Masoneilan 41005 Series Globe Valves with API-6A Capabilities Instruction Manual
|
39
© 2023 Baker Hughes Company. All rights reserved.
Table 1 - PTFE Based Packing
N.D. mm
(in.)
Stem Size
(in.)
Number of
Packing
Rings
Number of
anti-
extrusion
rings
80 (3”)
25.4 (1”)
4
2
100 (4”)
25.4 (1”)
4
2
150 (6”)
28.56 (1”1/8)
5
2
200 (8”)
31.75 (1”1/4)
4
2
250 (10”)
31.75 (1”1/4)
4
2
E. Install Packing studs (B220)
F. Install the guide bushing (B203) in the bottom of the
packing box.
G. Install packing set (B207 and B208)
H. Assemble Packing flange/follower (B219)
I. Screw the packing flange nuts (B221) by hand
J. Check that the valve plug (B112) moves freely
K. Gradually apply torque values indicated in table 3. Pay
attention to keep an even gap between the stem (B150)
and packing flange/follower (B219) when torquing. There
must be no contact between the stem (B150 and the
packing flange/ follower (B219).
4.3 Repair of Parts
Before re-assembly, the parts must be carefully examined in
order to eliminate any scratched, worn or damaged parts.
4.3.1 Guiding Surfaces
The guiding surfaces of the cage and valve plug, the guide
bushing, and the guiding surfaces of the plug stem and
packing box must be checked. Otherwise, the part must be
replaced as soon as possible (see paragraph “Spare parts”).
Table 2 - Torque Values
D
es
cr
ip
tio
n
Stem Size
(inch)
1
1’’1/8
1’1/4
Valve Class 10K/15K
10K/15K
10K/15K
Bolt Thread
size
1/2”-
13UNC-2A
1/2”-
13UNC-2A
5/8’’-
11UNC-2A
Bolt number
4
4
4
Packing
studs
Torque [N.m]
82
69
151
Torque [ft-lb]
61
51
111
Guiding
Sealing
Seating
Surface Temperature
Figure 2 - Cage Guiding, Sealing & Seating Surfaces
Sealing
Seating
Guiding
Plug Seating Surface
Figure 3 - Plug Guiding, Sealing & Seating Surfaces
Summary of Contents for Masoneilan 41005 Series
Page 50: ...Notes...
Page 51: ...Notes...
