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Cast Steel Globe Valves

China BS 1873 cast steel globe valves
Category: Globe Valves
Product Line: Cast Steel Globe Valves

 

 

 

 

 

Features of BS 1873 Cast Steel Globe Valves

• Conicial Disc

• Welded Seat

• OS & Y- Outside Screw and Yoke

• Rising Handwheel

• Bolted Bonnet/Pressure Seal Globe Valve

• Impact Handwheel Optional

• Gear Optional

 

Standards of BS 1873 Cast Steel Globe Valves

• Design - BS1873/ASME B16.34

• Face to Face - ASME B16.10

• BW End - ASME B16.25

• RF End - ASME B16.5

• Inspection & Test - API 598

• Special - NACE MR-01-75

 

BS 1873 Cast Steel Globe Valves Drawing

China cast steel globe valves drawing

 

Design Features of Cast Steel Globe Valves

A. Stem nut uses aluminum bronze material. Large valve is provided with thrust bearing to make it opened easily and flexibly.

B.Two-piece design of packing gland to avoid stem clogging caused by squishing.

C.Packing uses flexible graphite for dependable sealing performance. If requested by users,packing spacer ring and greasing mechanism can be available.

D. Back seal design to ensure dependable packing and sealing when valve is fully opened. (Replacement of packing under pressure is not recommended).

E. Lift stem, with a piece of hard stainless steel inlaid between stem head and disc to avoid deformation caused by extrusion, and corrosion leading to inflexibility of disc action.      

 

Types of Disc

The seal of globe valve is mainly designed to the following two types
1.Flat Seal
2.Conical Seal

disc types of cast steel globe valve

 

Material List of Cast Steel Globe Valves

No.

Part Name

Carbon Steel

Stainless Steel

Low Temperature
Steel

1

Body

A216 GR WCB

A351 GR CF8

A352 GR LCB

2

Seat

A105

A351 GR CF8

A182 GR F304

3

Disk

A216 GR WCB

A351 GR CF8

A352 GR LCB

4

Stem

A276 TYPE 410

A276 TYPE 304

A276 TYPE 304

5

Stud

A193 GR B7

A193 GR 8

A193 GR 8

6

Nut

A194 GR 2H

A194 GR B8

A194 GR B8

7

Back Seat

A182 GR F6a

A182 GR F304

A182 GR F304

8

Gasket

Graphite+SS304

Graphite+SS304

Graphite+SS304

9

Packing

Graphite

Graphite

Graphite

10

Pin

A194 GR 2H

A276 TYPE 304

A276 TYPE 304

11

Packing Bushing

A182 GR F6a

A182 GR F304

A182 GR F304

12

Eyebolt

A193 GR B7

A193 GR B8

A194 GR B8

13

Eyebolt Nut

A194 GR 2H

A193 GR 8

A194 GR B8

14

Gland

A216 GR WCB

A351 GR CF8

A352 GR LCB

15

Bonnet

A216 GR WCB

A351 GR CF8

A352 GR LCB

16

Stem Nut

B148 UNS C95600

B148 UNS C95600

B148 UNS C95600

17

Handwheel

A197

A197

A197

18

Handwheel Nut

A108 GR 1020

A182 GR F304

A182 GR F304

 

Dimension & Weight of BS 1873 Cast Steel Globe Valves

BS 1873 Cast Steel Globe Valves Class 150

BS 1873 Cast Steel Globe Valves Class 300

BS 1873 Cast Steel Globe Valves Class 600

 

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