Thursday, 19 August 2021 14:38

Minimal maintenance with more than one million switching cycles

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Seat valves with extended pressure and temperature. Bürkert now offers particularly durable and low-maintenance on/off and control valves for switching and controlling gases, liquids and steam in the process and food industries that are suitable for media pressures up to 25 bar and temperatures up to 230 °C.

Low-maintenance on/off and control valves are essential in the food and process industry. They control the flow of gases, steam or liquids, for example in auxiliary processes such as CIP (cleaning-in-place), reverse osmosis or temperature control. Bürkert now offers a wide range of electric motor and pneumatically operated on/off and control valves specially suited for these applications, with extended pressure and temperature ranges. Thanks to special sealing materials, the valves with stainless steel valve bodies work without any problems with media up to 25 bar gauge pressure and temperatures between -40 °C and 230 °C (Image). The rated service life at 200 °C is more than one million switching cycles. Devices and seals therefore only very rarely need to be replaced, which in turn increases system availability. Sealing materials and lubricants suitable for foodstuffs, drinking water, fuel gases or oxygen allow the valves to be used with other media, for example for cleaning and flushing purposes, for heat carriers or saturated steam at 20 bar and 215 °C. So they can be used to switch and control all common gases and liquids for heating and cooling purposes in the specific process as well as in traditional CIP processes. It is also possible to use them with heat transfer oils e.g. in conjunction with alternative heating concepts.

The seat valves with increased pressure and temperature range easily control and switch media with up to 25 bar overpressure and temperatures from 
-40 °C to 230 °C. (Source: Bürkert Fluid Control Systems) The seat valves with increased pressure and temperature range easily control and switch media with up to 25 bar overpressure and temperatures from 
-40 °C to 230 °C. (Source: Bürkert Fluid Control Systems)

Extensive assortment of process valves
The high-pressure and high-temperature valves are available in different versions with straight-seat on/off and control valves as well as with angle seat on/off and control variants. Depending on the version, the stainless steel bodies offer flange, weld, thread or clamp connections in DNs from DN10 to 100 or NPS 3/8” to 4”. Design details take into account the special requirements of the areas of application. Swivel plates, for example, increase seat tightness while optimised wipers extend the service life of the self-adjusting packing. Different plug and seat sets in metallic or soft-sealing variants allow an exact adaptation to the respective operating medium. The on/off valves with media flow below the valve seat for water and other liquid media prevent pressure surges (water hammer). This reduces maintenance and replacement costs, especially when no service personnel are on site.

About Bürkert Fluid Control Systems
Bürkert Fluid Control Systems is one of the world's leading manufacturers of measuring, control and regulating systems for liquids and gases. Bürkert solutions are used in a wide range of industries and applications – ranging from breweries and labs to medical, bio-engineering and aerospace technology. With a portfolio of more than 30,000 products, Bürkert is the only supplier to offer all fluid control system components, from solenoid valves to process and analytical valves, from pneumatic actuators to sensors.

With its headquarters in Ingelfingen in southern Germany, the company has a wide-ranging sales network in 36 countries and more than 3,000 employees worldwide. Bürkert continuously develops customized solutions and innovative products at its five Systemhaus locations in Germany, China, and the USA, and in four research centers.

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