After a separate logistics and cleanliness airlock, one enters the actual cleanroom. Here, each work material is specially cleaned and marked with a yellow sticker. The ultrasonic washing system directly connected to the clean room supplies the six assembly and test benches with valve components from the finished parts warehouse. Between three and six employees per shift work on the assembly of safety valves. An integrated low-floor test bench for large valves and a special test bench for the LESER Change-over Valve enable the assembly of the entire LESER product range. In the integrated UV-light test cabin, the purity of the components can finally be verified. Here even very small impurities become visible.
The option oil and grease free is mandatory in air separation plants, or in almost all types of oxygen processes. In addition, pharmaceutical processes or polysilicon plants require oil and grease free fittings. The main difference is the possible consequence of unwanted oil or grease in the process. In applications such as food processing and pharmaceutical, possible contamination will result in a non-conforming product. In oxygen processes, an explosion or fire could possibly occur.