increasing GPMs

[jnoden 15]

I would really like to decrease the water pressure coming out of my gun while keeping the GPMs at 4gpm. I have an adjustment on my pump but it lowers the GPMs along with the decrease in pressure. Im assuming that a slightly larger hole in the nozzles would remedy this problem but Im not sure if this is the solution. Any thoughts on this would be much appreciated.

[PLD 14]

Yep. Search this forum for a link to a nozzle size chart. Here's a good thread on the subject. http://www.thegrimescene.com/forums/showthread.php?t=1937&page=1&highlight=nozzle+size+chart

FWIW, one of my favorites is a 40100 tip.

[tropical wave 22]

purchase different sized nozzles.... use a nozzle chart, higherpowersupplies.com or pwmall.com has a chart that calulates the size for you, you type in the gpm for your machine, then type in what pressure your looking for and it will tell you which nozzle size to buy....... I have nozzles to reduce pressure to 500psi in incriments up to 3500.......... the adjustment you speak of on the machine is the adjustable unloader......dont mess with the pressure by using the unloader, just pop in the proper nozzle for the psi you want and away you go......

[jnoden 15]

that is very helpful. I didnt know about the charts. Thanks.

[Aplus 525]

You can also switch to a dual lance setup.