I have an old Rainbird Valve that has a bleeder valve on the top. My drips on the irrigation system stay on with a slow flow to them all the time. I just recently replaced the diaphragm and solenoid. After I put the system back together the system still leaks out the the drips that run off of that valve. Should I just replace the old valve? Currently my valve has female ends with male ends that are pvc cemented to the irrigation pipe. I was wondering if there are any valves out there that have f...