Repair - Garlock GAR-SEAL Betriebsanleitung

Valves with manual lever:
The position of the manual lever indicates the position of the disc:
Manual lever 90° horizontal to piping:
Manual lever parallel to piping:
Note
Valves with gearing:
Clockwise operation of the manual wheel closes the valve. Counter-clockwise operation of
the manual wheel opens the valve. Position of the valve disc 90° to piping = Valve closed and
Valve disc parallel to piping = Valve open can be read on the position display on the gearing.
Note
Due to their construction, Garlock valves are maintenance-free.
If the lining is damaged or destroyed through mechanical influence and complete or partial replacement of the
interior set is required, easy and fast repair is possible (see 7 Repair).
If a gasket has to be removed from piping, medium may escape from the piping or the valve.
In case of unhealthy or dangerous media the piping must be completely emptied before the
valve is removed. Be careful of residue that might be flowing out or remained in dead spaces.
The parts of the valve with product contact must be properly de-contaminated before repair.
Danger
7

Repair

7.1 Repair steps
– Loosen and remove body screws.
– Remove lower body part. Remove any remaining seal from the lower part.
– Remove complete interior set from the upper body part and pull it off the shaft. Remove any remaining
seal from the upper part.
Be careful of residue that might be flowing out or remain in dead spaces. The parts of the valve
in media contact must be properly de-contaminated before further repair.
Danger
– Insert seal into the upper part (Pos. 10 of the spare parts list).
– Push new, pre-mounted interior set onto shaft (Pos. 11, 13, 15, 16). Ensure that the valve disc is slightly
open during installation (approx. 10°).
– Insert the elastomer semi-spheres (Pos. 12) in the upper body part and check that they are flush with the
drain of the elastomer groove in the lining.
– Insert seal into lower part (Pos. 14).
– Insert securing elements (Pos. 20) and intermediate disc (Pos. 8).
– Put on lower body part and tighten body screws with torques according to the following table:
– Position the bottom body part and tighten the housing screws to the torques specified in the table below
with the disc partially open:
Inch 2
DN
mm 50
Wafer Nm 35
LUG Nm 35
2½ 3 4 5
65 80 100 125
35 35 55 60
55 55 55 110
Valve closed,
Valve open.
6 8 10 12
150 200 250 300
120 130 140 230
120 180 190 200
23
14 16 18 20
350 400 450 500
135 150 175 200
135 150 175 200
Leaders in Sealing Integrity
24
600
265
265