Hot water tempering valve?
I got called to a restaurant they had interimintant hot water. Boiler was fine heated to thermostat temperature and shut off then relitwhe it cooled enough. It ran hot then would cool very quickly. I think it is either a bad check valve or a bad tempering valve or both.
Will a tempering valve allow cold water through to the hotside or is there an internal check valve?
Re: Hot water tempering valve?
The ASSE 1070s have integral check valves, the ASSE 1017s don't.
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