jrp
New Member
- Messages
- 4
- Reaction score
- 0
- Points
- 1
I've got a Dayton jet pump set up that is used for irrigation only. The water source is a pond located up a hill. So there is several feet of positive pressure on the intake line. There is no foot valve. The pump is fitted with a pressure sensor tube on the pump housing. It feeds a 30/50 switch. The pump, and pressure switch is new. Since the water source is a pond, there is considerable small debris that gets sucked into the intake including a lot of duckweed. This stuff goes through the pump just fine but clogs up sprinklers. So, I installed a screen filter downstream of the pump and before the pressure tank. This requires frequent cleaning, but that's OK.
My problem started today when I noticed there was no flow to the pump. Turns out that the check valve that is installed in the suction line just before the pump, got clogged with the duckweed. So I took the check valve out. This didn't work out so well because when the pump turns off at 50 psi the water simply gushed back through the pump and to the pond. The tank looses pressure, pump starts, etc. An endless cycle. So I installed a check valve between the pump and the pressure tank. That doesn't solve anything. (It was late in the day, I wasn't thinking too clearly.)
I know if I install a check valve in the suction line, the system will run fine. But, it will simply get clogged again with the duckweed. So, my question is: can I move the pressure sensing point from the pump housing to the pipe that's between the check valve (downstream of the pump and filter) and the pressure tank? Is there some reason that a jet pump needs to monitor pressure right at its housing?
Thanks for any advice and encouragement,
Jeff
My problem started today when I noticed there was no flow to the pump. Turns out that the check valve that is installed in the suction line just before the pump, got clogged with the duckweed. So I took the check valve out. This didn't work out so well because when the pump turns off at 50 psi the water simply gushed back through the pump and to the pond. The tank looses pressure, pump starts, etc. An endless cycle. So I installed a check valve between the pump and the pressure tank. That doesn't solve anything. (It was late in the day, I wasn't thinking too clearly.)
I know if I install a check valve in the suction line, the system will run fine. But, it will simply get clogged again with the duckweed. So, my question is: can I move the pressure sensing point from the pump housing to the pipe that's between the check valve (downstream of the pump and filter) and the pressure tank? Is there some reason that a jet pump needs to monitor pressure right at its housing?
Thanks for any advice and encouragement,
Jeff