How to connect the pneumatic wafer type metal hard seal butterfly valve zdkw-6k dn550 to the gas pipe? An elastic sphere obtains elasticity by opening an elastic groove at the lower end of the inner wall of the sphere. When the channel is closed, use the wedge head of the valve rod to expand the ball and compress the valve seat until it is sealed. Loosen the wedge head before rolling the ball, and then the ball will return to its original shape, making a small gap between the ball and the valve seat, which can reduce the conflict and operating torque of the sealing surface.
、 The service life of metal valve is much longer than that of elastic valve. If it is used in large-scale industry, it is better to choose metal pneumatic butterfly valve. Of course, the size and type of pneumatic butterfly valve should also be paid attention to. There are two kinds of pneumatic butterfly valves that are often used, including clip type and flange type. Each has its own characteristics. The selection mainly depends on which aspect is used.
Previous: Pneumatic transmission flange expansion butterfly valve 1600 electric two-way valve butterfly valve
Next: Pneumatic injection type metal seal butterfly valve cannot be opened when it is half opened
