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10
Stem Seal Adjustment
STEM SEAL ADJUSTMENT (Bolted Packing Gland) Sizes:
3” Cl.300, 4”-6” Cl.150 & 300, DN80 PN25-PN40, DN100-
150 PN10-PN40 (1156, 1176)
To adjust for leakage along the valve stem, turn the
packing adjustment bolts (#21) (6pcs or 8pcs) clockwise, in
approximately 1/2-turn increments to compress packing
gland (#8) and packing (#13). Use torques from following
table. (When tightening packing bolts, use proper
crisscross adjustment pattern as shown below).
Note:
If a tight seal cannot be obtained, continue with the
instructions for valve repair
4
6 - bolts
1
2
3
5
6
8 - bolts
Packing Adjustment
KFO1156: HIGH TEMPERATURE TRIM
KFO1176: STANDARD TRIM
Valve Size
Pressure Class
Packing Gland
Bolt size
Quantity
Packing Gland Bolts Torque
KFO1176
KFO1156
NPS
DN
Class
PN
(inch)
(no’s)
(Nm)
(in-lbs)
(Nm)
(in-lbs)
3”
DN80
#300
25-40
7/16”
6
27
239
18
159
4”
DN100
#150
10-16
7/16”
6
27
239
18
159
4”
DN100
#300
25-40
7/16”
8
24
212
17
150
6”
DN150
#150
10-16
7/16”
8
24
212
17
150
6”
DN150
#300
25-40
1/2”
8
44
389
44
389
Summary of Contents for TUFSEAT Performance Series
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