Process valve body design turns a novel corner 20 August 2014

A modular valve body pioneered by Bürkert is being claimed to increase the flow coefficient of conventional angle seat valves – so reducing energy requirements and improving flow characteristics.

Valves for piping are conventionally designed so that the inlet and outlet are at the same level, with fluid flow via a seat – meaning that the fluid has to be redirected three times.

But in Bürkert's latest INOX space saving valve body, the inlet level and outlet level are separated.

The firm argues that, since the fluid flow now only has to be redirected once through 180°, this increases the flow coefficient.

Additionally, inlet and outlet levels can now be connected directly with other valve bodies, without additional piping. Body connections can be assembled in a block and designed according to plant requirements.

A pipe connection between the single valves is no longer necessary, since the fluid connection is established simply by joining the valve bodies, explains a spokesperson.

He also says that the design concept follows the requirements of 'mass customisation', enabling cost-effective production of custom solutions in small batches.

Several valve bodies can be joined to form a block using orbital welding, resulting in "a strong compact block that can receive valve actuators and peripheral items direct to their own ports".

The bodies can also be combined with standard Bürkert valve actuator heads, which, in turn, can be used with a position indicator or positioner.

In addition, Bürkert says it is possible to integrate sensors for measuring flow rate, temperature and pressure.

Brian Tinham

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Burkert Contromatic Ltd

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