Pressure Booster Pump Hydraulic
Pressure Booster Pump Hydraulic
(OP)
I have a municipal plant water system of 600 gpm with 10 distribution points at various elevations. I need to put a booster pump in for a belt press washing system. I need to go from about 105 psi to 130 psi at 100 gpm. What will the pressure booster pump do to the rest of the system pressure. I tend to think it will reduce the pressure to other distribution points, but then I think that I am adding energy to the system so I see a increase in pressure to the upstream system at other distribution points.
Second question: Do I just design for delta 25 to 30 psi at 100 gpm or do I have to design for some friction loss in the suction? Do I just put the pump inline and put a mnual bypass in? The belt press is just used 8 hours.
Second question: Do I just design for delta 25 to 30 psi at 100 gpm or do I have to design for some friction loss in the suction? Do I just put the pump inline and put a mnual bypass in? The belt press is just used 8 hours.





RE: Pressure Booster Pump Hydraulic
If you have to install the booster pump next to the existing pump feeding the system from some other location, you might want to install it in series, probably meaning 700 gpm at 25 psig capability, to give a total discharge pressure of 130.
What it will do to the system depends on how much flow and pressure in the system is increased and where the additional flow will be delivered within the system in relation to total length.
With what you have said so far, I can only say that I think you should expect to see at least a 25 psig increase in all the pressures you see now between where you install the booster pump to the point where you deliver the additional flow. Your suction pressures may change, change a little, or not at all. Can't tell much more without a whole lot more data.
It may make sense to install a booster at the belt drive location, with a tank if necessary, with a capacity to deliver 100 gpm at 130 psi and run your regular pump with a discharge valve opened a little more, or run the pump a little faster than normal for those 8 h, but I can't tell if you have those options.
We are really missing far too much data to say if this will work. I'm not even sure what the new total flowrate is, 600 or 700 and have no idea what this system looks like.
What would you be doing, if you knew that you could not fail?
RE: Pressure Booster Pump Hydraulic
The water supply to the belt press should have a break tank or BFP so there is no possibility of cross contamination.
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Order a complete package, pump and pump controller.
To answer your question:
The booster pump will have no effect on your water system. Your water distribution pumps should increase their output when the booster pump is operating.
RE: Pressure Booster Pump Hydraulic
If it's a new user then your existing system could be impacted depending on the lengths and line sizes. If this is the case, we can't answer the question with the information you've provided.
RE: Pressure Booster Pump Hydraulic
This belt press is an existing system. This is non-potable water so there is no need for cross contamination prevention.
I think that the booster would at least have an interlock with the main PW pumps in case the larger pumps are turned off.
If the booster pump fails the sludge would build up on the press fabric and an alarm would go on. The booster pump would need to go back to the regular non-boosted mode when the pumps are turned off after 8 hours. I think pump fail mode should also open the bypass valve.
RE: Pressure Booster Pump Hydraulic
Now, you want to increase the 100 gpm booster pump pressure to 130 psig
This will not change the pressure in the water system at all. Water is an incompressible fluid. You will not be using more water, just water at a higher pressure.
A higher water volume is a poor substitution for a water spray. What works better when you clean concrete, a 1500 psig water spray at low volume or a garden hose at high volume and low pressure?
You can buy these booster pump packages complete with control system that will automatically control the water pressure, alarm, VFD, etc. Talk to the local Grundfos rep.