Par Max HD Pressure Controlled Pump 4 GPM

Efficient, high-flow, self-priming pump serving 4 or more outlets
Multi-diaphragm design self primes to 1.5m vertical lift, can run dry without damage
Supplied with snap-in ports for hose 1/2" (13mm) and Strainer
Motor protected by automatic thermal overload cut-out Heavy duty (HD) models feature motors and cast aluminum lower housings for longer life even at high pressures.
Flow Rate :   4 GPM (15 LPM).
Voltage :  12 VDC.
Fuse Size : 15(amp).
Output : 15 litres/minute (4 gallons/minute) open flow.
Connections:  for 13mm (½”) bore hose
Pressure Switch :  cuts in at 1.4bar (20psi) - cuts out at 2.8bar (40psi).
Dimensions : 239mm long x 109mm wide x 97mm high.