VA-3000 series electric modulating valve actuators can match with VB3000 series threaded valves or any other valves through different connectors. That are suitable for heating, ventilating, air-conditioning system (HVAC).
SZV motorized valve is composed of two parts with actuator and two-way/three-way valve that two parts can be easy assembled and demounted by manual operation. When the thermostat sends the signal to actuator, valve will fully open and water flow. When there is no signal sent by thermostat, valve will fully close by automatically spring return