How to purchase and install electric butterfly valves?

 

Electric butterfly valves have two connection modes: flange type and wafer type. It is an important execution unit in the field of industrial automation control. Electric butterfly valves are mainly suitable for the control of pipeline flow, pressure and temperature in various industrial automated production. For example: electric power, metallurgy, petrochemical, environmental protection, energy management, fire protection system. Electric butterfly valve belongs to a variety of electric valve and electric regulating valve. Below we mainly introduce the procurement, installation and maintenance of electric butterfly valves.

 

 

Steps and basis for valve selection before purchasing

In the fluid piping system, the valve is the control element, and its main function is to isolate the equipment and the piping system, adjust the flow, prevent backflow, adjust and drain the pressure. Because it is very important to choose the most suitable valve for the piping system, it is also important to understand the characteristics of the valve and the steps and basis for selecting the valve.

 

The valve industry has been able to produce a complete range of gate valves, globe valves, throttle valves, plug valves, ball valves, electric valves, diaphragm valves, check valves, safety valves, pressure reducing valves, steam traps and emergency shut-off valves so far. 12 categories, more than 3000 models, more than 4000 specifications of valve products; applicable media are water, steam, oil, natural gas, strong corrosive media, flammable media, toxic media, explosive media, and radioactive media, etc. .

 

 

Steps and basis for selecting valves

1. Clarify the purpose of the valve in the equipment or device, and determine the working conditions of the valve: applicable medium, working pressure, working temperature, etc.

 

2. Determine the nominal diameter and connection method of the pipeline connected to the valve: flange, thread, welding, etc.

 

3. Determine the way to operate the valve: manual, electric, electromagnetic, pneumatic or hydraulic, electrical linkage or electrohydraulic linkage, etc.

 

4. Determine the type of valve: gate valve, globe valve, ball valve, butterfly valve, throttle valve, safety valve, pressure reducing valve, steam trap, etc.

 

6. Determine valve parameters: For automatic valves, first determine the allowable flow resistance, discharge capacity, back pressure, etc. according to different needs, and then determine the nominal diameter of the pipeline and the diameter of the valve seat hole.

 

7. Determine the geometric parameters of the selected valve: structural length, flange connection form and size, valve height dimension after opening and closing, connecting bolt hole size and number, overall valve outline size, etc.

 

 

Installation precautions of electric butterfly valve

1. When installing, the pneumatic butterfly valve should stop in the closed position;

2. The opening position should be determined according to the rotation angle of the pneumatic butterfly valve plate;

3. For butterfly valves with bypass valves, open the bypass valve before opening;

4. The installation should be carried out according to the installation instructions of the manufacturer. The heavy butterfly valve should be installed with a firm foundation.

 

 

If you have any questions about the purchase of electric valves, please contact us in time.