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There are three kinds of forged steel gate valve bonnet design, the first is a bolt type bonnet, through the concave and convex surface connection, stainless steel band and flexible graphite wound gaskets, ring joint may be adopted according to the demand, the second is welding type bonnet, after thread sealing welding, and the rigid welding according to the requirements can be directly used, the third is the sealing bonnet, since the seal bonnet joint with thread.
Materials :
|
No. |
Name of parts |
CS to ASTM |
AS to ASTM |
SS to ASTM |
|
|
A105 |
F22 |
F304(L) |
F316(L) |
||
|
1 |
Body |
A105 |
A182F22 |
A182F304(L) |
A182F316(L) |
|
2 |
Seat |
A276420 |
A276304 |
A276304(L) |
A276316(L) |
|
3 |
Disc |
A182F430&410 |
A182F304 |
A182F304(L) |
A182F316(L) |
|
4 |
Stem |
A182F6 |
A182F304 |
A182F304(L) |
A182F316(L) |
|
5 |
Gasket |
316 with Graphite |
316 with PTFE |
||
|
6 |
Bonnet |
A105 |
A276f304 |
A276F304(L) |
A276F316(L) |
|
7 |
Bolt |
A193B7 |
A193B16 |
A193B8 |
A193B8M |
|
8 |
Pin |
A276420 |
A276 304 |
||
|
9 |
Packing bushing |
A276410 |
A182F304(L) |
A182F316(L) |
|
|
10 |
Swing bolt |
A193B7 |
A193B16 |
A193B8 |
A193B8M |
|
11 |
Packing gland |
A105 |
A182F11 |
A182F304(L) |
A182F316(L) |
|
12 |
Nuts |
A1942H |
A1944 |
A1948 |
A1948M |
|
13 |
Stem nuts |
A276420 |
|||
|
14 |
Lock nut |
A1942H |
A1944 |
A1948 |
A1948M |
|
15 |
Nameplate |
SS |
|||
|
16 |
Hand wheel |
A197 |
|||
|
17 |
Gaskets |
A473431 |
|
||
|
18 |
Packing |
Graphite |
PTFE |
||
|
Suitable medium |
Water, steam, oil, etc |
Water, steam, oil, etc |
Nitric acid, acetic acid, etc |
||
|
Suitable temperature |
—29℃～425℃ |
—29℃～550℃ |
—29℃～200℃ |
||
Dimensions(MM) and Weight(KG)
|
NPS |
Hole shrinkage |
3/8" |
1/2" |
3/4" |
1" |
1 1/4" |
1 1/2" |
2" |
|
|
Overall diameter |
|
3/8" |
1/2" |
3/4" |
1" |
1 1/4" |
1 1/2" |
2" |
|
|
L |
79 |
79 |
92 |
111 |
120 |
120 |
140 |
178 |
|
|
H(Open) |
158 |
158 |
169 |
197 |
236 |
246 |
283 |
330 |
|
|
W |
100 |
100 |
100 |
125 |
160 |
160 |
180 |
200 |
|
|
Weight |
Bolt type |
2.1 |
2.0 |
2.3 |
4.3 |
5.9 |
6.9 |
11.1 |
15.2 |
|
Welded type |
1.8 |
1.7 |
2.0 |
3.8 |
5.1 |
6.1 |
10.2 |
14.2 |
|
