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Introduction of ball valve
by：AIRWOLF
2021-01-20
According to the classification of valve core structure, ball valve and ball valve can be divided into O V type ball valve of the
sphere and seal installation method according to the valve core, o-type ball valve floating ball valve and the fixed ball valve divides into two kinds.
1. Core ball valve floating ball valve with the valve stem between two seat sealing free rotation.
2. Fixed ball valve ball valve core and valve rod connected together, and rotate at the center of the valve stem, with floating sum elastic sleeve seat ball valve.
O type ball valve can adjust the role and cutting off, often used in the two type control, known as the switch ball valve, its main characteristics are as follows:
1. Compact structure, light weight, small volume.
2. The ball hole and pipeline on time, big flow area, small flow resistance, Kv value is big.
3. Large range of flow control, adjustable ratio of 100:1 ~ 200:1
4. Can be completely sealed shut off.
the structure of the v-shaped ball valve? It is a regulation principle?
V type ball valve structure is equivalent to the fixed ball ball valve on the valve core to open V mouth, use the area of the rotation and seat cut open the ball core to regulate traffic, the control performance is good in ball valve.
what is the main characteristic of v-shaped ball valve?
1. Provide approximate logarithmic flow characteristic of regulating characteristics.
2. V-shaped ball valve core and valve seat when the relative rotation shearing action, especially suitable for the paper pulp is not clean, such as the regulation of fiber media, cut off, and is suitable for high viscosity, suspension occasions.
3. In under the action of pressure difference, the valve core is pressed to the side of the seat, the seat of compaction force increases the friction spinning the valve core. A friction, so differential pressure mainly produce actuators overcome the friction force is relatively easier, so the ball valve to cut off the pressure difference is bigger.
4. Ball valve seat and valve core, won't produce the problem such as jam cargo from between reliable sealing, long service life.
eccentric rotary valve sealing principle is what?
eccentric rotary valve CAM flexure valve, also known as the 1970 s the development of new varieties, its working principle is a fan of eccentric rotating ball valve, using eccentric spherical cap and seat tangent: opens, ball core from the seat, closing new contact seat, step by step the ball clamp force on the seat.
what is the characteristics of eccentric rotating valve?
characteristics are as follows:
1. Spherical pressure valve seat, easy to crystallization, scarring destruction, is suitable for the crystallization, scarring and not clean medium.
2. Flow is simple, Kv value is big, good self-cleaning performance.
3. The body is small volume, light weight.
4. Proportional control, enforcement agencies need to bring the locator, if only two control, its advantage more prominent.
5. Seal form has a hard seal, soft seal for selection.
sphere and seal installation method according to the valve core, o-type ball valve floating ball valve and the fixed ball valve divides into two kinds.
1. Core ball valve floating ball valve with the valve stem between two seat sealing free rotation.
2. Fixed ball valve ball valve core and valve rod connected together, and rotate at the center of the valve stem, with floating sum elastic sleeve seat ball valve.
O type ball valve can adjust the role and cutting off, often used in the two type control, known as the switch ball valve, its main characteristics are as follows:
1. Compact structure, light weight, small volume.
2. The ball hole and pipeline on time, big flow area, small flow resistance, Kv value is big.
3. Large range of flow control, adjustable ratio of 100:1 ~ 200:1
4. Can be completely sealed shut off.
the structure of the v-shaped ball valve? It is a regulation principle?
V type ball valve structure is equivalent to the fixed ball ball valve on the valve core to open V mouth, use the area of the rotation and seat cut open the ball core to regulate traffic, the control performance is good in ball valve.
what is the main characteristic of v-shaped ball valve?
1. Provide approximate logarithmic flow characteristic of regulating characteristics.
2. V-shaped ball valve core and valve seat when the relative rotation shearing action, especially suitable for the paper pulp is not clean, such as the regulation of fiber media, cut off, and is suitable for high viscosity, suspension occasions.
3. In under the action of pressure difference, the valve core is pressed to the side of the seat, the seat of compaction force increases the friction spinning the valve core. A friction, so differential pressure mainly produce actuators overcome the friction force is relatively easier, so the ball valve to cut off the pressure difference is bigger.
4. Ball valve seat and valve core, won't produce the problem such as jam cargo from between reliable sealing, long service life.
eccentric rotary valve sealing principle is what?
eccentric rotary valve CAM flexure valve, also known as the 1970 s the development of new varieties, its working principle is a fan of eccentric rotating ball valve, using eccentric spherical cap and seat tangent: opens, ball core from the seat, closing new contact seat, step by step the ball clamp force on the seat.
what is the characteristics of eccentric rotating valve?
characteristics are as follows:
1. Spherical pressure valve seat, easy to crystallization, scarring destruction, is suitable for the crystallization, scarring and not clean medium.
2. Flow is simple, Kv value is big, good self-cleaning performance.
3. The body is small volume, light weight.
4. Proportional control, enforcement agencies need to bring the locator, if only two control, its advantage more prominent.
5. Seal form has a hard seal, soft seal for selection.
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