A valve is a mechanism that opens and closes to control the flow of fluids. In a scientific context, fluids include both liquids and gases .Valves control fluid flow in motors, plumbing, irrigation, pneumatic and hydraulic systems.

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups...

Gears are a very useful transmission mechanism that is used to transmit rotation from one axis to another. You can use a gear system to decrease the speed so that the output shaft rotates at half the engine speed...

Electric motors may be classified by considerations such as power source type, construction, application and type of motion output. They can be powered by AC or DC, be brushed or brushless, single-phase, two-phase..

Vacuum pumps are simply compressors that take in gas at a pressure lower than atmospheric pressure, compress it, and discharge the gas at atmospheric pressure. Since gas at low pressures has a large volume...

Paper mill pulp screening Inflow pressure screen is a continuing screening equipment under the fully closed position with pressure. When works, the pulp enters into the outside of screen drum along the tangent direction ..

Centricleaner System is secondary cleaning system which removes Sand and other residues that results from primary cleaning, to ensure that not much pulp is lost during the first phase. This process can be carried out up to ...

The side of a sheet or web of paper that has formed in contact with the papermaking machine's forming wire, as opposed to that formed on the top side of the paper, called the felt side. As water drains down through the wire...

In printing the doctor blade (from ductor blade) removes the excess ink from the smooth non-engraved portions of the anilox roll and the land areas of the cell walls. Doctor blades are also used in other printing and coating...

The side of a sheet or web of paper that has formed in contact with the papermaking machine's forming wire, as opposed to that formed on the top side of the paper, called the felt side. As water drains down through the wire...