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Special fire signal res-ilient seated gate valves
 

Product introduction
 

Signal gate valves and signal butterfly valves are used in automatic spraying water pipeline in fire protection system to monitor the water supplying pipeline and can indicate the valves's opening in a long distance.Rising stem gate valves and opening indicator gate valves are often used in fire protection system,and if the installation position is high to the ground,rising stem gate valves is used and can show the valves's opening clearly and if the installation position is low,opening indicator gate valves 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

Typical installation diagram
 

Main technic-al parameters
 

Nominal pressure: 1.0-2.5MPaWorking temp.:0-120℃Flanged 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


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