours before using the system. Installing a PVC plug is slightly easier, as all you’ll need to do is hand-tighten the plug into the female-threaded fitting. If the plug is not sealing properly, you can apply Teflon tape (plumber's tape) to the threads for extra leak prevention.

PVC Caps & Plugs FAQs

What is the difference between a PVC plug and a PVC cap?

The main difference between a PVC plug and a PVC cap is how they fit onto a pipe. PVC caps fit over the end of a pipe, covering it externally. PVC plugs are screwed inside a fitting with female threads, sealing the pipe internally.

What are PVC caps and plugs used for?

PVC caps and plugs are used to seal and protect the ends of pipes or fittings. PVC end caps and plugs can be used to temporarily or permanently seal a pipe when it is no longer in use. They also shield open pipe ends from dirt, dust, or damage. During maintenance, plugs and caps will help temporarily block flow while repairs are made.

Can PVC caps and plugs handle high pressure?

PVC caps and plugs can handle varying levels of pressure. Schedule 40 PVC caps and plugs are the most common and are suitable for low- to moderate-pressure systems like residential plumbing or irrigation. Schedule 80 caps and plugs are thicker and can handle higher pressures. They're often used in industrial applications where higher pressure is expected.

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