Flow + Flow

AKKAMAAN · Mar 11, 2010

J_J said:
The issue is not why two pumps have different pressures, but what if that is what you have to work with, and you want the GPM's. Just suppose you have two pumps that you want to put in parallel, and each develops a different pressure. Does anyone know the outcome. A pressure gage on the combined flow will probably show the highest pressure available.

Pressure available??? Pressure available will depend on RV setting. Actual pressure depends on the resistance of flow, and the two pumps will have to "produce" the same pressure....If one pump "produce" lower pressure than the other one, it wont generate any flow thru the check valve

Just had a second thought, and that is since the pressure is based on load, and the one hyd motor will develop 3000 psi, then the smaller 2200 psi pressure pump will relieve to tank, when the relief pressure is achieved.

I believe that if the load is within the pressure limits of the smaller pump, then the outputs will be additive. Any system relieving in a continuous mode, will develop a lot of heat.

Right!

Robert128 · Mar 16, 2010

Thanks for the great information guys. - By what you have told me - I think the setup that is already in place should do it.
The project I am working on is the Reel Mower Project in the upgrades section. - (I finally got the 30" decks JJ)
This machine originally had 5 reels on it - three in front and two under the belly. I removed them and I am putting 3 30" rotary cutters onto the mounts up front.
I want to divert the flow from the old back cutters up to the front. The back cutters had their own pump (same pressure) and their own valve/check valve setup. I want to get the front cutters as much power as I can. I have some options though. Leaving the valves as they are and joining all 5 outputs into a junction and running the lines for the 3 motors out from there. - So I would have 2 selonoid valves working in tandom, running 3 hydraulic motors