2 powers hooked

Does anybody ever use to machine for more GPM??? And if so is that bad on the pumps and motor

It can be done and some do it. In theory you could hook two lawn mowers together and mow more grass. With either scenario you are stretching the limitations of the equipment, creating an unsafe situation, and generally hobnobbing crap together. When there is little to be gained there is often much to be risked.

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Agree…

How does it work I mean u get the GPM but how do you determine psi

In theory your gpm is doubled and your psi is as high as the highest rated machine. In reality you are one unloader away from grenading and having a dangerous mess. Some vendors sell a kit to join them but that will only last until the first law suit.

I guess I say “in theory” a lot.