Metso L12 Series, Installation Maintenance And Operating Instructions

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6 2 L12 71 en
will open unexpectedly due to pre-stressed spring package.
This may cause significant harm to people and material
around the valve.
In valves with certain nominal sizes some flange bolts do
not pass the valve body. The valve body is thus equipped
with grooves, holes or threads (see Section 3.2.1).
Ensure that the disc can turn to the open position after pre-
liminary tightening of the flange bolts. The actuators of
control valves are usually equipped with position stops
which usually only allow the disc to open 80°.
3.2.1 Mounting options

X Flange bolts pass the neck of the body

SB Stud bolts at the neck of the body
Fig. 6 Mounting dimensions
Table 1 Mounting dimensions (mm)
Valve size
D
L12
80 67
100 87
125 112
150 143
200 191
250 241
300 287
350 330
400 371
500 464
600 565
700 676
800 773
900 874
1000 968
1200 1150
1400 1350
Fig. 7 Mounting options
Table 2 Mounting options
Valve type PN 10 PN 16 PN 25 ANSI 150
L12A 80 X X X X
L12A 100 X X X X
L12A 125 X X X X
L12A 150 X X X X
L12A 200 X X X X
L12A 250 X X X X
L12A 300 X X X X
L12A 350 X X X X
L12A 400 X X X X
L12A 500 SB SB SB SB
L12A 600 SB SB SB SB
L12B 700 SB SB SB SB
L12B 800 SB SB SB SB
L12B 900 SB SB SB SB
L12B 1000 SB SB SB SB
L12B 1200 SB SB SB SB
L12B 1400 SB SB SB SB
Fig. 8 Stud bolt mounting dimensions, mounting option
SB
Table 3 Stud bolt dimensions (mm) and quantities per valve, mounting option SB
PN 10 PN 16 PN 25 Class 150
Through
studs
Body mounted studs
Through
studs
Body mounted studs
Through
studs
Body mounted studs
Throug
h studs
Body mounted studs
Valve type A Thread Qty L3 Qty L L1 L2 S Thread Qty L3 Qty L L1 L2 S Thread Qty L3 Qty L L1 L2 S Thread Qty L3 Qty L L1 L2 S
L12A 500 127 M24 16 340 8 125 87 87 33 M30 16 340 8 140 102 102 33 M33 16 340 8 140 104 104 31
1 1/8-8
UN
16 340 8 140 106 106 29
L12A 600 154 M27 16 370 8 150 106 106 39 M33 16 390 8 160 116 116 39 M36 16 410 8 170 128 128 37
1 1/4-8
UN
16 370 8 150 108 108 37
L12B 700 165 M27 20 340 8 135 100 71 29 M33 20 380 8 150 119 90 25 M39 20 410 8 165 135 106 24
1 1/4-8
UN
24 440 8 175 151 122 18
L12B 800 190 M30 20 380 8 155 110 80 40 M36 20 410 8 165 124 94 36 M45 20 460 8 190 151 121 34
1 1/2-8
UN
24 510 8 205 173 143 27
L12B 900 203 M30 24 390 8 145 102 82 37 M36 24 420 8 160 119 99 35 M45 24 470 8 185 146 126 33
1 1/2-8
UN
28 520 8 205 169 149 30
L12B 1000 216 M33 24 410 8 165 111 85 44 M39 24 450 8 180 130 104 40 M52 24 520 8 210 164 138 36
1 1/2-8
UN
32 540 8 215 176 150 29
L12B 1200 254 M36 28 520 8 210 153 115 51 M45 28 570 8 230 173 135 46 M52 28 610 8 240 188 150 37
1 1/2-8
UN
40 620 8 260 217 179 51
L12B 1400 279 M39 32 520 8 200 143 100 53 M45 32 580 8 230 173 130 53 M56 32 620 8 240 191 148 45
1 3/4-8
UN
44 610 8 230 186 143 40