Adjusting Pressure - Power Wash Network "The Power Wash Contractors Forum"

Scrappy · #1 (**permalink**) 09-11-07

I HAVE AND ALCOTA CLEANING SYSTEM WITH A 16 HORSE VANGUARD
its ranked at 3500 PSI and is supposed to be ran at full throttle so how do i drop the psi with out dropping the RPM

Mark · #2 (**permalink**) 09-12-07

Dual lance / variable pressure wand.

Bigger nozzles = lower pressure.

Quote:

GP Dual Lance with Quick Connects and Soap Nozzle
FEATURES:

Equipped with a quick connect plug on the inlet
Quick connect socket on the high pressure discharge pipe
Brass soap nozzle is attached to the low pressure discharge pipe
Provides a convenient method of operating a downstream chemical injection system by turning the insulated adjustment handle
Designed for hot or cold water systems
Features a round reinforced polymer insulator mounted to 1/4" zinc plated steel pipe for comfort and durability

john orr · #3 (**permalink**) 09-12-07

On each nozzle, there is a number - say its 25040. The first two numbers indicate the spray angle. (White is 40 degrees, green is 25, red is 0.) The last three numbers (though sometimes you will only find two) are the size of the orifice. Increasing the size of the orifice will decrease the pressure at the tip without changing the flow (gpm's). Here's a link to a nozzle chart to help you figure out which ones you will need.

Scrappy · #4 (**permalink**) 09-12-07

Thanks guys that helps me out a bunch . . . man i don't know what i would do with out this Bb. thanks again