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High-performance seals for butterfly valves

10 May 2021

In order to ensure that process plants meet hygiene requirements, industry-specific approvals and resistance to CIP/SIP media, Freudenberg Sealing Technologies has developed a new series of high-performance seals for butterfly valves.

The seals have been developed in conjunction with French customer, Definox, a manufacturer of process valves and stainless steel equipment for high-end applications, in sectors such as food, beverage, cosmetics, pharmaceutical, and animal feed.

Following rigorous tests, 70 EPDM 291 O-rings have already been delivered to Definox, where they have been successfully deployed and demonstrated. Based on this first success, both companies have decided to launch a project for the development of new butterfly seals.

Setting out the objectives

Developing the new seals saw the two companies draw up a list of technical targets, which included simple installation, uncompromising tightness, wear-resistant materials and sealing geometry, free of dead space. With the concept finalised, the development team at Freudenberg Sealing Technologies set to work. 

Read the full article in the May issue of DPA



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