Plumbing
Tying the whole system together, various pipes are used to circulate water in and out of your pool and through your pool’s support equipment. Most in-ground pools use 1½” PVC pipe. It’s important to maintain adequate flow through your system by using the proper diameter piping, valves and fittings.

Drains
During normal operation, in addition to the skimmers, water flows to your pool’s support equipment through one or more main drains at the bottom of the pool. In a large pool there should be multiple main drains and skimmers so if one becomes blocked or plugged, water can still be pulled through the other drains.

Returns
The return pipes move the filtered water from your support equipment back into your pool through return ports, or inlet valves around the sides of the pool. Return jets should be properly positioned to establish an overall circulation pattern in the pool to minimize dead spots.

Filters		Accessory Equipment