Bürkert has released a stainless steel hygienic rotary actuator for automated control of hygienic applications with ball and butterfly valves.
The product will primarily serve in food & beverage applications, including dairies, breweries and distilleries. Manufactured from Type 304 stainless steel, the actuator will also be presented to the pharmaceutical and water treatment sectors. Available in sizes P0, P1 and P2, the actuator is compatible with any variety of ball or butterfly rotary valve.
It can be specified with the Bürkert’s Element control head, from the on/off Type 8691 to the modulating process control of the Type 8693, enabling the Type 2053 actuator to be used as any part of a decentralised automation solution. Communication takes place over Bürkert Systembus (büS), based on the CANopen protocol, with support for PROFINET, PROFIbus, Ethernet and Modbus/TCP.
The Element control head interface is common to the company’s linear valves, reducing cost and time in stocking and procurement for existing Bürkert valve users upgrading to the Type 2053 actuator.
As the Type 2053 actuator uses the ISO 5211-compliant standard interface for valve mounting, it can also be retrofitted to virtually any brand of valve. Should the valve have a proprietary mounting system, a third-party conversion kit can be used to enable integration. Bürkert can supply the complete valve system, however retrofitting the actuator to existing valves can an enable easier installation.
In addition to the welded stainless steel housing, which is free of corners or edges, hygiene is further enhanced through the internal pilot air duct. The Element mounting system also removes the need for external tubing between the actuator and control head, allowing a crevice-free, washable design.
Durability is also enhanced by the air refresh system within the fully sealed actuator, which requires no maintenance. The system recycles a proportion of the clean, dry air used to pressurise the actuator, re-routing it to its piston and spring system.
Alternate systems suck ambient air into the chamber when the spring is compressed. In environments such as dairies and breweries with moist ambient air, this corrodes the spring over time. Bürkert expects a three-fold increase in the lifetime of the spring where the same technology deployed on its Element valves increased cycle lifetime from two to seven million.
The Type 2053 actuator has also been designed to reduce energy costs, with a small diameter meaning a lower requirement for compressed air.
