Valves and Chokes | Cast Steel Ball Valves

Cast Steel Ball Valves
Destination:

This valves are used as tight shut-off fittings for a complete or partial shutting-off into transport and distribution installations.
Working medium: water, gases, petroleum products and other similar fluids, with low corrosion, exclusive hydrogen, mixtures of hydrogen, as well as aggressive mediums with sulphur or sulphuretted hydrogen.

Contents

1. Connecting flange 410-620 / SR ISO 9477
2. Body 410-620 / SR ISO 9477
3. Sphere 42CrMo 4/ SR EN 10083
4. Seat PTFE
5. Rod IC45 / SR EN 10083
6. Spacer CuSn12 / Bronze
7. Stuffing box IC45 / SR EN 10083
8. Cam 42CrMo4 / SR EN 10083
9. Lever 42CrMo4 / SR EN 10083
10. Washer S235JR / SR EN 10027
11. Sealing pack nonasbestos
12. “O”-ring rubber
13. “O”-ring rubber
14. Nut IC45 / SR EN 10083
15. Washer SR 7666-2
16. Stud bolt STAS 8121 / 2

Technical and constructive characteristics

Pn
bar
Dn
mm in
Dred
mm
L
mm
d1
mm
d2
mm
n x d3 b
mm
H (inf)
mm
B
mm
Net weight
25 50 2 1/16 - 315(295) 165 125 4 x d18 20 135 230 14,200
65 2 9/16 49 241 185 145 8 x d18 24 146 230 18,200
80 3 1/8 64 283 210 168,5 8 x d22 28 155 320 25,500
140 50 2 1/16 - 295 165 127 8 x d18 34 145 290 44,00
80 3 1/8 - 359 230 168,5 8 x d22 40 195 320 86,00

Constructive characteristics of the main components:

About constructive features, the valves include:

  • Intermediary body (one or two pieces)
  • Connecting flange
  • Closing element: sphere

Body-flange sealing, achieved on cone by means of sealing rings ( PTFE seat).
The actuating about the closing element (sphere) achieved by means of lever and nonascending stem.
Packing stem: nonasbestos gaskets.

Passing direction: two-way
Mounting position: indifferent
Current sealing: carbon steel-PTFE
On request sealing: stainless steel-PTFE

Working and testing regime

Nominal pressure, bar Working pressure, bar Testing pressure, bar
Strength Tightness
25 25 1,5 x PN (38 bar) 1,1 x PN (27,5 bar)
140 140 2 x PN (280 bar) 1x PN (140 bar)
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