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An actuator converts the low level of energy into mechanical energy. All the different kinds of actuators specify that the conversion of any source of energy to mechanical force or energy such as it includes electrical, pneumatic, hydraulic actuators etc. its main responsibility is it operates the mechanism of positioning valve in the systems. Moreover these actuators also instructs a valve when to open and close, some may also includes switches which are popularly termed as valve actuators. There are different ways of operating mechanism for dictating the valve position. Many branded companies are supplying these valves and actuators to the customers like a branded company namely Johnson controls actuators & valves provides different products to the customers especially supplying HVAC controls products.
There is an existence of power operated valve actuators (these actuators are enabled by using gas pressure, electricity, hydraulic pressures etc.) which are helpful for regulating the desired flow, level etc automatically and in short these are termed as last elements of automatic control loop. Now a day’s people are using automatic systems rather than manual gearing systems. Many companies like Johnson controls actuators & valves introduce automatic valve systems essentially HVAC valves and actuators systems, HVAC control valves etc. respectively.
Coming to automatic valve systems, these are operated according to the installation by adjusting temperatures according to the requirements of the user. So it can shut down automatically when your temperature reaches the desired centigrade level. But in case of manual valve actuators, it should be adjusted by using gear mechanism fixed to the valve.
Role of a hydraulic actuator working on valve:
There are hydraulic actuators, pneumatic actuators, electric actuators in which all these actuators key responsibility is to operate the valve at scheduled time intervals. The presence of hydraulic ones is helpful for converting fluid pressure in the form of motion or movement. Compared to pneumatic actuators, these actuators are utilized especially on linear valves and sometimes its utilization will be also applicable on quarter turn vales respectively.
Key difference between valve and actuator:
Actuators are of different categories like electric, pneumatic actuators. The electrical actuators are essentially utilizes its use of electrical energy for producing mechanical energy. Similarly discussing about pneumatic actuators involves in the conversion of air pressure for producing mechanical energy. These pneumatic actuators are especially popular in its utilization for operating valves.
Let’s take a brief note on the functionality of actuators essentially makes use of it in HVAC systems;
There is a concept known as dampers which are meant popularly as controlling devices. These dampers are used in HVAC systems as final controlling devices. These actuators play a vital role in HVAC systems and acts as an intermediate between mechanical and control systems. In fact at this instance these actuators becomes very critical in getting controlled accurately. Moreover the DDC’S (direct digital control) outputs in HVAC systems of nearly eighty percentages approximately will be allocated by actuators only.
Hence the utilization of HVAC systems which strikes a huge demand in the current market. This is the reason why many companies are coming forward to supply these products.