APP BPS Submersible Pump | Automatic with Pendant Float Switch

BPS Automatic Submersible Pumps (BPS-80A, BPS-100A & BPS-400A) The APP BPS automatic pumps combine compact submersible pumping with reliable automatic control using a float switch. With a top discharge and water-cooled design, they are ideal for applications where space is limited and the pump may operate partially submerged. Why choose the BPS Automatic pumps Choose the BPS automatic models when you want hands-free pumping that starts and stops based on water level. Models with the “A” suffix use a float switch for fixed automatic operation. Pendant floats are best in wider, unobstructed chambers, while narrow or obstructed sumps may suit alternative float arrangements. If your sump is very narrow or your water levels are extremely shallow, the BPS-100EA is purpose-built for that scenario. Applications Suitable for: Automatic cellar and basement drainage Sumps and pits where unattended pumping is required Tanks and light drainage applications Trade and industrial clean-up requiring automatic level control Clean and slightly dirty water transfer Not recommended for ponds or water features. Construction and Build Quality BPS automatic pumps are built in durable thermoplastic with a top discharge configuration for restricted spaces. They use a carbon/ceramic mechanical seal in an oil chamber with an inner lip seal for wear resistance and protection during short periods of dry running. Shaft materials are model-specific: 304 stainless steel shafts on BPS-80 and BPS-100, and a 410 stainless steel shaft on the BPS-400. Key Features Automatic operation via float switch Top discharge, water-cooled design for limited-space installations Built-in overload protection that shuts down on overheating and restarts once cooled Anti-airlock device for increased reliability Designed for clean and slightly dirty water applications Float Switch Comparisons Below is a diagram comparing a manual BPS pump with automatic BPS pumps using both pendant and tube float switch designs: For automatic pumping in narrow sumps, the BPS‑100EA is recommended, as its compact float switch reduces the risk of obstruction. Pendant floats can become trapped in restricted chambers (as shown above). For more information on float switch types, see our Automatic Water Pump blog. Warranty All APP water pumps are supplied with a 2‑year manufacturer’s warranty. What’s in the Box ✅ 1 × APP BPS Automatic Water Pump ✅ 1 × 10m heavy‑duty rubber power cable ✅ 1 × Hose tail