System Description; Intended Application Area; Function Of The Positioner And Combination With Valve Types - Burkert 8694 REV.2 Operating Instructions Manual

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SYSTEM DESCRIPTION

5.1

Intended application area

The positioner Type 8694 is designed to be mounted on pneumatic actuators of process valves for the
control of media.
5.2 Function of the positioner and combination with valve
types
Positioner Type 8694 is an electropneumatic position controller for pneumatically actuated control valves with
single-acting actuators.
Together with the pneumatic actuator, the positioner forms a functional unit.
The control valve systems can be used for a wide range of control tasks in fluid technology and, depending on
the application conditions, different process valves belonging to series 2103, 2300, 2301, 26xx or 27xx from
the Bürkert range can be combined with the positioner. Angle-seat valves, diaphragm valves or ball valves
fitted with a control cone are suitable.
"Figure 1" shows an overview of the possible combinations of positioner and different pneumatically actuated
valves. Different actuator sizes and valve nominal widths, not illustrated here, are available for each type. More
precise specifications can be found on the respective data sheets. The product range is being continuously
expanded.
with angle seat valve
Type 2300
Figure 1: Overview of possible combinations
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Positioner Type 8694
with straight seat valve
Type 2301
english
Type 8694 REV.2
System description
with angle seat valve
Type 2702
with diaphragm
valve
Type 2730