VAG Operation and Maintenance Instructions • 10
Installation is done in the opposite order.
Figure 9 shows a schematic representation of the spare parts kit
(pre-drilled shut-off cone, bolt and self-locking cap nut made of
stainless steel). Depending on the type of hydrant, this may look
different in some details.
7 Trouble-shooting
For all repair and maintenance work, please observe the general
safety instructions described in Section 6.1!
Picture 9: Spare parts set shut-off cone with bolt and self-securing cap nut
Problem
Possible causes
Solutions
Hydrant hard to open
Initial gate valve closed
Open initial gate valve and try again
Hydrant sticky
Wear and tear and bearing
Replace the entire bonnet or sliding disk, as described in 6.4.1/6.4.2.
Tightness on the hydrant shut-off.
Foreign material (e.g. plastic shavings)
are stuck between the valve cone
(15.3) and valve seating socket
Flush hydrant by opening the hydrant shut-off valve
for a short time. Then check tightness again.
Still leaking from hydrant shut-off
Damage to the valve cone (15.3)
or the valve seating socket
Remove the main valve assembly (see 6.4.3) and re-
place the valve cone (15.3). If valve seating socket is dam-
aged the complete hydrant will have to be replaced.
8 How to contact us
Head office
VAG-Armaturen GmbH
Carl-Reuther-Str. 1
68305 Mannheim
Germany
Phone: +49 (621) 749-0
Fax: +49 (621) 749-2153
http://www.vag-group.com
Service
Our service hotline can be reached 24/7 world-wide. In case of
emergency, please contact us by phone.
Servicehotline: +49 621 - 749 2222
Service per E-Mail: [email protected]
