What water pump?

[Next Stop]

Having seen water pumps from £10 to £60, self priming, submersible, accumulators. So many options but what do I really need?
I plan on having a small cold water sink in the toilet room and a cold water feed to the kitchen sink, both fed from a single tank.
Not sure if I need two separate pumps or will one suffice, I think I'd like an inline pump, does anyone have any recommendations on what to choose?

 

[pappajohn]

One inline diaphragm pump will be fine, all motorhomes only have a single pump for ALL water outlets, hot and cold.
Something like a shurflo pump which works on water system back pressure to turn on and off.

 

[Next Stop]

One inline diaphragm pump will be fine, all motorhomes only have a single pump for ALL water outlets, hot and cold.
Something like a shurflo pump which works on water system back pressure to turn on and off.

So something like a trail king 7 would probably suffice? I presume that this sort of pump would not need microswitch taps then and that I could use regular household taps?

 

[rosalan]

Micro switch taps go with submersible pumps. A different system where each tap opens the pump when turned on. The other system involves a pressure regime. Turn on a tap the pressure drops and the pump switches on. Due mainly to the cost of taps for the micro-switch type,, most systems opt for the pressure dropping to activate the pump.

 

[pappajohn]

Yes, trail king, Fiamma..... They all work the same way and just need a 12v supply and earth at the pump.
Fitted somewhere near the tank they are self priming and the outlet pipe can be split between any number of taps and to a boiler if required.
Turning off the tap pressurise the pipework and a pressure sensor in the pump switches off the supply. Open a tap and the pressure drops so the sensor turns the pump back on.
The only problem you may have is reducing the domestic tap pipe to the pumps 12mm diameter pipe connectors.

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[Lenny HB]

Cheapest solution would probably be a submersible pump with a separate pressure switch.

 

[Next Stop]

This is making m

Yes, trail king, Fiamma..... They all work the same way and just need a 12v supply and earth at the pump.
Fitted somewhere near the tank they are self priming and the outlet pipe can be split between any number of taps and to a boiler if required.
Turning off the tap pressurise the pipework and a pressure sensor in the pump switches off the supply. Open a tap and the pressure drops so the sensor turns the pump back on.
The only problem you may have is reducing the domestic tap pipe to the pumps 12mm diameter pipe connectors.

Thanks for this info, I think this is the way to go, a little more expensive than a submersible but money can be saved on the taps, most microswitch taps that I've seen are either crazy money or rubbish looking.
?

 

[tonyidle]

Micro switch taps go with submersible pumps. A different system where each tap opens the pump when turned on. The other system involves a pressure regime. Turn on a tap the pressure drops and the pump switches on. Due mainly to the cost of taps for the micro-switch type,, most systems opt for the pressure dropping to activate the pump.

That isn't true. Either type of pump will work with either a pressure switch or tap switches. The only difference is that the submersible pump has a much higher output (flow) and is considerably cheaper.

 

[peterc10]

That isn't true. Either type of pump will work with either a pressure switch or tap switches. The only difference is that the submersible pump has a much higher output (flow) and is considerably cheaper.

And the submersible is a lot quieter .............. no more waking the wife up when I flush the loo in the middle of the night.