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What details should be paid attention to when buying a ball valve?

Views: 249     Author: Site Editor     Publish Time: 2021-09-27      Origin: Site


The ball valve came out in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, in a short time, it has rapidly developed into a major valve category. Ball valves can be divided into floating ball valves, fixed ball valves, orbital ball valves, V-shaped ball valves, three-way ball valves, stainless steel ball valves, pneumatic ball valves, electric ball valves, etc. What should we pay attention to when buying ball valves?



82-1 three-way ball valves

Precautions for buying ball valves

1. Material of stem

The valve stem is a small rod connecting the handle and the valve body. The stem may seem insignificant, but in fact it also greatly affects the life of the ball valve. The valve stem is mainly made of iron rod and copper rod. The iron rod material is more corrosive and easily reacts with water and air, while the copper rod is not easy to react with water and be corroded.



2. The ball material of the ball valve

It is easy for most consumers to ignore the material of the ball valve ball. In fact, the material of the ball has a vital influence on the service life of the ball valve. The ball material of the ball valve is mainly divided into three types: iron ball, copper ball and stainless steel ball. Stainless steel balls have the best quality and iron balls have the worst quality.

Under normal circumstances, the surface of the sphere is chrome-plated, so it is difficult for consumers to distinguish the material of the sphere from the surface. It is best not to use iron balls for gas, because iron balls chemically react with water vapor, which is the easiest to be corroded, and it is also very unsafe.



82-2 stainless steel ball valves

3. The wall thickness of the ball valve

Many consumers attach great importance to the wall thickness of the ball valve. Most people mistake the thread thickness for the wall thickness of the ball valve. In fact, this concept is wrong. Many inferior ball valves have a very thick thread wall thickness, but in fact the wall thickness is far below the national standard. The most likely problem is that the ball valve bursts. The real wall thickness is the thickness of the valve body where the ball sits. Therefore, consumers should not only pay attention to the thread wall thickness when buying a ball valve, but should pay attention to the real wall thickness.



4. Packing of ball valve

Packing is a material used to seal ball valves. Although the amount of packing used in ball valves is small, it is indeed an indispensable material for sealing ball valves. The quality of the packing has a great influence on the sealing performance of the ball valve. In order to reduce costs, some businesses will use ordinary plastics as fillers, but ordinary plastics have poor sealing properties and are not environmentally friendly, which can easily cause water leakage.



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