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Pneumatic valve classification
Pneumatic valve wide range of uses, a wide range of classification methods are more. The total can be divided into two categories: The first type of automatic valve: relying on the media (liquid, gas) their own ability to operate the valve. Such as check valve, safety valve, regulating valve, steam trap, pressure reducing valve. The second type of drive valve: With manual, electric, hydraulic, pneumatic to manipulate the action of the valve. Such as valve, globe valve, throttle, butterfly valve, ball valve, plug valve. In addition, the valve classification there are several ways: First, according to the structural features, according to the closure of the valve seat relative to the direction of movement can be divided: 1. Sectional shape: The closure moves along the center of the seat, as shown in Figure 1-1. 2. Gates: Closure moves along the vertical seat center, as shown in Figure 1-2. 3. Tap and Sphere: The closure is a plunger or ball that rotates about its centerline as shown in Figure 1-3. 4. Turn-on; the closing piece rotates around the axis outside the seat, as shown in Figure 1-4. 5. DISC: Discs that close the part and rotate around the inside of the valve seat, as shown in Figure 1-5. 6. Slide valve: Closure slide in a direction perpendicular to the passage, as shown in Figure 1-6. Second, according to use, according to the different purposes of the valve can be divided: 1. Broken with: used to connect or cut off the pipeline medium, such as globe valve, gate valve, ball valve, butterfly valve. 2. Non-return: used to prevent media backflow, such as check valve. 3. Adjustment: used to regulate the medium pressure and flow, such as regulating valve, pressure reducing valve. 4. Distribution: used to change the media flow, distribution of media, such as three-way cock, distribution valve, slide valve. 5. Safety valve: When the medium pressure exceeds the specified value, it is used to discharge excess medium to ensure the safety of piping system and equipment, such as safety valve and accident valve. 6. His special purposes: such as steam traps, venting valves, sewage valves. Search Keyword: Jiuding Automatic Control Equipment Co., Ltd.