If they both have trapped pressure unloaders just tee the outputs together you could use check valves but dont need them.
Connect two pressure washers together.
Depends on the type of unloaders that is on the machines.
All you need to do this is a quick connect kit.
I am guessing the lesser of the 2.
Insert the hose into the high pressure inlet usually found on top of the water inlet for the garden hose and tighten it.
It s possible to connect two pressure washer hoses together.
Connect the high pressure hose that comes with the pressure washer.
Quick connect attachments are designed to snap into one another without any twisting.
As far as pulling from aux fuel tanks both machines would need fuel pumps.
How to connect two pressure washers better method ask the vendors.
After that attach the male qc plug to your pump outlet.
Also on hot machines does connecting 2 pressure washers together have any effect on flow switches and other safety related items pop offs burst discs etc.
2 attach the garden hose.
They don t have threads on both ends.
Pressure washer quick connect fittings you can turn an m22 pressure washer hose connection into a qc using a single fitting.
You can purchase any kind of hose that matches your pressure washer but you need to make sure that your quick connect or coupler matches that hose.
What would pressure output be when connecting a 3500psi and 3000 psi machine be.
Besides the obvious matching the two will also minimize pressure losses.
If it is a 6 gpm and under pump use two wire 3 8 id jump hose and if greater than 6 gpm use 1 2 id two wire jump hose.
I purchased from northern tool edou pressure.
Install a jump hose into the outlet of each pump.
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Tutorial on connecting two pressure washing hoses together to make them longer adapter link below for amazon.