Introduction and Characteristic of Electric Control Ball Valve

July 27, 2022

Equipment introduction: Electric Ball Valve structure brief, only composed of a few parts, data consumption; small volume, light weight, small installation size, small drive torque, pressure control valve, easy, rotating 90 and quick open and close; and also has good flow regulation effect and closed sealing characteristics, in large and medium caliber, low pressure application category, electric ball valve is the leading valve situation. When the electric ball valve is in a full open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop occurring through the valve is very small, so it has a good flow holding characteristics. The Ball Valve Electric has elastic seal and metal seal type. Elastic seal valve, seal ring can be embedded on the valve body or attached to the butterfly plate periphery. Valves with metal seals generally last longer than elastic seals, but it is difficult to achieve a complete seal. Metal seal can adapt to high working temperature, while elastic seal has the disadvantage of temperature limitation. If the electric ball valve is requested as a flow control, it is important to accurately select the size and type of the valve. The construction principle of electric ball valve is especially suitable for manufacturing large diameter valves. Electric Control Ball Valve is not only widely used in oil, gas, chemical industry, water disposal and other general industries, but also used in the cooling water system of thermal power station. There are two electric ball valve: clip electric ball valve and Flange Ball Valve . The clamp electric ball valve is connected between two pipe flanges, flange electric ball valve with flange, and bolts to connect the two flanges on the valve to the pipe flange. The strength performance of the valve refers to the ability of the valve under the medium pressure. Electric Valve are mechanical products under internal pressure, and therefore must have sufficient strength and stiffness to ensure long-term use without breaking or deformation.

Function is a kind of pipe pressure element of industrial automation process control, usually used for pipeline media remote open, off (on, off media) control.

Operating temperature: -20℃ to + 150℃ (+ 250℃ special seal).

Working pressure: PN16, PN25-PN40-PN64-PN100

Scope: Air, steam, water, gas, petroleum and petrochemical products, corrosive media.

Electric ball valve: V-type electric ball valve is a kind of core valve seat using metal, or metal FE seal matching rotary ball valve, electric ball valve combines the best control characteristics of the ball valve and butterfly valve, can be used as a control valve, and shut-off valve. Its main features are as follows:

(1) The integral valve body without any pipe joint, so it is not affected by the pipe or bolt stress, and because the valve body does not have any pipe joint, so the pressure-resistant housing will not be affected by the pressure "mutation";

(2) The electric ball valve has a V-type valve body, even in the case of small flow rate or high viscosity medium, it can also be in the whole range range, to ensure the accuracy of control;

(3) The Stainless Steel Ball Valve for leakage prevention The durable valve seat is lined with stainless steel inner core PTFE cup or O-shaped seal at its outer diameter. The valve seat is made of tungsten and cobalt carbide with a large section, and the structure of the valve seat is further enhanced by an alloy corrugated spring;

(4) When the electric ball valve valve is closed, a wedge-shaped shear effect is generated between the V-type gap and the electric ball valve valve seat, and it has both self-cleaning function to prevent the ball core from getting stuck. The electric ball valve is especially suitable for pipeline scale and freezing or containing fiber and granular solids.

Remarkable features of the Electric Ball Valve:

1. The thrust bearing reduces the friction moment of the valve rod to make the long-term operation of the valve rod stable and flexible.

2. Anti-static function: set the spring between the sphere, valve stem and valve body to export the static electricity generated by the switching process.

3. Due to the good self-lubrication of PVC and other materials, and the small friction loss with the ball, the service life of the ball valve is long.

4. The convex steps of the lower mounted valve stem and stem head prevent the valve stem ejection. If the valve stem seal is caused by fire, metal contact can be formed between the valve step and the valve body to ensure that the valve stem is sealed.

5, Small fluid resistance, the ball valve is the smallest fluid resistance among all valves, even the shrinkage ball valve, its fluid resistance is quite small.

6. The valve seat has good sealing performance, using the sealing ring made of elastic materials such as PVC and other elastic materials, the structure is easy to seal, and the valve sealing capacity of the ball valve increases with the increase of the medium pressure.

7. The sealing of the valve stem is reliable. Because the valve stem is only rotated and does not lift the movement, the packing seal of the valve stem is not easy to destroy, and the sealing capacity increases with the increasing pressure of the medium.

Technical parameters: electric device working environment: ordinary type without corrosive explosive gas relative temperature: 60℃ relative humidity: 90 [%] (at 25℃) altitude of 3000m power supply pressure 220 frequency 50Hz.

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Author:

Mr. Zheng

이메일:

zheng@rmiplast.com

Phone/WhatsApp:

+86 15888074637