Project Description
AS2638 resilient seat gate valve, which can be used in water supply and drainage project.
AS2638 resilient seat gate valve technical specification:
Valve Design: AS2638
Face to Face: AS2638
Flange Drilling: AS2129 Table E
Hydraulic Test: ISO 5208
Shell Test Pressure: 24 bar
Sealing Test Pressure: 17.6 bar
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.
resilient seat gate valve Material List
| Item No. | Part Name | Specification |
| 1 | Body | Ductile Iron AS 1831 500-7 |
| 2 | Wedge | Ductile Iron AS 1831 500-7 |
| 3 | Wedge Coating | NBR/ EPDM EN681-1 |
| 4 | Wedge Nut | Copper Alloy |
| 5 | Stem | Stainless Steel X20 Cr13 |
| 6 | Bonnet Gasket | NBR/ EPDM EN681-1 |
| 7 | Bonnet | Ductile Iron AS 1831 500-7 |
| 8 | O Ring Back Sealing | EPDM/ NBR |
| 9 | Stem Washer | PTFE |
| 10 | O-Ring | EPDM/ NBR |
| 11 | O-Ring | EPDM/ NBR |
| 12 | Stuffing Bearing | Brass |
| 13 | Gland Flange | Ductile Iron AS 1831 500-7 |
| 14 | Dust Guard | EPDM/ NBR |
| 15 | Hand wheel | Ductile Iron AS 1831 500-7 |
| 16 | Stem Cap | Ductile Iron AS 1831 500-7 |
