Pentair is a global leader in the pool industry and has built a reputation of high performing, reliable and energy efficient products that pool owners can depend upon. Pentair’s high efficiency filters are no exception and will keep your pool water clean, clear and inviting all year round. If you need a replacement part for your Pentair filter, PoolSupplyWorld is here to help you find the exactly what you need. Whether you have a sand, cartridge or D.E. filter, we carry several parts including retainer rings, union nuts, outlet connectors, check valve kits, t-nuts and more.