Hi Richard
In meantime I add 3rd checkvalve just after pump (before dividing water line to pre comp and pre TB), so in case of same failure of one checkvalve it will be secured by this 3rd one....Checkvalve which was stuck open was about 1 year old. But after this it never happens again, so Im using it again.
I know that solenoid can be more suitable, but I was preffering mechanical setup at this time, but you are right, maybe I will use solenoid then.
Just a question regarding to pressure drop at checkavalve: can you explain this more deeply please? It mean that if checkvalve have cracking pressure let say 30psi, and pump is 150psi that at nozzle I will have just 120psi pressure?
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