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Caleffi

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3 Zone Expandable Switching Relay w/ Priority (ZSR103)

SKU# 5329
The ZSR series is a zone pump and boiler operating control for multiple zone hydronic heating systems. The ZSR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action.
€194.05

4 Zone Expandable Switching Relay w/ Priority (ZSR104)

SKU# 5335
The ZSR series is a zone pump and boiler operating control for multiple zone hydronic heating systems. The ZSR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action.
€246.91

6 Zone Expandable Switching Relay w/ Priority (ZSR106)

SKU# 6561
The ZSR series is a zone pump and boiler operating control for multiple zone hydronic heating systems. The ZSR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action.
€271.05

1/2" Sweat Inlet x 1/2" F NTP Outlet Backflow Preventer and AutoFill Combination

SKU# 8559
Pre-adjustable automatic filling valve with backflow preventer.
€137.08