Pneumatic multi-layer hard seal butterfly valve
详情介绍
product description
Pneumatic multi-level hard seal butterfly valve D643H is a long life, energy saving butterfly valve. Its structure adopts the design of three-dimensional braided heart principle, the valve seat adopts the multi-layer structure with the compatibility of hard and soft seal, the processing is exquisite and the technology is advanced. The product is composed of valve body, butterfly plate, multi-layer seat, stem, transmission mechanism and other main components. Therefore, it is widely used in metallurgy, electric power, petroleum, chemical industry, air, gas, combustible gas, water supply and drainage and other corrosive media pipeline.
Pneumatic multi-layer hard seal adjustment parameters
| DN | DN（mm） | 50～2000 | 50～500 | |||
| PN | PN（MPa） | 0.6 | 1.0 | 1.6 | 2.5 | 4.0 |
| Test pressure | Shell test | 0.9 | 1.5 | 2.4 | 3.75 | 6.0 |
| Seal test | 0.66 | 1.1 | 1.76 | 2.75 | 4.4 | |
| Air Seal Test | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | |
| leakage rate | ＜0.1×DNmm3/s(in accordance with GB/ t13927-92 standard) | |||||
| applicable temperature | Wcb:-29℃～425℃ SUS-40℃～600℃ | |||||
| Applicable medium | Air, water, steam, gas, oil and acid, alkali, salt with a weak corrosive medium | |||||
| Driving mode | Worm and worm gear transmission, gas transmission, electrical transmission | |||||
Pneumatic multi-layer hard seal butterfly material
| Part Name | materials |
| valve body | Cast iron, stainless steel, chromium molybdenum steel, alloy steel |
| Disc | WCB,Alloy Steel,SUS,CR-MO |
| seal ring | Stainless steel and high temperature resistant asbestos panels are combined into multiple layers |
| valve rod | 2Cr13、1Cr13stainless steel, chromium molybdenum steel |
| bearing | Austenitic stainless steel, 304 n |
| packing | Graphite |
Pneumatic multi-layer hard seal butterfly connection dimensions
