If both pumps are turning at the same time, all you need to do is connect the outlets. If one pump can be stopped, a check valve at the outlets will be needed to prevent reverse flow.
Flow combiners can used to syncronize the return oil from two cylinders. ( and a flow splitter used to sync oil to cyliners). A flow combiner won't work with a positive displacement pump as you would be forcing a restriction on the higher volume pump.
As a side note. Two stage pumps ( like on a log splitter with rapid extension) couple the output of two pumps for rapid extension. As do some hydraulic punch presses. When high presure is needed, the output of one pump is bypassed to the tank.
Any specifics as to what pumps / systems you want to combine?
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
... [Read Article]
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