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Heating/cooling and hot/cold domestic water consumption measuring, 4-way zone valve

Composition
 
Composition
Painted galvanized metal box with key-operated lock - Zone valve DN20 4-way with by-pass passage - Servomotor: 230 Vac, 50 Hz - Impurity collection filter DN20 - Ball valve DN20 with pipe union - Ball valve DN20 with integrated retaining cartridge on domestic water line - Gate valve DN20 to calibrate and balance the heating/cooling circuit

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Notes
 
(*) setup for thermal energy meter size DN15 (connection 3/4") and volumetric counter DN15 (connection 3/4")
(**) setup for thermal energy meter size DN20 (connection 1") and volumetric counter DN15 (connection 3/4")
(***) setup for thermal energy meter size DN20 (connection 1") and volumetric counter DN20 (connection 1")
The boxes thus assembled are suitable for connection on the left side of the main pipelines of the centralized system
 

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