Electric double acting ball valve

Product Overview Electric flange ball valves are mainly used to cut off or connect medium in pipelines, and can also be used for fluid regulation and control. Compared with other valve types, they have the following advantages. 1. Low fluid resistance. Ball valves have the smallest fluid resistance among all valve types, and even for reduced diameter ball valves, their fluid resistance is relatively small. 2. The thrust bearing reduces the friction torque of the valve stem, which can make the valve stem balance and flexible for long-term operation. 3. The valve seat has good sealing performance, using sealing rings made of materials such as polytetrafluoroethylene, which are easy to seal in structure. Moreover, the sealing capacity of the ball valve increases with the increase of medium pressure. 4. The valve stem seal is reliable. As the valve stem only rotates without lifting, the packing seal of the valve stem is not easily damaged, and the sealing capacity increases with the increase of medium pressure. 5. Due to the good self-lubrication of materials such as polytetrafluoroethylene, the friction loss with the ball is small, and the service life of the ball valve is long. 6. The bottom mounted valve stem and the convex step of the valve stem head prevent the valve stem from spraying out. If a fire causes damage to the valve stem seal, metal contact can also be formed between the convex step and the valve body to ensure the valve stem seal. Electric ball valve is a rotating valve with a 90 ° angle, with excellent sealing performance, large flow coefficient, small flow resistance coefficient, simple structure, long service life, and easy maintenance. Equipped with electric cylinder type actuator. The product is widely used in system control in the chemical, petroleum, light textile, electric power, food and pharmaceutical, refrigeration, and paper industries.

Item NO.:
XUVAL33-249
Lead Time:
30 Days
Brand:
XUVAL
Shipping Port:
Shanghai
Payment:
100%TT
MOQ:
5

Products Details

Precautions:

1: Please make sure to connect the power phase sequence correctly to avoid damage to the valve or actuator.

2: Manual operation is prohibited when powered on.

3: It is best to add a protective cover to the electric actuator for outdoor use to prevent aging.

4: After opening the cover, tighten the screws tightly to prevent water or dust from entering the interior of the electric actuator.

5: Please do not install around explosive gases. If explosion-proof ordering is required, please explain.

6: Please confirm if the input voltage and wiring contacts are correct.

7: Overloading the use of electric actuators is prohibited.

Note: Electric actuators can be selected as switch type, adjustable type, and explosion-proof type

The types of electric ball valves include: floating ball valve, fixed ball valve, track ball valve, V-shaped ball valve, three-way ball valve, stainless steel ball valve, forged steel ball valve, ash unloading ball valve, sulfur resistant ball valve, three-way ball valve, pneumatic ball valve, electric ball valve, sleeve ball valve, welding ball valve, flange ball valve, and threaded ball valve.

Floating ball: The ball of a ball valve is floating, and under the pressure of the medium, the ball can produce a certain displacement and tightly press on the sealing surface of the outlet end, ensuring the sealing of the outlet end. The floating ball valve has a simple structure and good sealing performance, but the ball bears all the load of the working medium and is transmitted to the outlet sealing ring. Therefore, it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. When subjected to high pressure impact, the ball may deviate. This structure is generally used for medium and low pressure ball valves.

Fixed ball: The ball of a ball valve is fixed and does not move under pressure. Fixed ball valves are equipped with floating valve seats, which move when subjected to medium pressure, causing the sealing ring to tightly press against the ball to ensure sealing. Usually, bearings are installed on the upper and lower shafts of the ball, with small operating torque, suitable for high-pressure and large-diameter valves. In order to reduce the operating torque of ball valves and increase the reliability of sealing, lubricating oil is used to form a layer of oil film, which enhances sealing performance and reduces operating torque, making it more suitable for high-pressure large-diameter ball valves.

Elastic ball: The ball of a ball valve is elastic. Both the ball and valve seat sealing rings are made of metal materials, with a high sealing pressure ratio. The pressure of the medium itself cannot meet the sealing requirements, and external forces must be applied. This valve is suitable for high-temperature and high-pressure media. An elastic sphere is achieved by opening an elastic groove at the lower end of the inner wall of the sphere. When closing the channel, use the wedge-shaped head of the valve stem to expand the ball and compress the valve seat to achieve sealing. Before rotating the ball, loosen the wedge head first, and the ball will return to its original shape, creating a small gap between the ball and the valve seat, which can reduce the friction and operating torque of the sealing surface.

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