Orders Placed During the Christmas Period (21st Dec 2018 - 1st Jan 2019) Will Be Processed on 2nd January 2019.

Electromotive Process Valves from Burkert

Electromotive Process Valves from Burkert

Burkert has a reputation as one of the premier manufacturers of pneumatically operated control valves worldwide, the simple modular design, suitable for use across industries and applications, belies the accurate and advanced capabilities of their range running from the highly accurate globe valves, high flow angle seat valves and hygienic diaphragm valves.

However, they have always been limited by the requirements of using air as the motive medium. With the introduction of their new electromotive actuator Burkert aim to set new standards with regards to the performance, reliability and affordability of electrically actuated control valves.

Kieran Bennett from Burkert says: "Our Electromotive Process Valves are a real game changer. They are the fastest operating electric control valve on the market. The ease of configuration makes them some of the most flexible as well."

Precise Control at Speed

Designed with a view to eliminating the traditional weak points of electrically operated control valves the Burkert Electromotive product family are particularly well suited to applications with stringent requirements for accuracy and speed of control.

The performance of the new Electromotive valves is really the standout feature; an adjustable control speed of 6mm/s doesn’t sound that much until you look at the speeds of other electric control valves (0.1mm/s to 3mm/s). Along with control options that allow the customer to tailor the valve to their application including definition of stroke and closing limits and soft approach of end positions.

With the unique ball-screw operation the Electromotive actuators from Burkert mean that when compared to pneumatic spring balanced actuators they can move to position with virtually no delay, without overshooting and remain stable regardless of fluctuations in the media pressure.

Making sure they are suitable for even the most difficult situations a SAFEPOS energy pack can be utilised to make sure that in the event of power-failure a safe position can be achieved, together with the integral manual override, situations that would previously have required a pneumatic valve and the costly pipework to go with it, can now ultilise the electromotive valves.

Technical Data and Future Developments

Burkert ElectromotiveReady for launch the new Burkert Electromotive Process Valves will be available as follows:

  • Type 3360, Angle Seat Control Valve with Electromotive Act
    • Use of the Valve Body and plug as used in the Type 2702 and 2300
    • Available at launch in sizes 1/2” to 2”
    • KV Values from 5m3/h up to 53m3/h
    • 24VDC Operating Voltage, accepting a 4-20mA or 0-10V Signal
  • Type 3361, Globe Control Valve with Electromotive Act
    • Use of the Valve Body and plug as used in the Type 2712 and 2301
    • Available at launch in sizes 1/2” to 2”
    • Kv Values from 0.1m3/h to 37m3/h
    • 24VDC Operating Voltage, accepting a 4-20mA or 0-10V Signal

Following launch, continuous expansion and development of the Electromotive Process Valve family will be undertaken with options for process controller, membrane valves, connecting diameters up to DN100 and connection to other field bus systems in addition to Ethernet, Profinet and Modbus. Already developed are the open/close isolation valves:

  • Type 3320, Angle Seat Electromotive Isolation Valve
    • Use of the Valve Body and plug as used in the Type 2000 and 2100
    • Available at launch in sizes 1/2” to 2”
    • 24VDC Operating Voltage
  • Type 3321, Globe Electromotive Isolation Valve
    • Use of the Valve Body and plug as used in the Type 2002 and 2101
    • Available at launch in sizes 1/2” to 2”
    • 24VDC Operating Voltage

Applications & Case Study

Burkert targeted 2 key groups of applications when developing the Electromotive Process Control Valves:

  • Applications where the use of compressed air is not desired or possible e.g. large area storage systems with long-distances to the single valves as well as systems for mobile decentralised water treatment.
  • Applications where fast, precise control is required e.g. engine test rigs, temperature control in heat exchangers and modern food and beverage systems.

Valves Online have recently specified the type 3361 Electromotive Globe Control valves for a customer.

Application:

Large scale water storage tanks to supply cooling towers. Water is supplied from the Mains Water system; the mains water provider has specified that the rate of change cannot exceed 0.27l/s. The water flow required to fill the tanks in the time scale required is 10m/s. Media is clean water at 5 Bar. No compressed air was available because of the location. Use of 0-10V control signal.

Valves Online working together with the Burkert Technical Team specified the Burkert type 3361 Electromotive Globe Control Valve because:

  • Electromotive actuator, requires no compressed air supply, is IP65 Rated
  • The quick response time of 6mm/s movement and the control curve of the valve mean that the rate of change can be achieved
  • In the event of the valve overshooting, the valves near instantaneous response can throttle back
  • Sized at 2” with a maximum Kv of 37m3/h the valve will provide control across the full length of travel and allow a flow of 10l/s with a 1 Bar pressure drop

Satisfied with the calculations and design undertaken the customer required five units which will be delivered within five weeks from the date of the order, with a further three required in the next construction phase.

For help with your flow control requirements do not hesitate to get in contact with the technical team at Valves Online by telephone on 01822 855 600 or by email on sales@valvesonline.co.uk.