A valve is a device that blocks a pipe either partially or completely to change the amount of fluid that passes through it
. Valvesare the most important part of every engine, so due care must be taken in selection and maintenance of valve. The industrial valves are sophisticated and designed keeping various industry specifications in mind. A manual valve controls fluid flow in a piping system. These valves are operated by hand with levers and gear operators. There are many different types of valves are used to control the flow of fluids, the basic valve types can be divided into two groups: stop valves and check valves.
Check Valves are made of plastic or metal that is installed in pipeline systems to allow flow in one direction only. The valve can be completely immersed in water for cleaning--the only parts involved for disassembly are the spring and plunger. These are mainly used for protection of any item of equipment that can be affected by reverse flow, such as flow meters, strainers and control valves. Ball valves offer very good shut-off capabilities and are handy because opening and closing the valve is as simple as turning the handle 90.
The Ball Valves makes use of a ring-shaped soft seated valve seat. Most of these industrial valves are fitted with actuators that automatically control the flow of fluids. The mechanics of check valve operation are not complicated. Valves are designed and manufactured to customer specifications and requirements. Gate valves provide optimum performance in conditions where high flow efficiency, tight shut off and long service is required. Gate valves are by far the most widely used in industrial piping.
Gate-valves differ from stop-valves in as much as they control the flow of water through them, not with a washered valve, but by means of a metal plate or gate. There are so many Valves UK manufacturing companies. Depending on their form and function, they are categorized.