In food production, the health requirements of different production areas are different.European EN1672-2 standard defines the environment of food processing machinery as three working areas, namely food area, splash zone and non-food area. According to the health requirements of different regions, the required pneumatic technology and products are not the same.

Food and splash areas require safety and hygiene

In the food area and splash zone, pneumatic technology is mainly used for the distribution, bottling, forming, filling, preparation and sealing and other devices, because the pneumatic components need to be directly or indirectly with the main production of raw materials, in order to avoid contamination of the final product , Its material should be non-toxic, non-absorbent and corrosion-resistant stainless steel original.If you use aluminum alloy material, it should have a certain corrosion resistance, non-toxic, non-absorbent.The rubber products used inside the components, such as seals, shall conform to the corresponding hygienic requirements and shall be of heat, acid and oil resistance, acceptable for normal cleaning and disinfection, insoluble, non-toxic and nonabsorbent, Affect the smell of the product.Work air filter should ensure that more than 5μM of dust through the structure and the surface should be smooth, durable, easy to clean and can achieve a good cleaning effect. Although the design of the splash zone needs to be similar to that of the food area, the material requirements may be reduced as appropriate, and the design must be guaranteed to have no negative impact on the food product.

Typical pneumatic products used in these two environments are stainless steel cylinders, clean cylinders, easy to clean valve islands, stainless steel filters and pressure reducing valves, among which the most representative is clean cylinders such as the NORGREN PVA Series of clean cylinder.The clean design of this cylinder eliminates the possible attachment of the food particles to the cavity, crevices and sharp corners, with a self-draining function, so the liquid can flow directly.Cylinder material is made of anodized aluminum, the piston rod is made of hardened stainless steel. The sealing material is polyurethane material. The cylinder is in accordance with the requirements of IP67. It is not only resistant to corrosion, but also can be cleaned repeatedly.In addition, the cylinder is in line with ISO6431 standard products, with replaceability, and even the installation of parts are also used standard parts, installation and maintenance are extremely convenient.