Englis h, Replacing the valve seat – Burkert Type 2712 User Manual
Page 11
EA 2012, 2702, 2712 - 9
englis
h
Replacing the valve seat
3)
4)
Torques:
NOTE
On installation of a valve seat with a different nominal
diameter, the order number for the valve changes.
Type
2012
2712
Actuator mm
40 - 125
175, 225
80 - 125
175, 225
DN mm
65 - 100
10 - 65
65 - 100
10 - 100
Unscrew the old seat using the assembly
tool and a spanner
X
Clean thread and sealing surface in the
housing with compressed air
X
Select a tool insert and screw it into the
assembly tool
X
Push the new seat onto the assembly tool
X
Lubricate with high temperature resistant
lubricant, e.g. Klüberpaste UH1 96-402
3)
X
Place the attached seat by hand into the
housing thread and screw it in
X
Tighten the seat with a torque wrench to
the torque specified
4)
X
Assemble in the reverse order to that
described for disassembly
X
Connection
Torque
Tole-
rance
Connection
Torque
Tole-
rance
Seat
DN
Housing
DN
Uncoated
seat
Coated
seat
Seat
DN
Housing
DN
Uncoated
seat
Coated
seat
4-15
15
25
20
+ 3
50
50
120
120
+ 8
20
20
35
28
+ 3
65
65
150
150
+ 10
25
25
50
40
+ 5
80
80
180
180
+ 10
32
32
80
65
+ 5
100
100
220
220
+ 10
40
40
100
85
+ 8
ATTENTION!
For spezial applications such as for oxygen and
analysis, use only the approved lubricants.
4)
Torques :