Control valves and actuators are designed to ensure the transportation of gases and liquids through pipelines. Their main working parameter is the conditional pass. It means the inner diameter of the connecting pipes. Throughput is the volume of water that a fully open mechanism can pass at a pressure drop of 0.1 MPa and a temperature of +20 degrees.
Control valve can be equipped with electric drive , which converts electric current into mechanical movement, that is, actuates the valve stem. This locking valve is most actively used in hot and cold water supply systems.
Characteristics and features of valves
Control valves are built into the pipeline system. They regulate pressure and flow in it. This problem is solved by measuring the passage of the medium through the cross section. The control equipment ensures that the set parameters are saved in the system. When choosing valves and actuators, pay attention to the following technical data:
- bandwidth;
- nominal bore DN;
- nominal pressure PN;
- dynamic range;
- authority - an indicator of the regulatory capacity of a device;
- consumable parameters;
- linear flow parameter;
- equal percentage flow parameter;
- parabolic flow rate.
The above characteristics should be optimally adequate to the requirements of the particular pipeline on which you will build the device. Any pipeline system consists of elements of various diameters, in order to ensure its maximum performance, control valves are required, identical in size to them. A wide range of devices from brands such as Belimo, Danfoss and Honeywell will help you with this task.
International Standards for Shut-off Valves
In Ukraine, engineering communications are equipped with valves of three types (shut-off, shut-off-control and control valves), then international standards presuppose only control valves of 6 classes, corresponding to the volume of leaks. In Ukraine, the world technical standards are gradually being introduced, and, therefore, the future belongs to the control valves of pipelines. The use of electric drives makes it possible to automate the operation of pipelines and is successfully used in a wide variety of applications�
