Valves are essential components of all food-processing plants, and the
quality of the valves used strongly influences the microbiological sa
fety of the food production process. Valves for food-contact use must
therefore comply with strict hygienic requirements. This paper summari
zes guidelines prepared by the Valves subgroup of the European Hygieni
c Equipment Design Group (EHEDG) for the hygienic design of valves for
food-processing applications. This is the 14th in an ongoing series f
eaturing newly released EHEDG guidelines to be published in Trends in
Food Science & Technology. The EHEDG is an independent consortium form
ed to develop guidelines and test methods for the safe and hygienic pr
ocessing of food, and includes representatives from research institute
s, the food industry, equipment manufacturers and government organizat
ions in Europe.