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30.03.2020 Rotary and diverter valves for milk powder production

The UK subsidiary of Dutch valve manufacturer DMN WESTINGHOUSE has supplied Skelmersdale-based Yew Tree Dairy with rotary and diverter valves as part of a major upgrade to its factory. This will include the installation and commissioning of a new state-of-the-art milk powder processing system.

For part of the upgrade, DMN has supplied an AL type rotary valve with easily removable end covers which facilitates access to the internals of the valve for cleaning purposes by maintenance staff. The AL rotary valve also features air-purged seals designed to prevent the build-up of product around the rotary valve shaft and seals. This can be a significant problem with dairy powders on account of their extremely low bulk density.

The installation of the new milk powder processing system will feature a further six DMN valves and will also include the BL MZC, which can be set to meter product directly from a head of material into the pneumatic conveying line which transports the product on to the next part of the process. This is particularly suitable for areas where height is a limiting factor, as there is no need for a transition piece such as a dropout box from the valve into the pneumatic line.

While the BL MZC has the same easy-clean characteristics as the AL valve, it also incorporates the MZC easy clean rails. For ease of rotary valve maintenance, the MZC system is said to be unmatched. It is simply a matter of unbolting the end cover, sliding it away from the body of the valve, cleaning the valve and sliding the end cover back into position. The end cover automatically locates in the correct position.

All DMN dairy specification valves and diverters can be specified to suit a CIP process and comply with ATEX standards, both as equipment and as an autonomous protective system.

Part of the new milk powder pneumatic conveying system at Yew Tree Dairy which incorporates valves from DMN-WESTINGHOUSE

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