Under normal circumstances, all backflow devices should not leak. However, nearly all of them are designed to leak if certain conditions exist. For example, a reduced pressure principle (RP) backflow device may leak intermittently. This would indicate pressure fluctuations on either side of the line, and to some degree is normal behavior. However, if your backflow is leaking continuously, then you likely have a fouled check valve inside the assembly itself. The solution may be as simple as cleaning the check valves, but new seals may be warranted.
Do not attempt to repair the device yourself. This must be done by a certified backflow tester. Tests must be performed to ensure that the device is placed back in appropriate working order.
If you have more questions, please call:
Larry Miller 935-1533 ext. 131