I am new to my sprinkler system - turned on the water, nothing worked - replaced solenoids - wa-laa! Water! BUT one of the valves would not shut off - went to the Home Depot and was told it was a bad diaphram - bought a new valve, replaced - turned on the water and this same valve will not turn off! Orbit brand 1" valve - I just don't get it! So frustrating! I've checked all wiring and the control box. Also - this valve sprays water out through the turn off knob on top while it is open. Any clues?