How Valve Setup Helps to Reduce the Cost for Steam Systems

Related Vendors

EDL Anlagenbau Gesellschaft mbH

Italvacuum, Srl

Donadon SDD Srl

Schubert & Salzer Control Systems GmbH

Increase Steam Efficiency with Integrated Process Controller

As an option, the 8049 positioner used here has an integrated process controller for local control tasks. This version of the positioner with an IPC process controller combines the function of a positioner with that of a process controller. Thus, it is possible to set up local control circuits as found commonly in steam circuits, with minimum cost and effort involved in installation.

The sensor for the process variable – one pressure sensor is sufficient for maintaining the pressure – is connected directly to the controller on the valve and the adjustments needed are carried out on location using a keyboard with a display or with the “DeviceConfig” configuration software.

Due to the excellent control quality, the electro-pneumatic positioner which controls the sliding gate valve pays-off within a few weeks in steam systems. By minimising the work required for installation and cabling, converting from manually-controlled valves to automated valves can be achieved extremely smooth.

Short Stroke Means Less Wear and Less Maintenance Service

In the sliding plate principle with its surface seal formed by the plates in the throttling element, the pressure of the medium against the moving valve plate assists the sealing function of the valve. This functional principle produces a self-lapping effect by the moving valve plate. This seal between the plates is therefore significantly less prone to fail and leakage rates of less than 0.0001 % of the Kvs-value are achieved.

In addition, the slotted plates suffer hardly any wear as they slide against each other so that these valves combine long service lives with a high level of enduring leak tightness, even under the severe conditions they face in steam systems, for example.

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