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 

  1. Reasonable product structure, reliable sealing, excellent performance,   beautiful appearance;

  2. Surfacing Co-based   hard alloy on the sealing surface, wear resistance, corrosion resistance,   good friction resistance and long service life;

  3. The valve stem is   tempered and the surface is nitrided, which has good anti-corrosion and   anti-friction properties;

  4. Double sealing, more   reliable performance;

  5. The valve stem   lifting position indication is more intuitive;

  6. 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 1.73631.43081.44081.43061.4301

2

Disc

ASTM A182-Gr.F6a ASTM A182-F22 ASTM   A182-F304F316F321F304LF316L

3

Pin

ASTM A182-Gr.F6a ASTM A182-F22 ASTM   A182-F304F316F321F304LF316L

4

Stem

ASTM A182-Gr.F6a ASTM A182-F22 ASTM   A182-F304F316F321F304LF316L

5

Bellows

1Cr18Ni9Ti304316

6

Bonnet

GS-C25 1.73631.43081.44081.43061.4301

7

Packing

Flexible graphite

8

gland

GS-C25 1.73631.43081.44081.43061.4301

9

Stem nut

WCBQT400-18

10

Handwheel

Copper alloy

11

 bolts

ASTM A193-B7A320-B8A193-B8M

12

Nuts

ASTM A194-2HA194-8A194-8M

13

Gasket

Flexible graphite+SS

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