Main parts of fire signal butterfly valve:
| serial number | Part Name | material | serial number | Part Name | material |
| 1 | valve body | Ductile iron, cast steel | 7 | sealing ring | NBR.EPDM |
| 2 | valve shaft | SUS410/SUS316 | 8 | round gasket | SUS316/brass |
| 3 | Butterfly | Ductile iron spray , stainless steel | 9 | open loop | SUS316/brass |
| 4 | valve seat | EPDM, PTFE | 10 | retaining ring | spring steel |
| 6 | bushing | Bronze, PTFE |
[Standard parameters]
| design standards | GB/T12238-2008 |
| Structure length | GB/T12221-2005 |
| connection standard | GB/T 79.1-1994 |
| pressure test | GB/T13927-2008 |
[Adapted to working conditions]
Now in petrochemical, gas equipment, nuclear industry, power equipment, environmental protection water treatment, HVAC, iron and steel metallurgy, industrial kilns, canning equipment, brewing equipment, drying equipment, vacuum equipment, surface treatment, biopharmaceuticals, food machinery , textile printing and dyeing, papermaking and other industries have been widely used.
Main dimensions and weight (PN1.0/1.6MPa)
| DN( mm) | A | B | C | D1 | L | n-Φ | K | E | 4-Φ1 | Φ2 | G | Weight WT (kg) |
| 50 | 140 | 80 | 43 | 125 | 32 | 4-19 | 77 | 57.15 | 4-6.7 | 12.6 | 100 | 3.34 |
| 65 | 152 | 89 | 46 | 145 | 32 | 4-19 | 77 | 57.15 | 4-.67 | 12.6 | 120 | 3.94 |
| 80 | 159 | 95 | 45.21 | 160 | 32 | 8-19 | 77 | 57.15 | 4-.67 | 12.6 | 127 | 4.05 |
| 100 | 178 | 114 | 52.07 | 180 | 32 | 8-19 | 92 | 69.85 | 4-10.3 | 15.77 | 156 | 5.48 |
| 125 | 190 | 127 | 55.5 | 210 | 32 | 8-19 | 92 | 69.85 | 4-10.3 | 18.92 | 190 | 7.66 |
| 150 | 203 | 139 | 55.75 | 240 | 32 | 8-23 | 92 | 69.85 | 4-10.3 | 18.92 | 212 | 8.5 |
| 200 | 238 | 175 | 60.58 | 295 | 45 | 8-23 | 115 | 88.9 | 4-14.3 | 22.1 | 268 | 25 |
| 250 | 268 | 203 | 68 | 350 | 45 | 12-23 | 115 | 88.9 | 4-14.3 | 28.45 | 325 | 31.4 |
| 300 | 306 | 242 | 76.9 | 400 | 45 | 12-23 | 140 | 107.95 | 4-14.3 | 31.6 | 403 | 45.9 |
| 350 | 368 | 267 | 76.17 | 460 | 45 | 16-23 | 140 | 107.95 | 4-14.3 | 31.6 | 436 | 54 |
