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Valves:
forged and cast high pressure valves: control, stop, check, blow down, globe, gate, ball,
piston, bellows sealed, instrument
Level gauges: magnetic level gauges, glass level gauges: transparent, reflex, bicolor
Cesare Bonetti - BONT - CMI Pasquini |
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Last Update
29-01-2010 |
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TECHNICAL NEWS
March 30th, 2001
Some maintenance people is often asking us the correct
torque value for Body/Bonnet bolting of Bonetti
Piston Valves.
Provided that must be used only original BONETTI
graphite rings (patented), standard Body/Bonnet bolting Nm torques are as per
following table.
Torques are tested for Piston Valves operated at temperature and pressure according
indicated ratings.
The Fig. No. is referred to the Valve Fig. shown in our
Piston valve Catalogue.
For special applications please contact our Technical
Department.
Tipo |
Fig. |
Rating |
DN |
Nm |
|
Tipo |
Fig. |
Rating |
DN |
Nm |
BV |
1018 |
PN 16 |
3/8" |
5 |
|
BV |
1080 |
PN 40 |
10 |
5 |
| |
" |
" |
1/2" |
5 |
|
|
" |
" |
15 |
5 |
| |
" |
" |
3/4" |
6 |
|
|
" |
" |
20 |
5 |
| |
" |
" |
1" |
6 |
|
|
" |
" |
25 |
6 |
| |
" |
" |
1.1/4" |
8 |
|
|
" |
" |
32 |
8 |
| |
" |
" |
1.1/2" |
9 |
|
|
" |
" |
40 |
9 |
| |
" |
|
2" |
10 |
|
|
" |
" |
50 |
10 |
BVR |
1018 |
PN 16 |
3/4" |
5 |
|
Bve |
1022 |
PN 40 |
65 |
20 |
| |
" |
" |
1" |
6 |
|
|
" |
" |
80 |
18 |
BV |
|
800 |
3/8" |
8 |
|
|
" |
" |
100 |
20 |
| |
|
" |
1/2" |
10 |
|
|
" |
" |
125 |
27 |
| |
1077 |
" |
3/4" |
12 |
|
|
" |
" |
150 |
28 |
| |
1078 |
" |
1" |
17 |
|
|
" |
" |
200 |
50 |
| |
1079 |
" |
1.1/4" |
18 |
|
BVR |
1075 |
PN 16 |
15 |
5 |
| |
|
" |
1.1/2" |
18 |
|
|
" |
" |
20 |
5 |
| |
|
|
|
|
|
|
" |
" |
25 |
6 |
BVR |
|
800 |
1/4" |
8 |
|
|
" |
" |
32 |
6 |
| |
|
|
3/8" |
8 |
|
|
" |
" |
40 |
8 |
| |
1077 |
" |
1/2" |
8 |
|
|
" |
" |
50 |
9 |
| |
1078 |
" |
3/4" |
10 |
|
BVR |
1076 |
PN 40 |
15 |
5 |
| |
1079 |
" |
1" |
12 |
|
|
" |
" |
20 |
5 |
| |
|
" |
1.1/4" |
17 |
|
|
" |
" |
25 |
6 |
| |
|
" |
1.1/2" |
18 |
|
|
" |
" |
32 |
6 |
| |
|
" |
2" |
18 |
|
|
" |
" |
40 |
8 |
BV |
1010 |
PN 16 |
10 |
5 |
|
|
" |
" |
50 |
9 |
| |
" |
" |
15 |
5 |
|
BV |
1053 |
150 |
1/2" |
5 |
| |
" |
" |
20 |
6 |
|
BVR |
1053 |
" |
3/4" |
6 |
| |
" |
" |
25 |
6 |
|
|
" |
" |
1" |
6 |
| |
" |
" |
32 |
8 |
|
|
" |
" |
1.1/2" |
9 |
| |
" |
" |
40 |
9 |
|
|
" |
" |
2" |
10 |
| |
" |
" |
50 |
10 |
|
BVe |
1023 |
" |
3" |
18 |
BVn |
1045 |
PN 16 |
65 |
10 |
|
|
" |
" |
4" |
20 |
| |
" |
" |
80 |
5 |
|
|
" |
" |
6" |
28 |
| |
" |
" |
100 |
5 |
|
BV |
1039 |
300 |
1/2" |
5 |
| |
" |
" |
125 |
14 |
|
|
" |
" |
3/4" |
6 |
| |
" |
" |
150 |
12 |
|
|
" |
" |
1" |
6 |
BVe |
1021 |
PN 16 |
65 |
12 |
|
|
" |
" |
1.1/2" |
9 |
| |
" |
" |
80 |
8 |
|
|
" |
" |
2" |
10 |
| |
" |
" |
100 |
8 |
|
BVd |
1024 |
" |
3" |
18 |
| |
" |
" |
125 |
18 |
|
|
" |
" |
4" |
20 |
| |
" |
" |
150 |
16 |
|
|
" |
" |
6" |
28 |
| |
" |
" |
200 |
40 |
|
BVe |
|
300 |
8" |
50 |
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