Product introduction
Signal gate valve and signal butterfly valve are used in automatic spraying water pipeline in fire protection system to monitor the water supplying pipeline and can indicate the valve's opening in a long distance.Rising stem gate valve and opening indicator gate valve are often used in fire protection system,and if the installation position is high to the ground,rising stem gate valve is used and can show the valve's opening clearly and if the installation position is low,opening indicator gate valve is used.
Material
| No. | part | material |
| 1 | Transmission cap | ductile cast iron,cast steel |
| 2 | Handwheel | Ductile iron |
| 3 | Dust proof gasket | Plastic |
| 4 | Gasket | Buna-N rubber or EPDM |
| 5 | Thrust bearing | Gunmetals |
| 6 | Cover | Grey cast iron,ductile cast iron,cast steel |
| 7 | Bolt | Carbon steel or stainless steel |
| 8 | Body | Grey cast iron,ductile cast iron,cast steel |
| 9 | Copper nut | Gunmetals |
| 10 | Stem | Stainless steel |
| 11 | Disc | Ductile cast iron packed with rubber or EPDM outside |
Main technic-al parameters
Nominal pressure: 1.0-2.5MPaWorking temp.:0-120Flanged end:GB/T17241.6 GB9113,ASME 16.5 etc..
Nominal diameter: 50-400mmService:water,oils,gas etc..Inspection and test:GB 13927 API 598
Main dimensions
unit:mm
| DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
| L | 178 | 190 | 203 | 229 | 254 | 267 | 292 | 330 | 356 | 381 | 406 | 432 | 457 | 508 |
| H(full open) | 732 | 773 | 820 | 870 | 915 | 1003 | 1110 | 1263 | 1360 | 1550 | 1610 | 1900 | 1938 | 2120 |
Drawing
