Industry

Dairy

Sticky, hygroscopic milk powder and daily washdown call for a drainable sanitary valve with polished pockets.

Hygiene level: SANITARY
Typical material: Skim milk powder, whole milk powder, whey protein, lactose
Segments: Milk powder, whey protein, lactose, casein
Evidence on file: Ra 0.4 µm internal finish on a quick-release rotor rail

Pain points

Sticky powder blinding the pockets
Milk powder takes up moisture and builds on the pocket walls until the rotor plugs. Polished Ra 0.4 µm pockets and a helical rotor that scours the inlet keep the walls clear.
Wet cleaning between runs
Water sits in the body after washdown and the valve does not dry. A quick-release rail drops the rotor out so the body drains and dries within one shift.
Caking under the silo outlet
Hygroscopic powder cakes where the inlet is narrow and the first material in condenses. An oversized inlet and a low-shear helical rotor feed the caked layer instead of cutting into it.

Sanitary design with rail-mounted rotor extraction.

Side-entry design to protect fragile granules from shearing.