On my mains supply I have a Stopcock, Double Check Valve and PRV in that order. The mains pressure is around 5 bar and the PRV is set to 3.5 bar. The double check valve and PRV are the right way round.
This is in a new build so all pipes currently have isolator valves fitted to the pipe runs to bathrooms, kitchen etc. The only working tap is located in the garage.
When the tap is turned on, it runs for a short time then the check valve cuts in and cuts off the mains supply. The PRV pressure drops to zero. The only way to restore the supply is to turn off the stopcock and turn it back on a small amount until the pressure rises to 3.5bar again then open the stopcock fully.
Turn on the garage tap and the same thing happens.
I have tried increasing and decreasing the pressure on the PRV but same problem.
Any ideas anyone ?
Thanks
Tom
This is in a new build so all pipes currently have isolator valves fitted to the pipe runs to bathrooms, kitchen etc. The only working tap is located in the garage.
When the tap is turned on, it runs for a short time then the check valve cuts in and cuts off the mains supply. The PRV pressure drops to zero. The only way to restore the supply is to turn off the stopcock and turn it back on a small amount until the pressure rises to 3.5bar again then open the stopcock fully.
Turn on the garage tap and the same thing happens.
I have tried increasing and decreasing the pressure on the PRV but same problem.
Any ideas anyone ?
Thanks
Tom