Pressure pump ???

2.5 bar = 36.25943 PSI

What is your water Volume/Flow requirement ?

What is supplying water to the pump? Is it recirculating from the pools or is it "new" water going to the pools. The logical answer is you need a bigger pump. The limitation for a "second inline" pump is how much water can flow through the initial pump. You might get higher pressure at the cost of less volume.

@DonL

water flow requirement is 3 gpm for the swimming pool heaters......

@hj

Water is recirculating between pool, filter and to pool heater

It think that using the pools pump would be the best way to go, for the swimming pool heater and filter.

I guess I don't understand what you are trying to do.

Maybe hj or some other expert has an answer for you.


Good Luck on your project.


DonL

For that installation, your "main pump" is inadequate. You either need a larger pump, or individual pumps for each return line. There could also be mechanical restrictions in some of the equipment which are restricting the pump's flow. Only a visual inspection and testing will determine the EXACT cure for your problem.

@hj
Thanks for the reply...

The pressure gauge reading at the main pump is about 20 psi...and according to me there are no mechanical restrictions in the whole system...this main line is divided into three sublines. The pressure reading at the pool heater is about 15 psi... and according to me this decrease in pressure is due to distance and height. The main supply line is at the ground level and pool heater is at a height of apporx. 26 feets. and this must be limiting the pressure. So in this case what would be u r suggestion?