Hayward Drain Cap with Gasket and Screen | SX180LA TurboClean The 1-Hole Pop-Ups have a

The 1-Hole Pop-Ups have a 3/8" orifice to provide a steady flow of water and maintain chemical balance

This part is white with an opening in its center for the hose assembly which connects to the filtration system via the vac lock which is a wall fitting that connects to the suction line on the pool wall surface giving the cleaner its power to suck and pull the dirt and debris littered along the pool's surface

Supersedes 535321 and 535339

This product works best when added directly to the pool water by pouring it around the entire outside perimeter of the pool

Hayward Drain Cap with Gasket and Screen | SX180LA TurboClean The 1-Hole Pop-Ups have aHayward Drain Cap with Gasket and Screen Hayward drain cap with gasket and screen is used on Hayward sand filters after 2005.