Jabsco Par-Max HD4 Heavy Duty Water Pressure Pump - 24V - 4 GPM - 40 PSI

Comprata in sostituzione della mia precedente pompa ma….smontata immediatamente e lasciata come pompa di emergenza. Ho preferito riparare la vecchia xke molto molto più silenziosa. Tra l’altro questa aveva un portata leggermente maggiore e questo causava che la temperatura dell’acqua fluttuava troppo dando dei colpi di acqua bollente ed altri di acqua fredda. Per l’emergenza va bene ma non come primaria. Veramente rumorosissima.

Beware! Mixed quality pumps! The first pump we ordered we had to return because something defective inside of it made it the loudest pump we’ve ever had in our lives. The second pump seemed to work better, but still would occasionally run far too loud to the point it was distracting. We called Jabsco to find out what’s going on with their equipment. They said they must’ve had a bad batch.We have now returned two pumps after wasting our time installing both of them. Not taking our chances on a third. Our next pump will be from a different manufacturer.

These pumps work great and last long, but the the pressure switches aren't always properly calibrated. This pump is rated to cut in at 20PSI and cut out once it reaches 40PSI... they easily off by 10PSI up or down. Had one which cut in at 10PSI and cut out at 30PSI, and one which cut in at 25PSI and out at 45PSI... and as far as I know the pressure switches can't be adjusted.

It works it’s a boat so will be easy to replace