Hmmmm. The more I think about this... Most irrigation solenoids use line pressure (high) on a diaphragm to close the valve. If the pressure in the water line drops to well pressure (low) when the pump turns off, that may not be enough to keep the irr valve closed. Keeping the hyd valve in the system may lock in the line pressure between it and the solenoid and keep the irr valve closed? Does that make sense to you?

Gotta run out for dinner and some shopping. I'll check in later.

Scott

Scott

My HT