Burkert Type 2012 - Manual (Page 16)

16
Replacingthesealset
Type 2000, 2002, 2012
6.2 change the packing gland for valves with actuator
size f (80 mm), G (100 mm), h (125 mm) and
identification „R“
Danger!
Risk of injury from discharge of medium and release of pressure!
▶ Before removing a device, switch off the pressure and vent the lines!
the seal set for the packing gland contains:
item description item description
13, 14 7 Chevron seal 7 1 Spindle guide
Upper chevron seal
Upper pressure ring
Pressure spring
Lower pressure ring
Lower chevron seal
Spindle guide
Pushing direction
for packing gland parts
Figure 3: Pushing direction for packing gland parts
Warning!
Risk of injury if the wrong tools are used!
▶ To remove the actuator from the valve body, use an open-end wrench, never a pipe wrench.
▶ To replace the packing gland, use a special installation wrench (see Kapitel “8”).
▶ Observe tightening torques!
note!
Before the packing gland can be replaced, the actuator must be removed from the valve body and the swivel
plate removed.
procedure:
→
Clamp the valve body
1
into a holding device (applies only to valves not yet installed).
note!
damage to the seat contour!
▶ When removing the actuator, ensure that the valve is in the open position.
→ for control function a: pressurize the lower control air connection with compressed air (5 bar): Valve opens.
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