How to Identify Swimming Pool Valves

Look for valves that resemble PVC piping with an opening on each end and a third opening on top. These are combination valves, otherwise known as "jandy valves." They have a selector switch on the side that helps you control water flow. Combination valves tend to be more expensive than other valves, but they require minimal maintenance.

Examine the settings on the valve. Multiport valves typically have six settings that read "filter," "rinse," "recirculate," "backwash," "closed" and "waste" or "drain." The ports are on the bottom of the valve, while the selector switch is on the top. A push/pull valve only has two settings, "filter" and "backwash," and are longer than multiport valves.

Check inside the valve body if it isn't connected. Ball valves have a ball bearing in the middle that helps regulate water. Ball valves are smaller and have a large switch on the top to open and close them.

Search for valves with a twisting disc handle like what's found on an outside faucet. These are gate valves, and they tend to be taller and thinner than other varieties.