Water Pressure Switch

[eugene]

I bought a small RV water pump but didn't realize its not automatic. Does anyone know if I can buy a small inline pressure switch so I can make it automatic where it shuts off when the lines are pressurized? I haven't had much luck searching for them.

 

[rambrush]

Well my local true value hardware has pressure switches on the shelf. Grainger has a great selection also.

 

[eugene]

Do you have any brand names? True value hardware stores seem to be independently run, I've never found the same products in two of them.

 

[Count Fred]

Have you tried a local RV parts and service shop?

Cheers,
JFS III

 

[rambrush]

something like these should work,

http://www.grainger.com/Grainger/ww...entSearch&originalValue=flow+switch&L1=Liquid

 

[eugene]

Have you tried a local RV parts and service shop?

Cheers,
JFS III

Yes, no inline switches, just ones that are repair parts for pumps that already have them.

 

[eugene]

something like these should work,

http://www.grainger.com/Grainger/ww...entSearch&originalValue=flow+switch&L1=Liquid

Looks like they switch the flow, not a pressure switch.

 

[ntsqd]

http://www.mcmaster.com/#pressure-switches/=21k695

 

[eugene]

Those look like it, though for the cost of some I may as well buy the $60 rv pump even if the flow rate is higher than I need.
I'm thiking of redesigning the water system wayway, I was wondering if any of the rv pumps could pump from a shallow well.

 

[UK4X4]

Rather than use a switch use a circulating circuit

ie tank pump pressure circuit restriction tank

pressure circuit has a T and you tap / shower

Switch the pump on you have a pressurised circuit

use as required- you won't destroy the pump as its still flowing- turn off when finished.

a restriction is simple a small hole

 

[eugene]

This isn't just for a shower though, fixing up an old camper so I want the pump to be able to run on demand when were doing dishes and such.

 

[ntsqd]

p/n 3460K21
$21.78 each

I've no idea what the pump cost, but I'd rather have an off the shelf switch than one built into the pump.