Share how to modify the pneumatic butterfly valve??
When using the pneumatic butterfly valve, it is not always suitable, so it needs to be modified properly. How to modify the pneumatic butterfly valve? The pneumatic butterfly valve has sorted out some methods for you, and here I would like to share with you:
In theory, the modification of pneumatic butterfly valve is to replace it with a pneumatic butterfly valve with hard damping, good quality and can fully cooperate with the spring. It is most important to select a group of suitable pneumatic butterfly valves. It is particularly difficult to achieve a compromise between warmth and controllability. A set of adjustable damping pneumatic butterfly valves can improve the applicability, especially on the changeable road. It seems that the adjustable pneumatic butterfly valve can seriously consider the effect of the compression resistance of the pneumatic butterfly valve and the hardness of the spring. A set of springs only needs one performance, and the only way to change the hardness of the spring is to change another set of springs with different elastic coefficients, The adjustable pneumatic butterfly valve can compensate for this shortcoming. The most difficult problem in the process of suspension modification is the matching of pneumatic butterfly valve and spring. If your car lowers the body by more than 2 inches or the spring hardness increases by more than 20%, you must change the spring pneumatic butterfly valve together. The hard shock absorber and the hard spring should match each other. Because the hardness of the spring is determined by the weight of the car, the heavier car needs a harder pneumatic butterfly valve. Therefore, the pneumatic butterfly valve on racing cars or high-performance cars is harder than that on ordinary cars to match with a harder spring.
If the pneumatic butterfly valve is too soft, it will form the swing of the body up and down. If it is too hard, it will form too much damping, making the spring unable to operate normally. Moreover, the damping effect of the pneumatic butterfly valve will cause the change of the vehicle height when driving. The softer spring (progressive), coupled with the harder adjustable spring, will damp the pneumatic butterfly valve to make up for the lack of spring strength with the hardness of the shock absorber, With freely adjustable damping, a high degree of road compliance is achieved. Generally speaking, a soft spring can provide better warmth and better tracking when traveling on rough roads. If the spring is very soft, it is easy to sit on the bottom, that is, to use up the suspension travel. Assuming that the bottom sitting occurs during cornering, it can be seen that the elastic coefficient of the spring becomes infinite (there is no room for contraction), and the body will produce an immediate weight transfer, which constitutes a loss of traceability. Assuming that this car has a long shock absorption travel, it may be allowed to avoid the occurrence of bottoming, but the relative body will also become very high, and a very high body means a high body center of gravity. The up and down of the body center of gravity has a decisive impact on the handling performance, so too soft pneumatic butterfly valve will cause obstacles in the handling.
This article is organized and issued by Songxia Pneumatic Butterfly Valve Co., Ltd. If you want to know more about pneumatic butterfly valves, please call 021-60344211 for details.

Welding process flow of pneumatic butterfly valve
Welding of bellows and joints
(1) Clean. Clean the joint and straight wall section of bellows with acetone.
(2) Clamping. Assemble the joint and bellows according to the drawing, install the welding fixture, and then install it on the automatic welding installation.
(3) Welding. Adjust the welding current, welding speed, hydrogen flow and other parameters according to the process requirements, adjust the welding gun in place, test run and check whether the rotating installation can run smoothly. Finally, start welding according to the operation procedure of the automatic circumferential welding machine.
(4) Inspection. After the welding of the joints at both ends of the pneumatic butterfly valve is completed, the appearance inspection and air tightness inspection shall be stopped. The mesh sleeve shall be welded after passing the inspection.
Welding of joint and net sleeve
(1) Clean. Clean the joint, mesh sleeve and outer ring to be welded with acetone.
(2) Clamping. Assemble the joint, net sleeve and outer ring according to the drawing, install the welding fixture, and then install it on the automatic welding installation.

3) Welding. Adjust the welding parameters, adjust the welding gun in place, and start welding according to the operating procedure of the automatic circumferential welding machine.
(4) Inspection. After the welding of the mesh sleeves at both ends of the pneumatic butterfly valve is completed, the air tightness inspection shall be stopped.