Jabsco Pumps

[philsimo]

Hi All,

i need to buy a water pump shortly and was having a look at the Jabsco Par-Max 3 pumps, i notice there are two types. Most of the specs. are the same, even the price,the only difference being the pressure, one cuts in at 15psi and out at 25psi and the other cuts in at 20psi and out at 40psi.

Can anyone tell me why? and more importantly which should i go for, i have a 65`reverse layout with the usual number of outlets.

Thanks Phil

My link

Edited March 19, 2011 by philsimo

[WotEver]

My link

Doesn't appear to work right now. It's not your link, it's their site.

 

Tony

[Robbo]

If there the same water flow then the higher pressure one will be able to maintain that flow through smaller and longer pipes.

[philsimo]

Thanks Robbo,in that case i don`t think it matters which one i choose.

[Robin2]

I have a Par Max 4 with the low pressure setting - cut in 10psi cut out 25 psi which works very well - good shower pressure and able to feed the washing machine and the kitchen sink at the same time.

 

I wonder if the higher pressure model would be able to maintain the pressure with a large flow rate. They use the same pump with a different pressure switch. I think the higher pressure is intended for something like a washer-spray that needs a high pressure. Also I think you can buy the switches as spare parts. I found Cleghorn Waring very helpful in the past.

 

As far as I know the Par Max 3 has a lower volume throughput.

[steelaway]

Hi All,

i need to buy a water pump shortly and was having a look at the Jabsco Par-Max 3 pumps, i notice there are two types. Most of the specs. are the same, even the price,the only difference being the pressure, one cuts in at 15psi and out at 25psi and the other cuts in at 20psi and out at 40psi.

Can anyone tell me why? and more importantly which should i go for, i have a 65`reverse layout with the usual number of outlets.

Thanks Phil

My link

 

 

Dont forget that the pressure relief valve on the calorifier will be set at about 30psi and it will blow off above this.

 

Alex

[Smelly]

Dont forget that the pressure relief valve on the calorifier will be set at about 30psi and it will blow off above this.

 

Alex

 

I thought they were usually closer to 45, i.e 3 bar.

 

I suspect this high/low pressure business may explain why our old Jabsco happily serviced our plumbing while the new one cycles...

[philsimo]

Thanks for the replies, would i be right in thinking the lower pressure one would be best for a standard installation?

[steelaway]

Thanks for the replies, would i be right in thinking the lower pressure one would be best for a standard installation?

 

 

We've used one of these for over 5 years without problem. Plenty of pressure at the taps and shower

 

My link

 

Alex