The radiant changeover valve station connects heating water and medium-temperature chilled water mains to thermal zones using four typical zone isolation ball valves and two typical strainers. Two typical autoflow balancing valves and two typical modulating control valves regulate flow, complemented by a two-position mixing valve. Pipe insulation sizing follows the larger of the heating water return or medium-temperature chilled water return specifications.
MCWR MCWS HWR HWS ZONE ISOLATION BALL VALVES (TYP 4) SUPPLY TO ZONE STRAINER (TYP 2) 2 POSITION MIXING VALVE RETURN FROM ZONE USE LARGER OF HWR/MCWR INSULATION MODULATING CONTROL VALVES (TYP 2) AUTOFLOW BALANCING VALVES (TYP 2)
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