Brief Analysis of Angle Bellows Globe Valve
◆ Application
Angle bellows globe valve is suitable for opening or closing of pipelines of various working conditions such as petroleum, chemical, pharmaceutical, chemical fertilizer, power industry, etc. with nominal pressure PN1.6 ~ 16MPa and working temperature -29 ~ 350 ℃.
◆ The main structural features
Reasonable product structure, reliable sealing, excellent performance, beautiful appearance;
Surfacing Co-based hard alloy on the sealing surface, wear resistance, corrosion resistance, good friction resistance and long service life;
The valve stem is tempered and the surface is nitrided, which has good anti-corrosion and anti-friction properties;
Double sealing, more reliable performance;
The valve stem lifting position indication is more intuitive;
The material of the parts, the size of the flange and the number of butt welding can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.
◆ Technical Specification
Configuration | BB-BG-OS & Y |
Operation | Handwheel |
Electric | |
Design standard | DIN3356 |
Face to face standard | DIN3202 |
Flange standard | DIN2543-2545 |
Inspection and Test | DIN3230 |
◆ Product performance specifications
PN (MPa) | Shell test pressure (MPa) | Seat test pressure(MPa) | Suitable Temp.(℃) | Suitable medium |
1.6 | 2.4 | 1.76 | ≤350℃ | Water, steam, oil, etc |
2.5 | 3.75 | 2.75 | ||
4.0 | 6.0 | 4.4 | ||
6.4 | 9.6 | 7.04 |
◆Main part material
Item | Name | Material |
1 | Body | GS-C25 1.7363、1.4308、1.4408、1.4306、1.4301 |
2 | Disc | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、F316、F321、F304L、F316L |
3 | Pin | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、F316、F321、F304L、F316L |
4 | Stem | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、F316、F321、F304L、F316L |
5 | Bellows | 1Cr18Ni9Ti、304、316 |
6 | Bonnet | GS-C25 1.7363、1.4308、1.4408、1.4306、1.4301 |
7 | Packing | Flexible graphite |
8 | gland | GS-C25 1.7363、1.4308、1.4408、1.4306、1.4301 |
9 | Stem nut | WCB、QT400-18 |
10 | Handwheel | Copper alloy |
11 | bolts | ASTM A193-B7、A320-B8、A193-B8M |
12 | Nuts | ASTM A194-2H、A194-8、A194-8M |
13 | Gasket | Flexible graphite+SS |