Fire Signal Butterfly Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
BWSX linear fire special signal wafer butterfly valves
The introduction
BWSX linear fire special signal wafer butterfly valve is the introduction of foreign advanced technology and self-developed linear butterfly valve, BWSX linear fire special signal wafer butterfly valve has advantages of a simple structure, reliable sealing, light open, long service life and easy maintenance, etc. It is widely used in the pipelines of water supply and drainage, building and fire and other systems, especially in the fire pipeline. BWSX linear fire special signal wafer butterfly valve can unmistakably show the valve open and close state, with an intuitive, clear, reliable fire protection system reflection of the working state, so it is widely used in fire protection system.
Dimensions & constructral diagram
BWSX linear fire special signal wafer butterfly valve constructral diagram(pic1)
BWSX linear fire special signal wafer butterfly valve constructral diagram(pic2)
Main technical parameter
| nominal diameter | nominal pressure | working temperature | sealing test | light test | applicable mediun |
| DN50-400mm | 1.0/1.6/2.5Mpa | -10℃-80℃ | 1.1times of nominal pressure | 1.5 times of nominal pressure | water,oil,gas |
The materials of main parts
| No. | part name | materials | No | part name | materials |
| 1 | body | ductile iron, cast steel | 7 | sealing ring | NBR, EPDM |
| 2 | shaft | SUS410/SUS316 | 8 | gasket | SUS316/ brass |
| 3 | disc | ductile iron sprayed plastic, stainless steel | 9 | bisect ring | SUS316/ brass |
| 4 | seat | EPDM，PTEE | 10 | collar | spring steel |
| 6 | bushing | Bronze, PTFE |
The main external and connection diemnsions
| DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
| H | 268 | 287 | 309 | 342 | 376 | 410 | 495 | 565 | 849 | 985 | 1109 |
| H1 | 70 | 76 | 86 | 104 | 118 | 132 | 167 | 198 | 239 | 267 | 309 |
| L1 | 43 | 46 | 46 | 52 | 56 | 56 | 60 | 68 | 68 | 78 | 102 |
| L1 | 32 | 47 | 65 | 91 | 112 | 146 | 194 | 242 | 292 | 325 | 380 |
| L3 | 245 | 245 | 245 | 245 | 245 | 245 | 400 | 400 | 400 | 400 | 431 |
| Ф1 | 152 | 152 | 152 | 152 | 152 | 152 | 300 | 300 | 305 | 305 | 290 |
