Cast steel bellow seal gate valve also be used on steam, hot oil system pipeline.
Product Description
The key component of the bellows seal gate valve is the metal bellows. The connection between the bonnet and the valve stem adopts an automated roll welding technique. The metal bellows effectively ensures a leak-free valve stem section. An ergonomically designed handwheel provides extended durability and facilitates easier operation.
Applications: Suitable for use with steam, heat transfer oil, toxic and highly corrosive gases, as well as liquid mediums.
What is the different between bellow globe valve and bellow gate valve?
1. The bellow seal globe valve more longer than bellow seal gate valve, so pipe line prefer to choice bellow globe valve.
2. Different flow and functions, DIN bellow seal globe valve can not only be used as a cut-off, but also can be used to regulate and control the pressure flow. The bellow seal gate valve is usually used for isolation. Bellow seal globe valve no need full open,the gate valve generally needs to be fully opened or closed.
3. Different installation methods. When use bellow globe valve, the medium can generally be from top to bottom. When medium flow in bellow seal gate valve,there is no no requirement on the direction of import and export.
4. When the bellow seal globe valve working, its handwheel and valve stem are generally rotating together, and will do the lifting action together, the bellow gate valve generally only the handwheel will rotate, besides it only do the lifting action.
Face to face: DIN3202
Flange ends: DIN2543-2546
Design standard: DIN
Test& inspection: DIN3230
Nominal Pressure |
PN |
|
|
Pressure test |
Strength test |
1.4PN |
MPa |
Sealing test |
1.0PN |
||
Gas seal test |
0.5 |
||
-- |
-- |
||
Temputer |
-20℃~425℃ |
Main Material(mostly) it can OEM
NO. |
Part name |
Material |
1 |
Body |
1.4401, SS321,SS304 |
2 |
Seat |
1.4301, Stl |
3 |
Disc |
2Cr13, Stl, 507L |
4 |
Pin |
2Cr13 |
5 |
Bellows |
SS321, SS316 ETC |
6 |
Stem |
1.4401, 2Cr13 |
7 |
Gasket |
Flexible graphite + stainless steel |
8 |
Cover |
GS-C25, 1.4401, SS321,SS304 |
9 |
Nut |
ASTM 194-2H, A194-8 |
10 |
Double-headed bolt |
ASTM 194-B7, A193-B8 |
11 |
Packing |
BY Ply-wooden case |
12 |
Gland |
GS-C25, 1.4301, 1.4401 |
13 |
Locator |
1C25 |
14 |
Stem nut |
Copper alloy, D2, BL2 |
15 |
Hand wheel |
KTH330-08 |
16 |
Cap |
1C45 |
Connection Size (DN15-DN350)
PN 16 |
||||||||
DN |
Main connection size |
|||||||
L |
D |
D1 |
D2 |
b |
f |
H |
n-Φd |
|
15 |
130 |
95 |
65 |
45 |
16 |
2 |
197 |
4-Φ14 |
20 |
150 |
105 |
75 |
58 |
18 |
2 |
197 |
4-Φ14 |
25 |
160 |
115 |
85 |
68 |
18 |
2 |
205 |
4-Φ14 |
32 |
180 |
140 |
100 |
78 |
18 |
2 |
208 |
4-Φ18 |
40 |
200 |
150 |
110 |
88 |
18 |
3 |
230 |
4-Φ18 |
50 |
230 |
165 |
125 |
102 |
20 |
3 |
233 |
4-Φ18 |
65 |
290 |
185 |
145 |
122 |
22 |
3 |
254 |
4-Φ18 |
80 |
310 |
200 |
160 |
138 |
24 |
3 |
277 |
8-Φ18 |
100 |
350 |
235 |
180 |
158 |
24 |
3 |
365 |
8-Φ18 |
125 |
400 |
250 |
210 |
188 |
26 |
3 |
392 |
8-Φ18 |
150 |
480 |
285 |
240 |
212 |
28 |
3 |
420 |
8-Φ22 |
200 |
600 |
340 |
295 |
268 |
34 |
3 |
580 |
12-Φ22 |
250 |
650 |
405 |
355 |
320 |
33 |
3 |
750 |
12-Φ25 |
300 |
750 |
460 |
410 |
375 |
33 |
4 |
925 |
12-Φ25 |
350 |
850 |
520 |
470 |
435 |
34 |
4 |
1030 |
16-Φ25 |
250 |
650 |
405 |
355 |
335 |
32 |
3 |
750 |
12-Φ30 |
300 |
750 |
460 |
410 |
375 |
34 |
4 |
925 |
16-Φ30 |
350 |
850 |
520 |
470 |
435 |
34 |
4 |
1030 |
16-Φ33 |
125 |
400 |
270 |
220 |
188 |
26 |
3 |
410 |
8-Φ26 |
150 |
480 |
300 |
250 |
218 |
28 |
3 |
425 |
8-Φ26 |
200 |
600 |
340 |
310 |
278 |
34 |
3 |
540 |
12-Φ30 |
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