big size rubber wedge gate valve, which can be used in water supply and drainage project.
big size rubber wedge gate valve technical specification:
Size: DN700-DN1200
Valve Design: EN 1171/ BS5163/ EN 1074-1&2/ AWWA C509/C515
Face to Face: BS5163/ EN558-1 Series 13/ ANSI B16.10
Flange Drilling: EN 1092-2/ ISO 7005-2/ ANSI B16.1/ B16.42
Hydraulic Test: EN 12266/ ISO 5208/ AWWA C515/ C509
Shell Test Pressure: 24 bar/ 375PSI
Sealing Test Pressure: 17.6 bar/ 275PSI
The main advantages of gate valve include:
1. The fluid resistance of the valve is small. Because the valve body of gate valve is straight-through type and the flow of the medium doesn’t change direction, the fluid resistance of it is small compared with other kinds of valves.
2. The sealing performance is better than that of other shut-off valve. The opening and closing of it is more conveniently.
3. The range of applications is more wider. In addition to steam, oil and other media, it can be used in medium containing granular solid and with a large viscosity. It can also be used as air-venting valve and low vacuum system valve.
4. Gate valve has dual flow directions. It’s not subject to the flow directions of the medium. Therefore, it is suitable for use in pipeline where the medium may change the flow direction. It is also easy to install.
big size rubber wedge gate valve material list
Item No. | Part Name | Specification |
1 | Body | Ductile Iron EN-GJS-500-7 |
2 | Wedge | Ductile Iron EN-GJS-500-7 |
3 | Wedge Coating | NBR/ EPDM EN681-1 |
4 | Wedge Nut | Copper Alloy |
5 | Stem | Stainless Steel X20 Cr13 |
6 | O Ring Back Sealing | NBR/ EPDM |
7 | Bonnet Gasket | NBR/EPDM EN681-1 |
8 | Bonnet | Ductile Iron EN-GJS-500-7 |
9 | Packing Cork | Cooper Alloy |
10 | O-Ring | EPDM/ NBR |
11 | Packing O-Ring | EPDM/ NBR |
12 | Gland Flange | Ductile Iron EN-GJS-500-7 |
13 | York | Ductile Iron EN-GJS-500-7 |
14 | Stem Nut | Cooper Alloy |
15 | Hand Wheel | Ductile Iron EN-GJS-500-7 |
