Swimming Pool Parts & Supplies for Inground & Above-Ground Pools

Maintain and upgrade your pool with pool parts and supplies from Filbur, Purex, Technical Products, and LX. PST Pool Supplies stocks a curated range of pool maintenance supplies — filter cartridges in multiple sizes, DE filter grids, winter plugs, and energy-efficient 2-speed pumps — for both inground and above-ground pools, starting from just $10.

Filbur filter cartridges are available in multiple formats and sizes (75–137 sq ft, with 4-pack bundles for multi-cartridge filter systems) — Filbur is a leading aftermarket cartridge manufacturer producing direct replacements for Pentair, Hayward, Sta-Rite, and Waterway cartridge filter systems. Replacing filter cartridges at the manufacturer's recommended interval (typically annually for residential pools) restores filtration efficiency and prevents channeling that occurs when old cartridge pleats collapse. The Purex DE filter grid (24 sq ft replacement section) restores filtration capacity to Purex/Pentair DE filter systems — replace grids when the fabric tears or when the filter can no longer maintain pressure between backwash cycles. The #12 winter plug for 2" fittings is the standard threaded rubber plug used to seal return jets, main drain fittings, and skimmer outlets during pool winterization — sealing these ports after blowing out the lines prevents debris entry and protects plumbing against freeze damage. The LX 48WUA 1.5 HP 2-speed pump is an energy-efficient pool pump operating on both high-speed (for vacuuming and backwashing) and low-speed (for routine filtration) — the low-speed mode consumes approximately 75% less electricity than single-speed operation, qualifying it for utility rebate programs in many areas. For additional filter and plumbing parts, browse our pool plumbing parts and pool filters collections.

Filter cartridge maintenance is one of the most impactful pool maintenance tasks: a clogged or degraded cartridge dramatically increases pump energy consumption as the pump works against elevated back-pressure, while delivering poorer filtration. Clean cartridges with a dedicated cartridge cleaner spray (not a pressure washer, which damages the pleated fabric) every 30–60 days during the swim season, and replace annually or when pleats are torn, collapsed, or discolored with mineral staining that cannot be removed. For DE grid maintenance, brush lightly during backwashing and perform a full grid cleaning with acid wash at the start of each season. 2-speed pumps like the LX 48WUA are particularly valuable in jurisdictions with time-of-use electricity pricing — run low-speed filtration during off-peak hours to minimize energy costs while meeting minimum daily turnover requirements.

Shop pool parts and supplies at PST Pool Supplies and keep your pool running efficiently all season long.