: twice in the last two days, I have had absolutely no water coming out of any hot water spout in the house. : No cold water coming out, just nothing at all. Is there a check valve? could it be other blockage? I think water is getting to the tank though.: Any help would be greatly appreciated.: MarcSticky non-return valve… galv pipes rusting and the rust blocking the inlet valve of the tank ???DISCLAIMERAll advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed plumber with my own business in Brisbane Australia