Waterway Hi-Flo Pump Twist-Lock for Above Ground Pools (1 Horsepower) The Hi-Flo II Above Ground PH1100-H3 pump was designed for superior and efficient performance. The Hi-Flo II pump features high flow rate performance for faster filtering cycles. This pump is ideal for new installations or as a replacement pump. 3' Twist-Lock Cord Wet end can be rotated for easy installation