Performance enhancements for mass flow controllers

Many gas flow meters are equipped with seals made of DuPont Viton fluoroelastomer.

However Digital Mass Flow Controllers (MFCs) need O-ring seals and other custom parts that do not swell in the presence of more aggressive chemicals used within their wide range of industrial applications.

Dichtomatik is an authorised distributor for the DuPont Kalrez range of sealing products - designed to give extended performance when operating with the widest range of chemicals, even incorporating elevated temperature conditions. Tests undertaken with an MFC, fitted with DuPont Kalrez Spectrum 6375 O rings and custom parts, are reported to have showed an increased reliability of operation and overall Meantime Between Failures (MTBF) of the equipment.

Dichtomatik says this increased reliability ensured a competitive advantage for the MFC manufacturer and a commercial advantage for the equipment user, as it reduced production downtime. A logistics saving was also achieved as the standardisation on Kalrez parts for all the site modules led to a reduction in the worldwide inventory of different elastomer seals types for the company.