WA-HQ400, Walrus HQ series 1/2 HP Electronic Pump | HQ400 Walrus America has designed the HQ series pumps are designed for water supply and pressure boosting in residential, commercial and light industrial applications. It is suitable for boosting pressure from underground or surface water supplies. These pumps are designed for use with potable, clean non-potable water, or other non-corrosive liquids. The HQ pumps are a complete, all in one unit with a pump, motor, pressure tank, and electronic controller included. This pump is rated at 1/2 horsepower and has a 1" NPT inlet and 1" NPT outlet. HQ series pumps are drip-proof and thermally protected for safe operation.