V4 electro-thermal actuator (wax motor) works with valve body to control the open/close of the pipe of chilled water or hot water for air-conditioning system by the control signal from the thermostat. Thermal actuators (Wax Motors) is a linear actuator that converts thermal energy into mechanical by exploiting the phase-change behavior of waxes. There is no noise for the actuator open or close. ^ The electro-thermal controller can be connected with the valve body quickly by using press-button. It is flexible, convenient, reliable performance, durable and energy saving. MODEL DESCRIPTION TECHNICAL DATA AND SPECIFICATIONS INSULATING GASKET Product code - Blank: Downward U: Upward Voltage - Valve Size - Valve Type - Fig.1 Dimension Fig.2 Insulating gasket dimension “MAX 2” means the fully open max upward moving height (2mm). Xmm”: height from the top of the valve stem to the top of the connector (16mm) V4 WITH V4-S NORMALLY CLOSED VALVE V4U WITH V4-SU NORMALLY OPEN VALVE ONLY ASSEMBLY& DISASSEMBLY