Bellow seal gate valve. The key part of bellow sealed globe valves is mental below. It is the connection between cover and stems with automatic roll welding. The mental bellow can keep the stem part no leakage.
Application
Steam, thermal oil, rank poison, and strong corrupt gas and liquid medium.
Advantage
1.Bellow seal element. The key part of bellow sealed globe valves is mental below. It is the connection between cover and stems with automatic roll welding. The mental bellow can keep the stem part no leakage.
2.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide an excellent seal.
3. Grease nipple. It can direct lubricate the stem, nut, and sleeve.
4. Ergonomic handwheel. It provides longer service life and easier operation.
Technical specification
Design standard: DIN 3352
Face to face dimension: DIN 3202
Flanged ends: DIN 2543-2545
Test & inspection: DIN 3230
Main part materials
|
NO. |
Part name |
Material |
|
1 |
Body |
GS-C25、1.4301、1.4401 |
|
2 |
Disc |
GS-C25+1.4201/1.4301 |
|
3 |
Seat |
1.4301、Stellite |
|
4 |
Stem |
1.4021、1.4301、1.4401 |
|
5 |
Bellows |
1.4301、1.4401 |
|
6 |
Double-headed bolt |
ASTM 193-B7、A193-B8 |
|
7 |
Nut |
ASTM 194-2H、A194-8 |
|
8 |
Metal gasket |
Asbestos+ Stainless steel |
|
9 |
Nut |
ASTM 194-2H、A194-8 |
|
10 |
Middle yoke |
GS-C25、1.4301、1.4401 |
|
11 |
Double-headed bolt |
ASTM 193-B7、A193-B8 |
|
12 |
Nut |
ASTM 194-2H、A194-8 |
|
13 |
Gasket |
Flexible graphite+ stainless steel |
|
14 |
Cover |
GS-C25、1.4301、1.4401 |
|
15 |
Nut |
ASTM 194-2H、A194-8 |
|
16 |
Packing |
Flexible graphite |
|
17 |
Gland |
GS-C25、1.4301 |
|
18 |
Nut |
ASTM 194-2H、A194-8 |
|
19 |
Jack bolt |
ASTM 193-B7、A193-B8 |
|
20 |
Stem nut |
Copper alloy、D2、BL2 |
|
21 |
Oil cup |
Assemble |
|
22 |
Cap |
1C45、1.4301、1.4401 |
|
23 |
Handwheel |
Carbon steel |
