Gate Valves Knife gate
Unidirectional Seal Knife Gate Valve for Slag Disposal, DN150-700
Unidirectional-seal knife gate valve for slag and solid-media disposal service.
Quick Specifications
- Type
- Knife gate valve
- Series
- QDY Series
- Seal Direction
- Unidirectional
- Configuration
- Wafer, unidirectional
- Connection
- Wafer
- Operation
- Manual, pneumatic, electric, hydraulic, gear, lever
Product Details
The QDYZ73X is the wafer knife gate valve listed in the QDY series for slag disposal and solid-media service. It uses unidirectional sealing, with materials selected for the abrasive medium. The existing description states that working pressure decreases as valve size increases.
Listed configuration
- Size Range: DN150 – DN700
- Pressure Rating: 1.0 / 0.7 / 0.5 / 0.3 MPa
- Body / Main Material: F55, F53, 2205, CF3M, CF8, WCB, GGG40
- Seat / Seal Material: NBR, EPDM, FKM; Packing aramid / high-water fiber / PTFE / rubber
The pressure values above are a series listing, not a size-to-pressure schedule. Confirm the permitted working pressure for the selected size and material combination before ordering.
Specifications
| Parameter | Value |
|---|---|
| Model / Series | QDYZ73X |
| Product Family | Knife Gate Valve |
| Catalog Name | Unidirectional Seal Knife Gate Valve (Slag Disposal) |
| Size Range | DN150 - DN700 |
| Pressure Rating | 1.0 / 0.7 / 0.5 / 0.3 MPa |
| Body / Main Material | F55, F53, 2205, CF3M, CF8, WCB, GGG40 |
| Seat / Seal Material | NBR, EPDM, FKM; Packing aramid / high-water fiber / PTFE / rubber |
| End Connection | Wafer; JB/T8691-2013, GB/T9113.1-2010, ASME B16.5 (2"-24"), ASME B16.47 (26"-60"), AS2129 Table D/E |
| Actuation | Handwheel, gear, pneumatic, electric, hydraulic, sprocket, electro-hydraulic, lever |
| Typical Application | Slurry, municipal sewage treatment, sugar industry, papermaking, pharmaceuticals, chemical industry |
FAQ
What should be confirmed before ordering?
Confirm the model, DN size, body/gate material, seat material, pressure class, flange standard, medium and actuator option against the selected catalog drawing.
Does one series cover all materials and sizes?
No. Materials, dimensions and pressure limits depend on the exact model suffix and DN size shown in the catalog material and dimension tables.
Can an actuator be supplied?
Manual, pneumatic, electric and other actuation options are catalog-dependent. Confirm the actuator type, control mode and mounting details for the final valve selection.
Which documents should be requested?
Request the current dimensional drawing, material list, inspection requirement and final technical confirmation for the selected model and size.
Need This Product for Your Project?
Send us your required size, material, pressure rating, quantity or applicable standard, and our team will review your requirement.
