Short, Swirling-type filter pumps offer excellent performance for vacuum filtrations under both high and low water pressure conditions. The pumps feature a ball-type, positive-action valve in the suction tube which prevents water backflow if the pressure is reduced. Plated; with serrated tail and side arm. Water inlet is 3/8" NPT tapered. Total length 3" (76mm), Shipping Weight: 3 lbs. (1.4 kg).