I have a brass garden tap on the outside wall to which I attach the hose to water the garden. I am off on hols next week and have nobody to water the greenhouse so have bought one of those automatic watering kits. It has a programmable timer that fits to the tap. The problem is that you have to leave the tap on full and then it lets the water through at the correct time. I have very high pressure and the water is dripping through the fittings, no problems when the water is being let through, but that will only be 10 mins or so out of 24 hour period. The collar that screws on to the tap is brass i.e., it came with the tap. The tap connector is plastic, I have screwed as tight as possible. Any solution to stop the constant dribble of water? There is no water shortage where I live at the moment but I don't want to cause one!!