How does the manufacturer of pneumatic butterfly valve deal with the noise problem of old cars? Pneumatic butterfly valve is a good choice! I will analyze the cause of noise for you!
Exhaust pipe noise: it belongs to the category of normal aging. For the exhaust pipe with a length of 10 years or 200000 km, the noise at the rear of the car body will be increased because the bottom of the car body is often exposed to acid and alkali mixture such as mud and water, or there is the possibility of air leakage due to corrosion, which can be heard clearly. The treatment method is to replace the whole or local exhaust pipe, and the noise can be eliminated immediately.
Noise of engine and its accessories: This is caused by normal wear of internal components of the engine due to age. If there has been an abnormal accident before, for example, the engine oil has leaked out and has not been found in time, or the antifreeze has leaked out. The engine with such experience will be more noisy, and its noise will be different regardless of the size of the accident. The treatment is to replace partial or all engine moving parts, such as connecting rod, connecting rod bush, piston and piston ring. It is also caused by incorrect or worn accessories such as some belts outside the engine.
Brake system noise: if the brake pads continue to be used after normal wear, the brake shoes will easily rub the brake disc (that is, the phenomenon of iron hitting the iron), which will cause a very harsh squeal when braking. The treatment is to change the brake pads (if the brake disc is worn, it should also be changed).
Noise of suspension system: although it belongs to the normal aging category, different users will have significantly different results. A large part is caused by the wear of hub bearings or the reduction of damping ability of damping fluid in pneumatic butterfly valves. There are also many examples of light leakage of shock absorber fluid. Since the shock absorption performance of the car depends on the combination of damping fluid and spring, the loss of damping fluid talent will significantly increase the noise. The treatment is to go to the car shop for repair, replace the hub bearing or pneumatic butterfly valve, etc.

Color of stainless steel pneumatic butterfly valve
I'm afraid the stainless steel products that everyone first came into contact with were stainless steel tableware. We all know that their color is bright. Some flat stainless steel can even be used as mirrors.
Are all stainless steel products bright in color? Neither.
Some customers think that the color of stainless steel pneumatic butterfly valve should be relatively bright. In fact, we will find that some types of stainless steel pneumatic butterfly valves are snow white or even dark silver gray. For example, 316L stainless steel corrugated pipe is not bright in snow white color.
I once thought that the bright color of 304 stainless steel pneumatic butterfly valve is the way to distinguish 304 from 201 pneumatic butterfly valve made of ordinary material. Later, I learned that some 201 pneumatic butterfly valves have bright colors, while some 304 pneumatic butterfly valves have dark colors. In fact, the bright color of stainless steel pneumatic butterfly valves is mainly due to the use of electroplating or polishing, while some 304 stainless steel pneumatic butterfly valves will reduce their luster due to manufacturing processes, such as pickling, but the acid and alkali resistance will not be affected.