Valve classification
Date:2019-05-14 Click:4364
Valves are used in a wide variety of applications and in a variety of classification methods. The total can be divided into two categories:
The first type of automatic valve: a valve that acts on its own depending on the ability of the medium (liquid, gas) itself. Such as check valves,
Safety valves, regulating valves, traps, pressure reducing valves, etc.
The second type of drive valve: the valve operated by manual, electric, hydraulic, pneumatic. Such as gate valve, globe valve,
Throttle valves, butterfly valves, ball valves, plug valves, etc.
In addition, there are several methods for classifying valves:
1. According to the structural characteristics, according to the direction in which the closing member moves relative to the valve seat:
1. Truncated: The closure moves along the center of the seat, as shown in Figure 1-1.
2. Gate shape: The closing member moves along the center of the vertical valve seat, as shown in Figure 1-2.
3. Plug and Sphere: The closure is a plunger or ball that rotates around its centerline, as shown in Figure 1-3.
4. Rotating shape; the closing member rotates around the axis outside the seat, as shown in Figure 1-4.
5. Dish shape: The disc of the closing piece rotates around the axis inside the valve seat, as shown in Figure 1-5.
6. Spool shape: The closing member slides in the direction perpendicular to the channel, as shown in Figure 1-6.
Second, according to the purpose, according to the different uses of the valve can be divided:
1. Breaking: Used to turn on or off the pipeline medium, such as shut-off valve, gate valve, ball valve, butterfly valve, etc.
2. Non-return: Used to prevent backflow of media, such as check valves.
3. Adjustment: used to regulate the pressure and flow of the medium, such as regulating valves and pressure reducing valves.
4. Distribution: used to change the flow direction of the medium, distribution medium, such as three-way cock, distribution valve, spool valve.
5. Safety valve: used to discharge excess medium when the medium pressure exceeds the specified value, to ensure the piping system and equipment
Safety, such as safety valves and accident valves.
The first type of automatic valve: a valve that acts on its own depending on the ability of the medium (liquid, gas) itself. Such as check valves,
Safety valves, regulating valves, traps, pressure reducing valves, etc.
The second type of drive valve: the valve operated by manual, electric, hydraulic, pneumatic. Such as gate valve, globe valve,
Throttle valves, butterfly valves, ball valves, plug valves, etc.
In addition, there are several methods for classifying valves:
1. According to the structural characteristics, according to the direction in which the closing member moves relative to the valve seat:
1. Truncated: The closure moves along the center of the seat, as shown in Figure 1-1.
2. Gate shape: The closing member moves along the center of the vertical valve seat, as shown in Figure 1-2.
3. Plug and Sphere: The closure is a plunger or ball that rotates around its centerline, as shown in Figure 1-3.
4. Rotating shape; the closing member rotates around the axis outside the seat, as shown in Figure 1-4.
5. Dish shape: The disc of the closing piece rotates around the axis inside the valve seat, as shown in Figure 1-5.
6. Spool shape: The closing member slides in the direction perpendicular to the channel, as shown in Figure 1-6.
Second, according to the purpose, according to the different uses of the valve can be divided:
1. Breaking: Used to turn on or off the pipeline medium, such as shut-off valve, gate valve, ball valve, butterfly valve, etc.
2. Non-return: Used to prevent backflow of media, such as check valves.
3. Adjustment: used to regulate the pressure and flow of the medium, such as regulating valves and pressure reducing valves.
4. Distribution: used to change the flow direction of the medium, distribution medium, such as three-way cock, distribution valve, spool valve.
5. Safety valve: used to discharge excess medium when the medium pressure exceeds the specified value, to ensure the piping system and equipment
Safety, such as safety valves and accident valves.
6. His special purposes: such as traps, vent valves, drain valves and so on.