In terms of action mode, the gate valve is a straight travel valve, that is, the valve stem drives the valve plate to make vertical movement up and down to complete the opening and closing of the gate valve, so the flow resistance of the gate valve is small. However, because of its high opening height, the opening and closing speed is slow. The pneumatic butterfly valve is an angle travel valve, that is, the valve plate of the butterfly valve rotates 90 ° around the valve axis to complete the opening and closing of the butterfly valve. Therefore, the opening height of the butterfly valve is only one fourth of the channel diameter, so it can be opened and closed quickly. According to the function and purpose of the gate valve and butterfly valve, the gate valve has small flow resistance and good sealing performance. Because the gate valve plate and the medium flow direction are vertical angles, if the gate valve is not in place on the valve plate, the flushing of the medium on the valve plate will make the valve plate vibrate, which is very easy to damage the seal of the gate valve.

What are the common scales for pneumatic butterfly valves
What are the common names of pneumatic butterfly valves? This is to understand the customer's application habits and the application scope of the product Metal soft connection: since the product has the function of connecting the pipeline to reduce vibration and noise, white steel hose: white steel is a general term for stainless steel, and the combination of corrugated pipe and mesh sleeve also belongs to the hose Stainless steel hose: much the same as white steel hose
Corrugated pneumatic butterfly valve: inside the mesh sleeve is the corrugated pipe, which is also called tube blank 304 white steel hose in our jargon: a brand most commonly used in stainless steel data, which is highly resistant to high temperature acid and alkali corrosion, and is very suitable. In addition to the above, there are also some quick coupling methods, such as connection methods based on performance, application environment, etc., which are lined with tetrafluoroethylene, large diameter, threaded connection, and flange, Forming Record of Metal Bellows of Pneumatic Butterfly Valves for Distillery (I)
The hydraulic processing of corrugated pneumatic butterfly valve is a process method for forming annular bellows with rectangular, circular, elliptical, runway shaped sections.
After adjusting the position of the die and the tube blank, pressurize the inner cavity of the tube blank, and then stop the mechanical tightening along its axial direction, and a corrugated pipe will be formed soon. This is a method of hydraulic forming, called multi wave one-time forming method. This processing method is often used for bellows commonly used as elastic elements. But for the bellows of the pneumatic butterfly valve itself, this method will not work. Since there are many requests for bellows in pneumatic butterfly valves, such as length, etc., people have invented another method of hydraulic forming, "single wave continuous forming method". It can continuously form tens, hundreds, even thousands, tens of thousands of corrugations when the tube blank length allows. When used, it can be cut according to the required length or the required number of corrugations. In this sense, it can replace multi wave one-time forming machine tools. Only by changing molds of different specifications, you can consume multi-functional equipment of different specifications, which is the key equipment of the consumption line. It also greatly saves manufacturing time and materials.