A customer has tribune unvented system .
I had to change the regulation valve due to it leaking water into the tun dish.
Since then when the customer turns the hot water tap on they get a machine gun noise coming from the valve, this doesn't happen all the time.
Speaking to tribune, they told me that the tank and mains water pressure should be equalised. I've checked the mains water pressure which is 3. 8 bar. The expansion tank is 3 bar.
Any suggestion
I had to change the regulation valve due to it leaking water into the tun dish.
Since then when the customer turns the hot water tap on they get a machine gun noise coming from the valve, this doesn't happen all the time.
Speaking to tribune, they told me that the tank and mains water pressure should be equalised. I've checked the mains water pressure which is 3. 8 bar. The expansion tank is 3 bar.
Any suggestion
