Description Of System - Alfa Laval 8693 Anleitung

5. descriPTion of sysTem
Positioner or process controller
Actuator
Valve body
Fig. 1: Structure 1
The positioner Type 8692 and the process controller Type 8693 are
electropneumatic positioner controllers for pneumatically actuated
control valves with single-action or double-action actuators.
The positioner, together with the pneumatic actuator, make up an
optical and functional unit.
The control valve systems can be used for a wide range of control
tasks in fluid technology and, depending on the application condi-
tions, different process valves from the Alfa Laval range can be
combined with the positioner or with the process controller. Slanted
seat valves, straight seat control valves, diaphragm or ball valves are
suitable.
Type 8692, 8693
Description of system
Process valve
Transparent cap under it
control module with display and keys
Body casing
Electrical connection module
Pressure limiting valve
Additional exhaust air port (label: 3.1)
only for Type 23xx and 2103 with pilot-operated control
system for high air output (actuator size ø 125 / 130)
Air intake filter
Fig. 2: Structure 2
english
Exhaust air port
(label: 3)
Pilot air port
(label: 1)
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