Control valve specialist, Samson Controls, offers a range of products incorporating these features which are manufactured to quality assurance systems certified to ISO 9001, whilst also meeting stringent FDA requirements.

For example, the type 3347 control valve has polished steel parts to ensure the highest purity for the process medium, special PTFE bushing along with an additional steam line connection that is used to meet very stringent purity requirements preventing bacteria from spreading at the actuator stem guide.