Overview of Electric Ball Valves

Electric Ball Valves are important ^actuators  in industrial automation control systems. Electric Ball Valves are valves that rotate around the axis of the valve stem according to this moving form of the valve disc. The change of the valve seat opening is directly proportional to the valve disc stroke. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for the regulation and control of fluids, and is a kind of pipeline pressure element for industrial automation process control.
Electric ball valves are composed of an Electric Actuator (Electric Actuator) and a ball valve together to form an electric ball valve.
It is a kind of pipeline pressure element for industrial automation process control, usually used for remote opening and closing (connecting and cutting off media) control of pipeline media. The electric ball valve standard GB/T21465-2008 "Valve Terminology" defines it as a valve driven by the valve stem and rotating around the axis of the valve stem. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control, among which the hard seal V-ball valve has a strong shear force between the V-shaped ball core and the metal seat of the hard-sealed carbide, especially suitable for mediums containing fibers and tiny solid pellets. Electric ball valves are divided into electric flange ball valves, electric clamping ball valves, electric welding ball valves, and electric wire buckle ball valves. According to the sealing form, it is also divided into soft seal electric ball valve and hard seal electric ball valve.
classify
   The types of electric ball valves are: floating ball ball valves, fixed ball ball valves, orbital ball valves, V-shaped ball valves, three-way ball valves, stainless steel ball valves, forged steel ball valves, ash discharge ball valves, anti-sulfur ball valves, three-way ball valves, Pneumatic Ball Valves, electric ball valves, tubed ball valves, welded ball valves, flanged ball valves, and wire mouth ball valves.

Floating ball: The ball of the ball valve is floating, under the action of medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the sealing of the outlet end. The structure of the floating ball ball valve is simple, and the sealing is good, but the load of the ball bearing the working medium is all transmitted to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium, and the sphere may be offset when subjected to higher pressure impact. This structure is generally used for medium and low pressure ball valves.
Fixed ball: The ball of the ball valve is fixed and does not move when pressed. Fixed ball valves have a floating valve seat, and after being under the pressure of the medium, the valve seat moves, so that the sealing ring presses tightly on the sphere to ensure the seal. Usually bearings are installed on the upper and lower shafts with the sphere, and the operating torque is small, suitable for high pressure and large diameter valves. In order to reduce the operating torque of the ball valve and increase the reliability of the seal, lubrication oil is used to form an oil film, that is, it enhances the tightness and reduces the operating torque, which is more suitable for high-pressure and large-diameter ball valves.

Elastic Ball: The ball of a ball valve is elastic.
Electric ball valve structure diagram

The structure of the electric ball valve is simple, only composed of a few parts, and the data consumption is saving; Small size, light weight, small installation size, small driving torque, pressure regulating valve, easy and agile operation, only need to rotate 90° to open and close quickly; And at the same time, it also has good flow regulation efficiency and closed sealing characteristics, in the application of large and medium diameter, medium and low pressure, electric ball valve is the leading valve situation. When the electric ball valve is in a complete opening position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop through the valve is very small, so it has good flow control characteristics. Electric ball valves are available in two sealing types: elastic seal and metal seal. Elastomeric sealing valves, sealing rings can be embedded in the valve body or attached to the perimeter of the butterfly plate. Valves with metal seals generally have a longer life than valves with elastomeric seals, but it is difficult to achieve a complete seal. Metal seals can adapt to higher operating temperatures, while elastomeric seals have temperature-limited defects. If you request an electric ball valve to be used as a flow control, it is important to choose the correct size and type of valve. The construction principle of electric ball valves is particularly suitable for manufacturing large-diameter valves. Electric ball valves are not only commonly used in general industries such as oil, gas, chemical industry, and water treatment, but also in the cooling water system of thermal power stations. There are two commonly used electric ball valves: clip-on electric ball valves and flanged electric ball valves. The clip-on electric ball valve is to connect the valve between the two pipe flanges with stud bolts, and the flange electric ball valve is with a flange on the valve, and the two ends of the valve are connected to the pipe flange with bolts. The strength performance of a valve refers to the ability of the valve to be subjected to medium pressure. Valves are mechanical products subjected to internal pressure, so they must have sufficient strength and rigidity to ensure long-term use without breaking or deforming.
The function is a kind of pipeline pressure element for industrial automation process control, which is usually used for remote opening and closing (turning on and cutting off the media) control of pipeline media.

Features: Adopting an integrated structure, it can be controlled and operated with a single-phase power supply of AC220V and a DC power supply of 24VDC; It has the advantages of small size, light weight, reliable performance, simple supporting and large circulation capacity.