Burkert Type 2301 User Manual
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Maintenance, cleaning
10.3.2 replacing the valve seat set
When replacing the valve seat, the actuator must be
removed.
The necessary work steps are described in the previous
sub chapter “10.3.1 Replacing the control cone set”.
When installing a valve seat with a modified orifice, the
identification number for the globe control valve changes.
The valve seat set consists of
• Valve seat
• Graphite seal
• O-ring (depending on the version)
• Lubricant
Danger!
risk of injury from discharge of medium and pressure!
It is dangerous to remove a device which is under pressure due to
the sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and vent the
lines.
Warning!
risk of injury from improper installation!
Assembly with unsuitable tools or non-observance of the tightening
torque is dangerous as the device may be damaged.
▶ Replacement only with special installation tools (for order numbers
refer to chapter entitled “12.2 Installation tools”).
▶ Observe the tightening torque (see “Tab. 12: Tightening torques
and “Tab. 13: Tightening torques of
procedure:
→
With the actuator being removed, replace the valve seat as
follows.
replacing the valve seat
→
Unscrew the old valve seat using the installation tools and a
spanner.
→
Clean the thread of the body and the sealing surface with com-
pressed air.
→
Select the correct tool insert and screw it into the installation
tool.
→
Place the new valve seat onto the installation tool.
english
Type 2301