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17
Technical Information
Vent Accessories
Vent Accessories
The vent valve and vent device allow to avoid undesired venting of
the pump during temporary power failure and enables an automatic
vent operation.
TwisTor 404 FS On Board Controller Compatible
Vent Valve mod. 9699834
Figure 29
This vent valve waits before opening a minimum time of about 5 sec.
This time can be increased up to about 220 min. by means of a setting
of the A-plus software (optional).
To install the vent valve, unscrew the threaded plug (see figure
below).
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TwisTorr 404 FS User Manual / 87-901-048-01
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