Dongfeng taught you to choose the best pneumatic butterfly valve?
The shock absorber industry is developing rapidly, and many manufacturers have participated in it, which has further promoted the prosperity of the pneumatic butterfly valve industry. But behind the prosperity, there are still some unknown places. For example, you can directly harm the interests of customers by consuming inferior products in many manufacturers. Today, Dongfeng Xizhen pneumatic butterfly valve will share several methods for selecting pneumatic butterfly valve:
First, look at the housing
The shell is the supporting part of the damping element. The load throughout the year and the safety are very important. It has a high demand for strength. At present, there are two tendencies in the market to mislead customers:
1. In order to raise the price of the shock absorber, the shock absorber is equipped with a shell that is beyond the normal request. For example, a large frame with a small ball valve is very funny. The customer may pay several times more than the normal price for this, which greatly increases the project cost.
2. First, in order to reduce the cost, the shell is particularly thin, for example, thick, which obviously cannot pass the tensile test without deformation. It can be directly identified as unqualified products.
Second, check the ball valve
1. Whether the two ends of the ball valve can be tightly polished will affect the stability of the shock absorber.
2. The national standard asks that the tightening amount of the shock absorber is, which can ensure that the natural vibration frequency of the shock absorber is low enough to ensure the damping effect.
3. In order to save money and meet the demand of load, some manufacturers will make the ball valve very stiff, and the ball valve will shrink little on the nominal load.
According to this standard, most shock absorbers on the market are unqualified. Customers must pay attention to the shrinkage of ball valves when purchasing.
Third, look at surface treatment
1. Check the disposal of shock absorber surface and ball valve surface, and whether the paint can peel off,
2. Whether the electric welding is smooth and whether there is slag inclusion.
3. Whether there is peculiar smell in spray paint, and poor quality paint has irritating smell, which is highly toxic. Indoor installation will pose long-term harm to human body.
Finally, Dongfeng Xizhen pneumatic butterfly valve reminds everyone that when purchasing pneumatic butterfly valve, we must go to the manufacturers and institutions on the right track, so as not to pose a personal and wealth threat.
If you are interested in our pneumatic butterfly valve, you can contact us at any time and wait for your call.