Replacement Of Valve Seat - Burkert 2712 Manuel D'utilisation

M S
AINTENANCE AND ERVICING

Replacement of valve seat

To replace the valve seat, the actuator must be disassembled from the housing. For disassembly and
assembly, see "Replacing the control cone".
Unscrew the old housing seat using the assembly tool and a
spanner.
Clean thread and sealing surface in the housing with compressed
air.
Select a tool insert and screw it into the assembly tool.
Push the new seat onto the assembly tool, grease the thread with
stainless steel lubricant, e.g. Klüberpaste UH1 96-402 from
Messrs. Klüber.
ATTENTION!
For special applications such as for oxygen and
analysis, use only the approved lubricants.
Place the attached seat by hand into the housing thread and
screw it in.
Tighten the seat with a torque wrench to the torque specified.
NOTE
On installing a valve seat with a different nominal
diameter, the order number for the valve changes!
12 - 2712 big
assembly tool
tool insert
(to match the nominal
diameter of seat)
valve seat
Tightening torques for seat assembly
DN
65
80
100
Seat assembly tools
Housing DN
15
20
25
32
40
50
Torque
[Nm]
+10
150
+10
180
+10
220
Order no.
652 604
652 605
652 606
652 607
652 608
652 609