Wedge Gate Valve
Wedge Gate Valve
The wedge gate valve gets its name because its sealing surfaces form a certain angle with the vertical center line, that is, the two sealing surfaces are in a wedge shape. Generally speaking, the angles between the sealing surfaces and the vertical center line are 2°52’, 3°30’, 5°, 8° or 10°, etc. The wedge gate valve can be further divided into rising stem gate valves and non-rising stem gate valves, as well as single-disc wedge gate valves and double-disc wedge gate valves. The driving methods include electric, pneumatic, manual, pneumatic-hydraulic, etc., and the connection methods include flange type, welding type and wafer type.
The disc of the wedge gate valve can be made into a whole, which is called a rigid disc and the valve is called the solid wedge gate valve; it can also be made into a disc that can produce a slight deformation and make up for the deviation of the sealing surface angle generated during the machining process. This kind of disc is called an elastic disc, and the valve is called the flexible wedge gate valve.
- The wedge gate valve adopts wedge type gate, because the Angle of the gate is wedge type with the vertical center line, it can be closed more and more tightly in the closing process, further ensuring the sealing effect;
- It adopts a rising stem, which can visually see the opening or closing state of the valve from a distance and is easier to judge. The stem and gate are connected by t-groove, and the t-head of the stem is forged as a whole to ensure sufficient connection strength;
- It is with a sealed design that allows replacement of the packing when fully open. This design ensures that the packing can be replaced online when it needs to be replaced if the packing is damaged, preventing labor waste caused by disassembly of the valve;
- It is designed with the anti-collision protection on the flange surface, which can protect the convex surface connected with the pipe flange during transportation and prevent damage of the valve in collision.
Part Standard
| No | Part | Material |
| 1 | Body | ASTM A216 WCB |
| 2 | Seat Ring | ASTM A105 + 13Cr |
| 3 | Wedge | ASTM A216 WCB + 13Cr |
| 4 | Stem | ASTM A276 410 |
| 5 | Bonnet Gasket | Graphite + SS304 |
| 6 | Bonnet Bolt | ASTM A193 B7 |
| 7 | Bonnet Nut | ASTM A194 2H |
| 8 | Bonnet | ASTM A216 WCB |
| 9 | Backseat | ASTM A182 F6a |
| 10 | Stem Packing | Reinforced Graphite |
| 11 | Handwheel | KTH330-08 |
Licence & Approvals
| CERTIFICATE NAME | INSTITUTION |
| API 600-0351 | American Petroleum Institute |
| API 6D-1225 | American Petroleum Institute |
| ISO 9001:2015 | TQCS INTERNATIONAL (GROUP) PTY LTD\ |
| ISO 14001:2015 | TQCS INTERNATIONAL (GROUP) PTY LTD\ |
| ISO 45001:2018 | TQCS INTERNATIONAL (GROUP) PTY LTD\ |
| Fire Test Certificate API 6FA | TUV SUD SERVICE GMBH |
| CE-2810 | PRESSURE EQUIPMENT DIRECTIVE 2014/68/EU |
The data is for reference only, please consult andy@vokkan.com for details.
Suitable for general application as on/off and isolation valves, not recommended for throttling and/or regulating purposes. They have excellent resistance to earthquake, shocks, vibration, pressure & strokes and can be operated soundly between -196°C to 595°C.
What is a wedge gate valve?
A
What is the difference between solid wedge and split wedge gate valves?
a
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