1. The compact and compact structure of the grooved butterfly valve reduces the working height by more than 60mm-300mm compared with the traditional gate valve, saving engineering space. The body is made of ductile iron material, which weighs about 20%-30% less than traditional gate valves, and is easy to install and maintain. When the groove butterfly valve is nearly closed, the action of the valve flap is accelerated, and the water hammer (water impact pressure) is prone to occur. When the groove butterfly valve closes, the slower the valve operation, the better. Therefore, a throttle mechanism can be arranged on the valve flap.
2. The groove butterfly valve is based on the medium pressure of the pipeline itself as the power source for opening and closing, adjustment, and different combinations of the pilot valve and the system of small pipelines, it can have nearly 30 kinds of functions, and now it is gradually used more commonly.
3. The pilot valve operates by changing the water level and pressure as the control object. Because there are many kinds of pilot valve, they can be used alone or in combination, and the main valve can be used to obtain the water level, water pressure and flow rate independently or in combination. Adjust the function. However, the main valve is similar to the cut-off valve. When the valve is fully opened, the pressure loss is much larger than that of other valves. The closer the loss coefficient of each opening is to full closure, the larger the valve diameter is, the larger the valve diameter becomes.
4. In addition, the throttling and moving parts of the pilot valve should be as small as possible to avoid setting a small orifice to avoid clogging. When necessary, filter screens should be added, and regular inspections and bypass lines should be provided. This kind of valve has good prospects for development and use.
5. The self-sealing structure design between the self-sealing bonnet valve cover and the valve body, within the allowable pressure range, the higher the fluid pressure, the tighter the seal.
6. Flat-bottomed valve seat The bottom of the company's flexible seat closure gate valve adopts a full-water basin straight-through design, which is equivalent to a straight pipeline and is not easy to accumulate debris, ensures reliable sealing, and ensures unimpeded fluid flow.
2. The groove butterfly valve is based on the medium pressure of the pipeline itself as the power source for opening and closing, adjustment, and different combinations of the pilot valve and the system of small pipelines, it can have nearly 30 kinds of functions, and now it is gradually used more commonly.
3. The pilot valve operates by changing the water level and pressure as the control object. Because there are many kinds of pilot valve, they can be used alone or in combination, and the main valve can be used to obtain the water level, water pressure and flow rate independently or in combination. Adjust the function. However, the main valve is similar to the cut-off valve. When the valve is fully opened, the pressure loss is much larger than that of other valves. The closer the loss coefficient of each opening is to full closure, the larger the valve diameter is, the larger the valve diameter becomes.
4. In addition, the throttling and moving parts of the pilot valve should be as small as possible to avoid setting a small orifice to avoid clogging. When necessary, filter screens should be added, and regular inspections and bypass lines should be provided. This kind of valve has good prospects for development and use.
5. The self-sealing structure design between the self-sealing bonnet valve cover and the valve body, within the allowable pressure range, the higher the fluid pressure, the tighter the seal.
6. Flat-bottomed valve seat The bottom of the company's flexible seat closure gate valve adopts a full-water basin straight-through design, which is equivalent to a straight pipeline and is not easy to accumulate debris, ensures reliable sealing, and ensures unimpeded fluid flow.
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