Valves and Chokes | Flexible Wedge Gate Valves, Rising Stem

Flexible Wedge Gate Valves, Rising Stem
Destination:

This valves are used as industrial fittings within low pressure installations up to 25 bar.
Working medium: water, steam, 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.
Working temperature: -10 ÷ 225oC

Contents:

1. Body OTA20/STAS 9277
2. Sealing ring 17%Cr
3. Seat OTA20 / STAS 9277
4. Stem 13%Cr
5. Gasket Marsit MU 275-500
6. Cover OTA20 / STAS 9277
7. Gasket nonasbest
8. Handwheel subassy
9. Stud bolt IC45/SR EN10083
10. Nut IC45/SR EN10083

Technical and constructive characteristics

PN
bar
DN
mm
L
mm
H
mm
d1
mm
d2
mm
n x d3 D
mm
b
mm
Net weight
25 200 400 1000 360 310 12x26 600 30 175
250 450 1173 425 370 12x30 600 32 290


Working and constructive characteristics

About constructive features, the product is designed in accordance with DIN 3352:
  • construction length: DIN 3202-F5 (PN 25);
  • connecting flanges: DIN 2501, part 1;
  • sealing surfaces: DIN 2526, "C" type;
  • sealing: 17% Cr/ 17% Cr;
  • body: straight with flanges;
  • closing element: flexible wedge gate;
  • actuating stem: rising, with thread;
  • mounting position: indifferent;
  • closing achieved by means of handwheel.

Working and testing regime

Nominal pressure, bar Temperature,°C Testing pressure, bar
120 200 250 Strength Tightness
Max. working pressure, bar
25 25 22 20 38 28
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