HY-AIR Our HY-AIR is a 4-stage pump designed to reduce cycle time and improve productivity. A compact design with an optional one or two-gallon reservoir alleviates weight restrictions and offers the operator efficient mobility. Simple controls make for short set-up times and the semi-automatic feature allows the operator to experience faster and easier bolting. PUMP SPECIFICATIONS AND FEATURES Reservoir Capacity 1.35 gals. / 5.1 l (2 gals. / 7.6 l tank optional for the HY-115) Protective Caging