Blue Wave NE6155 SandPro 50D Filter and 1/2 HP Pump Powerful 1/2 HP self-priming pump with high efficiency impeller for maximum water flow and minimal noise; 40 GPM flow rate Easy to operate 4-position rotary valve - filter, backwash, rinse and winterize Designed for above ground pools up to 15,000-gal Easy to read pressure gauge and large capacity easy-to-clean hair and debris strainer basket with see-through lid Adapters included for Intex pools, 32 mm, 40 mm, 1-1/4-in and 1-1/2-in hose fittings