Mattress water pump 1)long life span,easy operation,low consumption, multiple applications ... Max:5m lift, 8.5L/Min 38-18 DC water pump for water bed /mattressFeature:1. Life: Expected life span ... noise: 40dB, far from 10cm distance.3. Duty work: The pump can sustain heavy duty work for a day. Continuous operation ... -1860*56*691911 38-18 Brushless dc hot water circulaltion pump for water bed/mattress