Low pressure

[Little Buddy 14]

Hey guys,

I was wondering how to lower the pressure. Is it all through the unloader? Or better yet, how would i go about just building a low pressure system thanks.

Here is a video of mike from first choice and i am very interested in a extremely low pressure setup

Thanks, JL

[Doug T 19]

To lower the psi, just increase the tip size.

[Little Buddy 14]

lets say you have a 4gpm and 5.5gpm machine, what tip size to get that low of pressure.

[John Orr 206]

lets say you have a 4gpm and 5.5gpm machine, what tip size to get that low of pressure.

I wish that I could find a better copy, but this is the best nozzle chart I have ever seen. Simple, intuitive. Lowering the pressure is as simple as increasing increasing the orifice size of the tip. If you lower the pressure with the unloader, you will also lower the flow of water. The normal size tip (assuming 3000 psi) for a 4 gpm machine is 4.5 and 6.5 for the 5.5 gpm. The tip most likely used in the demo would be a 30.0, which could also be used to downstream chems.

[Little Buddy 14]

thanks, i dont think i have seen a 30.0 before, where could i find one

[Rick2 42]

To lower the psi, just increase the tip size.

Boyle's Law. (I'm such a geek).