pressure washer pump automatic suntion it can be still running for 30 minutes when sprayer gun turned off

pressure washer pump

Model	3WZ-3600B	3WZ-2900B	3WZ-2500B
AG-1018
Max.Pressure(/PSIbar)	3600PSI/250	2900PSI/200	2500PSI/170
Flow(GPM/L/min)	15L/MIN 4GPM(U.S.)	15L/MIN 4GPM(U.S.)	15L/MIN 4GPM(U.S.)
Power	13HP	9HP	178F
CRANK BORE	25.4mm	25.4mm	25.4mm
Rpm	3400	3400	3400
Dimension(cm)	30*26*19	30*26*19	30*26*19
G.W.	9KGS	9KGS	9KGS

pressure washer pump