Series pump intsallation
Series pump intsallation
(OP)
hi,
I have an installation where the pumps avaiable in the market for that purpouse do not reach the head that i need to overcome the circuit pressure loss. Therefore, i wonder if i could install another pump after this 1st one.
Do you think that i need to leave some space between them or even install other acessories?
Thanks!!
I have an installation where the pumps avaiable in the market for that purpouse do not reach the head that i need to overcome the circuit pressure loss. Therefore, i wonder if i could install another pump after this 1st one.
Do you think that i need to leave some space between them or even install other acessories?
Thanks!!





RE: Series pump intsallation
Also, it's hard to believe there are no pumps available in the market to meet the requirements. How long did you look?
RE: Series pump intsallation
RE: Series pump intsallation
RE: Series pump intsallation
RE: Series pump intsallation
No, this is not related to that post. This is why i've created a new one.
I know that this solution applied for the other case was a stupid solution, because the problem could stay the same or become even worst and cause problems...
Thanks anyway!
Dear whoowho,
The pump is not vertical. It's a simple circulator. My concern is about valves, strainers, etc and the distance between the 2 pumps...
Thanks!
RE: Series pump intsallation
RE: Series pump intsallation
My concern is about valves, strainers, etc and the distance between the 2 pumps...
Hmmm . . . my concern would be:
Occurrence of a potential surge problem if the downstream pump trips and the upstream pump remains in operation. Typically what could happen is the upstream pump rides back on its curve to shut-off head. However, if the flow through the downstream pump is stopped abruptly, such as due to a check valve closure, then the kinetic energy of the fluid approaching the downstream (tripped) pump is converted into pressure, and the resulting pressure spike will travel upstream at the acoustic wavespeed. The surge pressure wave can bang into the upstream pump and cause a waterhammer event, in which the pressure spike observed at the upstream pump is far greater than the pump shut-off head. If the pressure spike reflects off the upstream pump (or another upstream check valve), there can be a trapped high pressure wave that oscillates between the two pumps. . . which sounds like "bang...bang...bang...". To remedy this situation, it is suggested to install a pressure relief valve or a pulsation dampener in the piping between the two pumps. Another possible item to consider is to provide an ESD switch to trip the upstream pump in the event of a failure of the downstream pump.
RE: Series pump intsallation
You do not mention service, i.e what fluid, flow ratr, head. Perhaps a vertical pump with a flange mounted motor will decrease your footprint.