Deionized Water Handling

Another electronics industry related application is in circuit board assembly wash down. After electronic components, hard disks, or circuit boards are manufactured, they are washed down with highly purified deionized water that has almost zero conductivity. After the wash down, the fluid, which is now contaminated, is collected and transferred to a storage tank. From here it is transferred by another MTH pump at high pressure (150-250 PSI) through a reverse osmosis membrane that removes the contaminated particles, and allows clean fluid to pass through and be reused. Stainless steel construction is required. Other RO (reverse osmosis) applications are also served by MTH X41 Series seal-less pumps for shipboard drinking water supplies.

An up-and-coming alternative to DI water washdown of circuitry and other contamination sensitive computer components, is supercritical carbon dioxide scrubbing. The carbon dioxide is pumped in a very high pressure supercritical gaseous-fluidic state around 1500 PSI or greater system pressure. In this state, the CO2 is an extremely effective and environmentally friendly cleaning solvent that does not harm components. MTH is currently pioneering the research to develop a pump to handle this high technology application.