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 |