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Wafer knife gate valve
The knife type gate valve is widely used in coal preparation, ash discharge, slag discharge, urban sewage treatment, food, health, medicine and other professional pipeline system
Application
The knife type gate valve is widely used in coal preparation, ash discharge, slag discharge, urban sewage treatment, food, health, medicine and other professional pipeline system.
Characteristic
• Ultra-short connection length, saving material, greatly reducing the weight of the pipeline system;
• The bottom of the ram is a knife shaped inclined mouth, with the function of cutting off the medium, so that the valve is closed without medium blocking;
• Sealing face sealing has hard seal, soft seal, single seal and double seal and other forms;
• Driving mode: manual, electric, pneumatic, worm gear drive and other forms.
Design Guides
|
Design and manufacture
|
Structure length | Connector size | Inspection and test |
| NB/T47044、JB/T 8691 | GB/T 12221 | GB/T9124.1、JB/T79、 GB/T 17241.6 |
JB/T 8691 |
Product Range
| Nominal pressure | PN2.5、PN6、PN10、PN16 | |
| Nominal size | DN50～DN900 | |
| Body matenal | WCB、A105、25、HT250、HT300、QT400-15、QT450-10 | |
| Test pressure(MPa) | Strength test (Water pressure) | 1.5×P(38℃ pressure rating) |
| Sealing test (Water pressure) | 1.1×P(38℃ pressure rating) | |
| Applicable Temperature | -29℃～425℃ | |
| Applicable medium | Slag water mixture, air ash mixture, dry ash, coal cinder, etc | |
Note：
1、The valve beyond the above specifications can be customized according to user requirements;
2、The applicable temperature range of each valve shall be subject to the actual pressure bearing material of the valve.