andy hinson Report post Posted April 4, 2015 I have one of these pumps for chemical transfer. I recently have been using it for partial roof cleans. It is very handy for small jobs. It has 1/2" ports and suggest minimum 3/4 " diameter hoses. My question is. If I had 3/4" suction hose and 1/2" hose on gun would I increase distance? The pump is on demand 60 psi Share this post Link to post Share on other sites
garyw Report post Posted April 4, 2015 On most all pumps the suction supply shoud be at least 1.5 times the suction port size. 2 times is actually better. I have a 2" pipe attached to both my 1" aodd pumps, that is how I shoot 70+ feet. Share this post Link to post Share on other sites
andy hinson Report post Posted April 4, 2015 Gary what s always confusing to me is the restriction at the pump. In my case on the Northern. 1/2". I also have 1/2" & 3/4" air pumps but I have had problems with them on jobs at exactly the wrong time. The Hypro would be the perfect back up pump but for $800 I cou buy another ARO Ingersol Rand. I guess the larger suction line assures the pump is not starving for chemicals and possibly sucking the line dry Share this post Link to post Share on other sites
Sussex County Roof Cleaning Report post Posted April 4, 2015 I gotta ask. You say you've had problems with the air pumps. What happened that made you go back to 12 volt? Share this post Link to post Share on other sites
andy hinson Report post Posted April 5, 2015 I have not gone back to 12v as my only pump. I was pleased with it and I had a couple small partial roof cleans 3000sf. So I thought I would try it. Small tank small pump. Took up little space worked well. I have a couple 1/2" air pumps. Generation 11 pump. And others that I take with me to the larger jobs. I like a back up for the back up. 1 Apple Roof Cleaning (813) 655-8777 reacted to this Share this post Link to post Share on other sites
