• For closed cold and warm water systems
• For modulating control of air-handling and heating systems on the water side
• Snap-assembly of the actuator
• Torque motor 1 Nm
• Nominal voltage AC/DC 24
PI Zone Valve Specifications
Pattern : 2-way
Fluid : Cold and warm water, water with glycol up to
max. 50% vol.
Flow Temperature : -20 – 120°C (36 – 140°F)
Flow Temperature Note : with Actuator 2 – 90°C
Differential Pressure :16 – 350 kPa
Close-off pressure : 1400 kPa
Flow Characteristic : Equal percentage (VDI/VDE 2178), optimised in
the opening range
Pressure Stability : ±5% with a pressure value of 35 – 350 kPa
±10% with a pressure value of 16 – 35 kPa
Leakage Rate : Air-bubble tight, leakage rate A
Angle of Rotation : 90°
Angle of Rotation Note : Operating range 15 – 90°
Pipe Connection : Internal thread according to ISO 7-1
Installation Operation : Upright to Horizontal (in relation to the stem)
Rotary Actuator for Zone Valves
Nominal Voltage AC/DC : 24 V
Nominal Voltage Frequency : 50/60Hz
Nominal Voltage Range : AC 19.2 – 28.8 V / DC 21.6 – 28.8 V
Power Consumption in Operation : 0,3 W
Power Consumption in Rest Position : 0,3 W
Power Consumption for Wire Sizing :0,6 VA
Connection Supply / Control : Cable 1 m, 4 x 0.34 mm²