reducing roller pump

[JeffW 14]

I am using a roller pump for roof cleaning and was wondering how far you can reduce the hose on the discharge side of the pump.It's port is 3/4".I have been using 5/8" hose.How much more can it be reduced and how does this effect the pumps pressure? I would like to reduce it down to 3/8" due to the weight and storage benefits. Thank you very much!

[Don Phelps 85]

Does yours have a pressure regulator? Most of the roller pump setups that are sold as a complete unit (engine included) will have one. I would think you could adjust it to open further if so, to reduce the added pressure created by the reduction in hose volume. If yours doesn't they're available at Tractor Supply or most other farm/ag stores.

[JeffW 14]

Thanks Don, Yes it does have an unloader and I will take that advice and give it a try.

[Don Phelps 85]

I'm sure that you're already aware of this, but don't forget to open the regulator all the way before firing up the machine the first time after reducing it.

[JeffW 14]

Actually Don I never even gave it a thought,so thanks for making me aware.