Pentair Automatic Water Filler with Side Mounted Float Valve Replacement Pool Part T40 BBE Pentair Automatic Water Filler with Side Mounted Float Valve (Almond) (T40 BBE) This auto water filler was designed to be installed for standard inground and vanishing edge pools. This product was made to prevent equipment damage due to low water levels while also preventing water waste and landscape damage should your pool ever overfill. The auto filler protects your investment by using simple, reliable float mechanisms to monitor and control the water level in your pool or spa. If your water drops below a preset level, the unit meters in additional water until the proper level is restored. If the water levels are too high, the built-in overflow will take the right amount of water out of the system. Features Tough, corrosion and chemical resistant ABS polymer construction for years of trouble free service. Prevents low water levels that can damage equipment Eliminates water waste and landscape damage that can result from overfilling the pool. The compact seven inch diameter design makes it easy to incorporate into new designs or renovations in both standard inground and vanishing edge pools.