valve is a backbone of Pipe. A small device which can circulate or control the flow of fluids between pipes is called valve. Valves are used in everyday life, sometime they work at a center of pipe; while in other ways they tights the pressure of gases. Valves have different varieties because of their size and measurement. Valves are widely used for home appliances to healthcare supplies. In some manners industries used valves for sewerage of wastage, while giant tankers are used valves for pressure flow of water, gases and oils. After the modernizing of Chinese industries, Chinese suppliers and manufacturers make valves more effective and more reliable as compared to their previous ages. We can say that history of modern valves is revived by Chinese.
In starting valves were made up of steel and brass, but today Plastic, Fibers, Aluminum and Rubbers are also used in valve making industry. The technology of fiber and fiber optics made it possible to use valves as a medical or health supply, cannula is great example. Plastic valves are used in household sewerage, drainage and water pipes to control or circulate the flow of water, these valves are also called PVC valves.
A small valve could be a combination of many metal and rubber parts. Simply valves are made up of some rubber gaskets, seals, metal or plastic skeleton or body, stopper, ball, bolt, nuts, spring and weight. Valves should be leak-free, shock-proof (if electrical), pressure adjuster and tight with pipe. Giant valves are used at the electrical pumps under big industries to control the flow or pressure of chemicals. Valves are sized by the pipes and tubes, for example ⅔ valve is used in ⅔ pipe.
Some common types of valves are Air Valves, Alloy Valves, Ball Valves, Butterfly Valves, Compressor Valves, Control Valves, Disc Valves, Fuel Valves, Gas Valves, Hydraulic Valves, Needle Valves, Oil Valves, Pharmaceutical Valves, Piston Valves, Pneumatic Valves, Rubber Valves, Servo Valves and Vacuum Valves etc.
As China is the biggest valves provider in the world. Annual revenue of China’s major Valves Technology from valves is about $ 183,696,126 in 2010 and $ 95,370,012 in year 2009 respectively. Below the small table shows the annual revenue from each type of valve, report produced by industry on yahoo finance.
Year Ended On Dec 31st. Data in Thousand US dollars.
Valve Types | 2010 | 2009 |
Gate Valve | $ 32,771 | $ 26,559 |
Check Valves | 9,778 | 6,840 |
Globe Valves | 8,037 | 5,073 |
Safety Valves | 2,307 | 1,915 |
Butterfly Valves | 77,213 | 36,998 |
Ball Valves | 30,447 | 5,960 |
Vent Valves | 487 | 325 |
Other Valves | 22,626 | 11,700 |
Total Sales Revenue | $ 183,696,126 | $ 95,370,012 |
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