Pressure Washing Siamese Kit

This is a GPM Maximizer and also commonly referred to as a Pressure Washing Siamese Kit. This allows you to hook up two pressure washers of the same PSI to achieve more water flow. So if you have two 4GPM Pressure Washers, you can achieve 8GPM by hooking them both together. In the video below you will see I used it to combine our 9 and 8 GPM pressure washers together. Both machines need to belt drive, have the same pressure trap unloader, and both unloaders should be set at the same PSI.  Does not come with check valves.

Comes as  DIY KIT that you will put together yourself. Does not include the fittings at the end of the hoses that you need to connect to your machines. If you need those you can order them here. You'll need either the FPT COUPLER or FPT PLUG.   The hoses come in blue, black or grey, depending on availability, are one wire and rated for 4000PSI.

Are you starting a pressure washing business? Check out my Online Pressure Washing School that will help you drastically cut your learning curve. You can also get some great pressure washing tips and tricks at my YouTube Channel.  As always, if you have any questions I can help you with, please use our CONTACT FORM.