Progressive Cavity Pumps

A progressive cavity pump is a positive displacement pump so it will pretty much pump a fixed volume at a given speed. The pump has no idea what it is connected to, be it one press or many presses. It must not pump against a blocked discharge and it will wear at a rate proportional to the time that it runs.

I assume that currently the presses are being energised by individual pumps.

As is pointed out already by the guest, there will be no effect on the pump (it is a positive displacement pump and hence will supply a fixed volume output) as far as the output protection is there against blockage.

Usually for these types of pumps we always provide a relief valve at outlet, which may be already in position for you.

Once this fixed volume output is given, it can be split into multiple outlets.

However, now, you lose the basic advantage of the fixed volume, since it will be very difficult to split this volume into part volumes (e.g. 100 lpm into say 5, 10, 10, 20, 25, 30 lpms for each press) - unless you go for a flow divider. You have to go for some type of positive displacement type of divider- piston type of gear type. In normal orifice type the accurate division will be a problem, since the flow rate will be dependant on the output restriction unless properly designed- with the hydraulic stiffness taken into account.

The net effect will be that your speed of the presses will not be maintained, and depending upon, some will move faster and some slower. Still the pump is not affected (as far as its life is concerned, it will pump in the fluid, making the press speed to adjust to its volume, till all the presses reach its stroke end, then the rest of the volume bypasses back through the relief.

The other problem is if your cylinders (i.e. presses are reciprocating) i.e. end of stroke trips solenoid to reverse.

You may have to design your circuit accordingly with the protections to maintain the synchronization, time delays etc.

Ant hydraulic expert can do the redesigning and put the circuit in order. But then again a basic question comes if a single pump fails, the total line stops, as it does for malfunction of any individual component of the line unless you have isolating valves.

BTW- you should not post the same thread multiple times. In case you have some clarification on the answer, ask it on the same thread. Since, as far the answer by the guest was there, it was to point and correct, so nobody tried to post further clarifications.