The utility of air is very important to us in not only containing the life itself but also in helping us do many of the tasks which we need to be carried out. In conditions that are extreme, compressed air carries out its duties to perfection without posing any of the risks that are present with other types of energy. Compressed air can be used to drive rotary mechanisms and to run reciprocating equipment. Compressed air is used in pharmaceutical industries to apply the coating on tablets and in the injection moulding process used to manufacture plastics. In the manufacture of electronic circuits, chemicals need to be deposited to precision which is done with the use of compressed air. Pumps are used in a number of applications for moving acids, alcohols, hydrocarbons, solvents and organics. They are used to remove slurry and to dewater an area. In the manufacture of paints, inks and adhesives, AODD Pumps can deliver efficient mechanisms to handle the complex chemical products. A metallic pump can be suitable for moving fluids at rates of up to 1000 litres a minute. Pumps need to be workable when they are submersed.
All pumps have a working pressure. The measurement of pressure is based on the atmospheric pressure that is experienced on Earth. This unit is termed as a Bar. A pump can handle pressures of the order of over 10 bar. One bar is equal to100,000 pascal. One pascal is defined as a force of one Newton acting on an area of one square metre. One Newton is defined as the force that can provide an acceleration of one kilogram per metre squared. Related to the pascal is another unit that is equivalent to 1000 pascals or a kilopascal and is termed as a pieze or pz. A pieze is defined as one sthene per square metre. The sthene is not in use now as a unit as is the traditional unit called torr. A torr is equivalent to 1/760 of a standard atmosphere which in turn is equivalent to 101.325 kilopascal. Another measure of measuring pressure is pounds per square inch or psi. The pressure of the blood inside the body varies from 2.32 psi to 1.55 psi. An airbrake applies pressure between the range of 90 and 120 psi. Pumps are available in a number of sizes from fractions of an inch to over two inches. The pumps are also fabricated to ensure high levels of sterilization and purity of the fluids being transported. These pumps are made from material such as polytetrafluoroethylene or PTFE. In a fluoropolymer, the combination of carbon and fluorine creates resistance to solvents, acids and bases. Metal pumps would not be appropriate to handle such substances. Companies which are looking out for pumps for such requirements have to be very careful to select an appropriate material. Another material that is suitable for such pumps is polyvinylidene fluoride or PVDF. This material is also used to manufacture paints for metals and in the insulation material for wires.