Control Functions - Gemü 415 Original Einbau- Und Montageanleitung

Assembly - Butt weld spigots:
Assembly butt weld spigots
Adhere to technical welding norms!
1. Disassemble butterfl y valve (see chapter
12.2 "Assembling the shut-off seal").
2. Remove the protective caps.
3. Weld the butterfl y body half 1 to the pipeline
2.
4. Connect butterfl y body half 3 with the other
side of the pipeline.
5. Reassemble the butterfl y valve (see chapter
12.3 "Assembling the shut-off seal").
Assembly - Threaded connections:
Assembly threaded connections
Screw the threaded connections into
the piping in accordance with valid
standards. Use appropriate thread
sealant. The thread sealant is not
included in the scope of delivery.
1. Screw butterfl y valve body 1 into the pipeline
2.
2. Hold with open-end wrench 3.
3. Connect the other side of the butterfl y valve
body 1 with the pipeline in like manner.
Observe appropriate regulations for
connections!
After the installation:
Reactivate all safety and protective
G
devices.
11.2

Control functions

The following control functions are available:
Control function 1
Normally closed (NC):
Butterfl y valve resting position: closed
by spring force. Activation of the actuator
(connector 2) opens the butterfl y valve.
When the actuator is vented, the butterfl y
valve is closed by spring force.
Control function 2
Normally open (NO):
Is achieved by assembling the actuator
on the butterfl y valve body with the disc
in the open position.
Butterfl y valve resting position: opened
by spring force. Activation of the actuator
(connector 2) closes the butterfl y valve.
When the actuator is vented, the butterfl y
valve is opened by spring force.
Control function 3
Double acting (DA):
Butterfl y valve resting position: no defi ned
normal position. The butterfl y valve is
opened and closed by activating the
respective control medium connectors
(connector 2: open / connector 4: close).
23 / 32
415