Hello everyone. I know I don't show up here often and I apologize for that. Even after being in this "Soft Wash" roof cleaning business since the early 1990's I came here and learned SO MUCH!
My current story is this:
I started out with 1.8 gpm Sureflo Pumps many years ago and 3/8" ID hoses.
It was slow and those pumps didn't last long [probably because of the 3/8" hoses!]
Anyway, after coming here, I worked my way up to 3/4" hoses and 5 gpm Delavan pumps. I did a lot of work with those! I still have that complete setup on the ready. However, I have cut back to 2 gpm Delavan pumps and 1/2" ID hoses. Not quite as fast, but much less danger of runoff harming plants.
I felt that I really wanted something in between 2gpm and 5gpm, so I hooked up two 2gpm pumps and they will run smoothly through the 1/2" 250' hoses.
My son and I did some careful testing and the end result is more like just over 3gpm with two 2gpm pumps. JUST RIGHT!
I tried running one of my 5gpm pumps through that 1/2" hose, but it cycles on and off. So, I guess i'll have to use it just with 3/4" or 5/8" hose.
Just thought I would throw this out here for ya.
I may not be the only one who does not care for all the wasted cleaning solution running off into the gutters or onto my tarps etc. With what Chlorine costs, I hated watching it run down those tile roofs like Niagara Falls!
I feel more secure now.
Thanks to Chris at Apple and all of the other knowledgeable folks I have shared information with through the years!
I will be back around, from time to time.
Chuck Bergman Non Pressure Roof Cleaning in Charlotte County Florida