T001 Automatic temperature control valve
Ball valves are divided into: floating ball valve, fixed ball valve, orbital ball valve, V-shaped ball valve, three-way ball valve, stainless steel ball valve, cast steel ball valve, forged steel ball valve, ash unloading ball valve, anti-sulfur ball valve, pneumatic ball valve, electric ball valve, card sleeve Ball valves, welded ball valves.
According to the classification of shell/body material, ball valves can be divided into:
1. Metal material valves: such as carbon steel valves, alloy steel valves, stainless steel valves, cast iron valves, titanium alloy valves, Monel valves, copper alloy valves
Doors, aluminum alloy valves, lead alloy valves, etc.
2. Metal valve body lining valves: such as rubber-lined valves, fluorine-lined valves, lead-lined valves, plastic-lined valves, and enamel-lined valves.
3. Valves of non-metallic materials: such as ceramic valves, glass valves, and plastic valves.
There are many domestic manufacturers of ball valves, and most of them are not uniform in connection size. Mainly divided into the following categories:
The ball of the ball valve is floating. Under the action of the medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the seal of the outlet end.
The structure of the ball valve:
The sealing performance is good, but all the load of the sphere bearing the working medium 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 sphere medium. When subjected to higher pressure impact, the sphere may deviate . This structure is generally used for medium and low pressure ball valves.
The ball of the ball valve is fixed and does not move after being pressed. The fixed ball valve has a floating valve seat. After receiving the pressure of the medium, the valve seat will move, so that the sealing ring is pressed tightly on the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the sphere, and the operating torque is small, which is 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, the oil-sealed ball valve appeared again, which not only injects a special lubricant between the sealing surfaces to form an oil film, which enhances the sealing performance and reduces the operating torque. Suitable for high pressure and large diameter ball valves.
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