There are many different systems and applications that use deionized water. Also known as DI water, this is water that meets high purity standards for applications in semiconductor assembly and manufacturing, in chemical process applications, and in the manufacturing of pharmaceutical products, to name just a few.
While the water must meet specific high purity requirements, it is also critical that all elements and components of the system also meet high purity requirements. This includes pipe, tubing, fittings, valves, and, when used, a DI water spray gun.
What to Look For in A DI Water Gun
Selecting the ideal DI water spray gun should focus on the design and the materials used. There are specific high purity polymers that can be used to prevent any transfer of materials and specifically ions, from the spray gun to the DI water.
To accomplish this, the gun itself is typically made with polypropylene and polytetrafluoroethylene or PTFE. This is the ideal combination for durability and long duty cycle, but also to have a highly corrosion-resistant and extremely low friction pathway for the DI water. PTFE is commercially known as Teflon, and the surface prevents any type of contaminant, including bacteria, from being able to cling to the inside surface area of the DI water spray gun.
In addition, these guns should be designed to eliminate standing water in the gun after use. In other words, they should fully discharge any water in the gun at the end of use, preventing any risk of contaminants in the gun that could result in contamination of the DI water.
