Self Contained Water Supply

[Sonlight]

A question about self-contained water. I have a trailer with a 275 gl. water tank. The water is gravity fed into the washer. I am wondering if I need a water pump to supply the PW because when I let off the trigger there is a great deal of vibration (which doesnt happen when hooked to city water) and when the wather in the tank starts running low the pressure drops measurably. Do I need a feeder pump for this setup or is something else wrong? Also the unit is a Anno Reverberi 4.0 GPM. Would I need a 4.0 GPM pump or just something to "boost" the PSI to the machine.

Thanks for any help.

Steve

 

[north coast]

If your pump is a belt drive it should be able to draw from the tank. If your pump is a direct drive then you will need a pump to supply the pressure pump.

 

[Sonlight]

If your pump is a belt drive it should be able to draw from the tank. If your pump is a direct drive then you will need a pump to supply the pressure pump.

OK it is a direct drive unit so I need a pump. DO I need to match the GPM of the unit? I know that seems like a simple question but I am having a hard time finding a 4.0 GPM pump that I can afford.

Thanks

 

[north coast]

I would get something that is rated @ 20% higher gpm than your pressure pump. Better to have a little more than not enough.

 

[Larry L.]

Try going with a bigger hose from the tank to the pump

 

[mr. P's]

Sonlight,

I have used a direct drive pump for years with a 100 gal tank gravity fed with no problem.
Things I would check:
leaks in feed line, pump above water outlet of tank,
feed hose too long or to small around.
You should not need a pump tp get water to to your power washer. My thinking would be that your pump is above water outlet being you loose pressure as water level goes down.

mr. P

 

[Sonlight]

Sonlight,

I have used a direct drive pump for years with a 100 gal tank gravity fed with no problem.
Things I would check:
leaks in feed line, pump above water outlet of tank,
feed hose too long or to small around.
You should not need a pump tp get water to to your power washer. My thinking would be that your pump is above water outlet being you loose pressure as water level goes down.

mr. P

Ah, interesting. Yes the pump is above the water outlet but I can't remedy that because the water outlet on the tank is at the very bottom. I would have to mount the pump below the trailer to get it below the water outlet.

If I move the outlet higher, I lose water capacity.

 

[Hotwaterwizard]

I think you better check for an air leak somewhere between the pump and the tank.
I have ran many with a water tank and usually there should be a filter in line. If that filter is plugged then there will be a suction problem.
New packings and valves would help also.
I have actually pulled water thru a 50 foot hose with a direct drive pump with no problem.