Flexible Wedge Gate Valves, Nonrising Stem
Destination:
This valves are used as industrial fittings within pressure installations, between 25 – 64 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 13%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 OTA20 / STAS 9277
9. Stud bolt Gr.5.8.
10. Nut Gr.5
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 | 50 | 250 | 300 | 165 | 125 | 4×18 | 180 | 20(17) | 22,5 |
80 | 280 | 340 | 200 | 160 | 8×18 | 220 | 24 | 29,125 | |
100 | 300 | 400 | 235 | 190 | 8×22 | 250 | 24 | 40,08 | |
150 | 350 | 526 | 300 | 250 | 8×26 | 320 | 28 | 96,00 | |
200 | 400 | 816 | 360 | 310 | 12×26 | 500 | 30 | 195,00 | |
250 | 450 | 850 | 425 | 370 | 12×30 | 600 | 32 | 265,00 | |
40 | 50 | 250 | 300 | 165 | 125 | 4×18 | 180 | 20(17) | 22,5 |
64 | 50 | 250 | 325 | 180 | 135 | 4×22 | 220 | 26 | 30,00 |
80 | 310 | 390 | 215 | 170 | 8×22 | 280 | 28 | 47,00 | |
100 | 350 | 490 | 250 | 200 | 8×26 | 320 | 30 | 68,70 | |
150 | 450 | 600 | 345 | 280 | 8×33 | 360 | 36 | 147,60 | |
200 | 550 | 810 | 415 | 345 | 12×36 | 500 | 42 | 205,00 | |
250 | 650 | 940 | 470 | 400 | 12×36 | 630 | 46 | 276,00 | |
400 | 950 | 1250 | 670 | 585 | 16×42 | 710 | 60 | 940,00 | |
500 | 1150 | 1460 | 800 | 705 | 20×48 | 1000 | 68(62) | 1430 |
Working and constructive characteristics
About constructive features, the product is designed in accordance with DIN 3352:
- construction length:
- DIN 3202-F5 (PN 25);
- DIN 3202-F7 (PN 40 and 64);
- connecting flanges: DIN 2501, part 1;
- sealing surfaces: DIN 2526, “C” type;
- sealing: 13% Cr/13% Cr;
- body: straight with flanges;
- closing element: flexible wedge gate;
- actuating stem: nonrising, with thread;
- mounting position: indifferent;
- closing achieved by means of handwheel.
Working and testing regime
Nominal pressure bar |
Temperature °C |
Testing pressure bar |
||
120° | 150° | Strength | Tightness | |
Max. working pressure, bar | ||||
25 | 25 | 20 | 38 | 28 |
40 | 40 | 35 | 60 | 44 |
64 | 64 | 50 | 96 | 70 |