Ball Valve researchers point to a spherical ball-type valve patented in 1871 led to the invention of today’s ball valve. This ball valve was an all brass valve- brass ball and brass seats. Apparently this ball valve didn’t storm the market and was not mentioned in valve catalogs of the late 1800’s While today’s ball valve is quite a recent invention, the idea for this ball valve has been around about 125 years. The first resilient seated ball valve patent was issued in April,1945. Legend has it the company’s marketing department could not envision a use for the valve and it was not manufactured. Oh well, that’s the way the ball valve bounces-Given the huge reliance on the ball valve today, it’s a mystery why it took so long for people to invent and use the ball valve.

Inside the valve, there is a ball that has a port, which is actually a hole at the middle. When this hole is aligned with both valve ends, liquid can flow easily through it. After the valve has been closed, the hole becomes perpendicular to the valve ends impeding the flow of liquid.

Lots of different industries make use of ball valves in order to control fluid. Some of these industries are oil and gas manufacturers, chemical and petrochemical manufacturers, paper manufacturers, the textile manufacturing, power plants, steel manufacturers, pharmaceuticals processing and water and sewage plants.

There are two types of ball valves: the full port and the standard port. A full port ball valve makes use of an oversize ball in order to allow unrestricted flow. The size of the ball and the pipeline are identical, so this has a lower loss of friction. A standard port, on the other hand, has a slightly controlled flow and makes use of a smaller ball. This ball is smaller than the pipeline, and it also has a smaller port. The valve’s pipe is one pipe size bigger than the standard port in which the liquid flows.The news come from http://www.bossgoo.com/