First, product overview

     Electric wire valve is widely used in petroleum, chemical industry, metallurgy, light industry, paper making, power station, refrigeration and other fields of work. Electric ball valve is a rotary ball valve Angle of 90°, excellent sealing performance, flow capacity, flow resistance coefficient is small, simple structure, easy maintenance, long service life, valve channel and connecting pipe diameter equal and into a diameter, media can almost no loss of flow. The product is usually used for the occasion of strict sealing requirements, in addition to the control of gas, liquid, steam medium, but also suitable for the control of sewage and containing fibrous impurities media.

Second, the basic principle of the construction of electric screw ball valve

1. Electric screw ball valve will not be limited by the installation orientation, and the medium can flow freely. Low liquid barrier, full-diameter ball valves have virtually no fluid density.


2. Electric screw ball valve is simple in structure, relatively small in size, light in weight and convenient in maintenance.


3. Be close. It has two sealed surfaces. The sealing surface of the ball valve at this stage is generally used a variety of plastics, good sealing performance, can be completely sealed. It has also been widely used in ultrafiltration devices.


4. Electric ball valve production is often for practical operation, fast opening and closing, light weight. The actual operation is simple, open and close convenient, from open to full seal, only rotate 90, convenient remote operation.


5. Convenient maintenance, ball valve structure is simple, sealing ring universal ball fitness exercise, convenient disassembly and replacement.


6. Electric screw ball valve has better sealing performance. In the case of open or fully sealed, the sealing surface of the ball and high pressure gate valve is protected with the medium. The sealing surface of the gate valve is not easy to be etched according to the medium.


7. Wide application coverage, from small to a few millimeters of aperture to the diameter of many meters, from high vacuum pump to high working pressure can be used.


8. Because the electric screw ball valve has scrubbing performance in the opening and closing process, it can be used as a medium with dissolved total solid particles.

Third, product models and specifications

1, according to the use of environment, electric screw ball valve can be divided into indoor appearance, overall regulation, explosion-proof explosion-proof type, its torque range is 50 nm to 5000 nm.


2, the model definition method is as follows: the output speed is expressed in Arabic numerals, the unit is r/min, the output torque is divided by ten Newton meters, the model is expressed in letters.


3, ball valve specifications: floating, fixed, elastic ball and so on. The floating type adopts the ball floating mode under the action of liquid pressure, so that the ball valve can produce displacable energy, pressing the seal of the outlet end face. Fixed on the ball using a fixed way, under the liquid pressure can not be displaced, fixed ball is equipped with a floating seat, to ensure that the seat after compression move, so that the sealing ring and ball closely connected to ensure sealing. The elastic ball is made of metal for the sealing ring of the ball and the seat, forcing the sealing ratio to become larger, so only rely on the pressure of the flowing liquid itself to achieve the non-sealing requirements must apply external forces.

Fourth, the range of product use

1, electric screw ball valve is usually used for three-phase AC 380 volts, rated frequency 50 Hz control circuit. The operating environment temperature should be between -20 degrees Celsius and 60 degrees Celsius. Special products are required to expand the operating temperature range.


2. The altitude of the application site shall not exceed two kilometers, and there shall be no corrosive and explosive gases in the ambient air.


3, product fluid medium range: air steam, petroleum, petrochemical and corrosive water gas, etc.

Fifth, technical parameters and appearance size

　　

Product dimensions


Note: The above size is for reference only, the specific size is based on physical objects.


Notice to quotation:


1, valve body parameters: caliber, working pressure, valve body material, using medium, connection form and other parameters


2, actuator: actuator form, control mode, control signal (4-20MA)


Please try to provide detailed parameters about each standard pneumatic ball valve, to facilitate our technical personnel for your accurate selection.