Can the anti-freezing line at the pump outlet (heating pump line) be implemented by replacing the pump outlet shut-off valve with a butterfly valve?
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This post was last edited by A window that won’t close_KEIQ on 2018-9-10 08:41. Can the anti-freezing line at the pump outlet (heating pump line) be implemented by replacing the pump outlet shut-off valve with a butterfly valve? At the normal water pump outlet, a check valve and a gate valve are installed. A connecting pipe is arranged on either side of the outlet valve and the check valve to operate the pump and the standby pump; orifice plates and gate valves are installed on this pipe as an anti-freezing line (heating line) for preventing the standby pump from freezing in winter. Now, by replacing the pump outlet valve with a butterfly valve and eliminating the anti-freezing line (heating line), will such a design meet the landlord’s requirements?
The heating pump line mainly crosses check valves, rather than outlet gate valves.