Forged Steel Bellow Seal Gate Valve
Forged steel bellows seal gate valve is generally of small diameter, from DN15 to DN50. It can be used in some high-pressure steam pipelines.
Product Description
The Forged Steel Bellows Seal Gate Valve utilizes formed multi-layer bellows welded to the bottom of the valve stem and valve bonnet, creating a gas-tight seal or non-permeable barrier. There are multiple materials available for the bellows, making it suitable for almost all corrosive chemical applications.
Forged Steel Bellow Seal Gate Valve Advantage
Why forged steel bellow seal gate valve much better in high pressure steam pipelines?
1. Forged steel bellow seal gate valve use the forging process.
The process of forging is better than that of casting, but the cost will be higher.
2. The forging progress has no sand holes, so forged steel bellow seal valve is more resistant to high pressure and high temperature.
3. Which is more corrosion resistant and have a longer service life.
4. Bellow seal gate valves are lighter than normal gate valve in open and off.
Forged Steel Bellow Seal Gate Valve Applications:
Designed for applications that do not permit valve leakage or seepage, such as heat transfer oil, toxic fluids, steam, and regulating media.
As a professional bellow seal valves manufacturer, AFBV bellows technology prevents corrosive or harmful atmospheric conditions from entering the process.
Technical specification
Face to face: DIN3202, ANSI, GB
Flange ends: DIN2543-2546, ANSI, GB
Design standard: DIN, GB, ANSI
Test& inspection: DIN3230, GB, ANSI
|
Nominal Pressure |
PN |
|
|
|
Pressure test |
Strength test |
2PN |
MPa |
|
Sealing test |
1.5PN |
||
|
Gas seal test |
0.8 |
||
|
-- |
-- |
||
|
Temputer |
-20β~425β |
||
Main Material(mostly) it can OEM
|
NO. |
Part name |
Material |
|
1 |
Body |
A105, F304, F316 |
|
2 |
Seat |
F304 |
|
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 |
|
PN 25 |
||||||||
|
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 |
8-Φ18 |
|
80 |
310 |
200 |
160 |
138 |
24 |
3 |
277 |
8-Φ18 |
|
100 |
350 |
235 |
190 |
162 |
24 |
3 |
355 |
8-Φ22 |
|
125 |
400 |
270 |
220 |
188 |
26 |
3 |
410 |
8-Φ26 |
|
150 |
480 |
285 |
240 |
212 |
28 |
3 |
420 |
8-Φ26 |
|
200 |
600 |
340 |
310 |
278 |
30 |
3 |
540 |
12-Φ26 |
|
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 |
|
PN 40 |
||||||||
|
15 |
130 |
95 |
65 |
45 |
16 |
2 |
195 |
4-Φ14 |
|
20 |
150 |
105 |
75 |
58 |
18 |
2 |
195 |
4-Φ14 |
|
25 |
160 |
115 |
85 |
68 |
18 |
2 |
207 |
4-Φ14 |
|
32 |
160 |
140 |
100 |
68 |
18 |
2 |
218 |
4-Φ18 |
|
40 |
180 |
150 |
110 |
78 |
18 |
3 |
225 |
4-Φ18 |
|
50 |
230 |
165 |
125 |
102 |
20 |
3 |
230 |
4-Φ18 |
|
65 |
290 |
185 |
145 |
122 |
22 |
3 |
272 |
8-Φ18 |
|
80 |
310 |
200 |
160 |
138 |
24 |
3 |
290 |
8-Φ18 |
|
100 |
350 |
235 |
190 |
162 |
24 |
3 |
355 |
8-Φ22 |
|
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 |
