So I have a march 809HS with chugger stainless head with the bigger march impeller. I had a problem on my last brew day when I was pumping wort from my BK through my plate chiller. I kept losing prime and could only have valve about 3/4 open.
So tonight i did experiment with just the pump. I filled my keggle with about 6 gal of room temperature water. I hooked up my 3/4" hose (1/2" male npt camlocks) from my BK to pump and 3/4" hose (1/2" male npt camlock) to the output of the pump. I could not open the valve on the output side of the pump to 100% open. I could only get it about 85 % - 90% open. Flow rate at this setting is about 5 gpm. Now if put at 1/2" hose (1/2" male npt camlock) on the output side of the pump (keeping the 3/4" hose on the input side)I can run the pump with the valve on the output 100% open.
Anyone have some incite into why I lose prime when using 3/4" hose on the output side but have no issue when using 1/2" hose on the output side?
Thanks
Tim
So tonight i did experiment with just the pump. I filled my keggle with about 6 gal of room temperature water. I hooked up my 3/4" hose (1/2" male npt camlocks) from my BK to pump and 3/4" hose (1/2" male npt camlock) to the output of the pump. I could not open the valve on the output side of the pump to 100% open. I could only get it about 85 % - 90% open. Flow rate at this setting is about 5 gpm. Now if put at 1/2" hose (1/2" male npt camlock) on the output side of the pump (keeping the 3/4" hose on the input side)I can run the pump with the valve on the output 100% open.
Anyone have some incite into why I lose prime when using 3/4" hose on the output side but have no issue when using 1/2" hose on the output side?
Thanks
Tim