Honda WB20 Volume PumpModel# WB20XT4DRXU Portable 2" volume pump Maximum total head 32m Maximum suction head 7. 5m Delivers 620L min capacity A premium Volume Water Pump, the WB20XT has been designed with the end user in mind, for whatever application you want to use it in. With oil alert and rubber mounts, the full frame type provides stability and delivers smooth running with less vibration. The result is a reliable, long lasting pump that will perform day in, day out.