New control heads extend the life of process valves

19/11/2019 09:38:22
 
 
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ImagesClick Image for 300dpi jpg fileNew control heads extend the life of process valvesNew control heads extend the life of process valves

Investing in high-quality process control valves have several operational advantages, including an extended service life. However, when just the valve actuators reach the end of their service life, the options can be limited, especially when the OEM parts are obsolete.

Fortunately for a UK based malt processer Bürkert has been able to provide a cost-effective retrofit solution for two hundred third-party valves, upgrading them with Bürkert Type 8691 control heads to keep the full complement operational for years to come.

The food and beverage industry uses process control valves extensively to manage the flow of liquids and gases throughout the manufacturing process. As such, their reliability is essential to the continued operation of the food manufacturing process: keeping sufficient spare parts available is therefore an important task.

However, as equipment ages, the original equipment manufacturer (OEM) may no longer support the product. At this point, maintenance managers can be left with just their own stock of spare parts, which will, inevitably, run out at some point.

Cost-effective solutions

In this case, the food manufacturer took the opportunity to investigate the alternatives, starting with replacing the control valves completely. With over 200 process control valves affected, replacement would be a substantial investment and the payback period would have been longer than desired.

At the same time, Bürkert, as an existing supplier to the company, was invited to offer a solution. Craig Kerr, Sales Manager at Bürkert, explains: “We were provided with a spare control valve from the production line and asked to deliver a proposal that would resolve the issue of ageing controls, while retaining the value in the valve body.”

As a major manufacturer of process control valves, Burkert could have offered a complete replacement valve, but having assessed the condition of the valve body decided that just the control head needed attention. The obsolete pneumatic actuator could be replaced with Bürkert’s Type 8691 control head with the simple addition of an adapting bracket to attach it to the legacy valves.

Plug & Play

Craig continues: “The manufacturing process operates a decentralised control system using ASI, with the valves either open or closed. Bürkert’s suggested solution would provide a simple, plug-and-play control head that would easily attach to the control valve body.”

In all, it would take less than an hour to replace each control head. This includes assigning an address for the PLC and using the tuning function where the operator presses the buttons to open and close the valve. The integrated valve position sensor registers these points and stores them to ensure reliable valve operation.

The Type 8691 is ideally suited to the food and beverage industry; being constructed from stainless steel, with excellent ingress protection ratings, it is easy to clean and has excellent chemical resistance properties. In addition, it is equipped with bright, coloured LED status indicators that show the position of the valve at a glance.

Craig concludes: “The customer had the first unit on trial for a short period before ordering a further one hundred units. These were all installed and commissioned by the customer and one year on, they are all continuing to function reliably. This solution has been very cost-effective, saving thousands in process hardware and replacement costs by allowing the customer to retain the original valves and minimise any potential downtime from the upgrade.

Image Captions:

Image 1: The Type 8691 is ideally suited to the food and beverage industry; being constructed from stainless steel, it is easy to clean and has excellent chemical resistance properties.

Image 2: The Type 8691 is equipped with bright, coloured LED status indicators that show the position of the valve at a glance.

About BURKERT

Burkert Fluid Control Systems is one of the leading manufacturers of control and measuring systems for fluids and gases. The products have a wide variety of applications and are used by breweries and laboratories as well as in medical engineering and space technology. The company employs over 2,500 people and has a comprehensive network of branches in 36 countries world-wide.

The image(s) distributed with this press release may only be used to accompany this copy, and are subject to copyright. Please contact DMA Europa if you wish to license the image for further use.

Editor Contact

DMA Europa Ltd. : Brittany Kennan
Tel: +44 (0)1562 751436 Fax: +44 (0)1562 748315
Web: www.dmaeuropa.com
Email: brittany@dmaeuropa.com

Company Contact

Bürkert Fluid Control Systems : Kirsty Anderson
Tel: +44 (0)1285 648761 Fax: +44 (0)1285 648721
Web: www.burkert.co.uk
Email: kirsty.anderson@burkert.com

 
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