NEW inline Single Chamber Diaphragm Pump for use in shower tray, sink drain and bilge applications. The filter-less design means never having to change or clean a pre-filter. Self-priming to 6ft (1.8m) allows the unit to be mounted safely away from any potential wet spots. By positioning the motor in-line with the ports, the pumps compact design, coupled with the multi-positional head, makes installation both flexible and simple.