airtight ventilation butterfly valve
airtight ventilation butterfly valve
The airtight ventilation butterfly valve is used on the inlet, outlet or bypass flue of the absorption tower of the flue gas desulfurization system, or in the flue gas denitration and flue gas dust removal system. It usually adopts the shutter double-layer baffle structure. When it is turned off, the sealing gas is connected between the double-layer baffles to realize the function of isolating and turning off the flue gas. 
| Suitable size | DN 100 – DN4800mm |
| Working pressure | ≤0.25Mpa |
| Leakage rate | ≤1% |
| temp. | ≤300℃ |
| Suitable medium | gas, flue gas, waste gas |
| No | Name | Material |
| 1 | Body | carbon steel Q235B |
| 2 | Disc | carbon steel Q235B |
| 3 | Stem | SS420 |
| 4 | Bracket | A216 WCB |
| 5 | Packing | Flexible graphite |
Tianjin Tanggu Jinbin Valve Co., Ltd. was founded in 2004, with registered capital of 113 million yuan, 156 employees, 28 sales agents of China,covering an area of 20,000 square meters in total, and 15,100 square meters for factories and offices.It is a valve manufacturer engaged in professional R&D, production and sales,a joint-stock enterprise integrating science, industry and trade.
The company now has 3.5m vertical lathe, 2000mm * 4000mm boring and milling machine and other large processing equipment, multi-functional valve performance testing device and a series of perfect testing equipment
