
Characteristice:
This valve is applicable for discharge and transportation of dry ash systmstems in power plants and storehouse pumps,or can be used as an on-off for pipelines containing abrasive dry ash. Water(such as cinder water) and the like in mines, papermaking, chemical engineering and so on, as an on-off for pipe lines with both soft grains and corrosive media, lts working nominal pressure is 1.MPa applicable temperature¡Ü200¡æ, and air supply pressure 0.6-0.8MPa.
After the valve is closed, it¡¯s fully sealed in any direction, it¡¯s middle body adopts WCB steel casting and seamless steel pipe welding, Its sealing surface adopts a hard sealing element.
Its feed inlet is fully through without any blocks. And it has an antl-blockage blowing unit, with strong abrasion resistance. a good seal blowing unit, with strong abrasion resistance, a good seal ability, a small starting load and with little ash seizure or accumulation.
It adopts a high-grade toughened structural ceramic seal, featuring high-mechanical strength, strong abrasion resistance. a long service life and a compact structure, which can ben installes at any angle.
Materials for main parts
| Item | Name | Material | Item | Name | Material | 
| 1 | Body | WCB | 7 | Packing | Flexible Graphite | 
| 2 | Plate | WCB+Composite ceramic | 8 | Packing gland | 2Cr13 | 
| 3 | Seat | Composite engineering ceramic | 9 | Spring | 50CrVA | 
| 4 | Plate seat | 45# | 10 | Pneumatic device | 
 | 
| 5 | Stem | 2Cr13 | 11 | Nut | 25 | 
| 6 | Middle body | WCB | 12 | Stud | 35CrMoVA | 
Application specification
| Design and manufacture | CB/T12224 | ||
| Connection end dimension | Structural length | Manufacturer¡¯s standard | |
| Flange dimension | JB/T 79.1 | ||
| Inspection and test | GB/T 9092 | ||
| Material | Carbon steel | GB/T 12229 | |
| Stainless steel | GB/T 12230 | ||
| Mark | GB/T 12220 | ||
| Supply | GB/T 12252 | ||





