Cast Iron Dual Disc Check Valve  
 
Application
Valve is used for preventing the back-going of medium in pipelines and equipments, and the pressure of medium will bring the result of opening and closing automatically.When the medium is back-going, valve disc will automaticaly closed to avoid accidents.
 
Specification          
1 Face to face according to DIN3202-K3.
2 Flange drilling according to ANSI125/150;DIN2501PN10/PN16;AS2129 Table E;JIS10K ect.
3 Working Pressure: PN10;PN16
 
Main Parts and Materials
Number Part Name Material
1 Body GG25
2 Disc SS316
3 Stem SS410
4 Spring SS304
5 Washer PTFE
6 Washer PTFE
7 Gasket NBR
8 Hex nut      A193A
 
Main Dimensions
DN D D1 D2 L R t
50 107 65 40 43 27 18.4
65 127 80 60 46 35 19.8
80 142 94 70 64 42 27.7
100 162 117 88 64 50 27.7
150 218 171 134 76 77 31.6
200 273 224 182 89 102.5 32.9
300 378 310 260 114 146 43.3
350 446 360 298 127 170 45.3
400 488 410 350 140 195 52.3
450 546 450 385 152 215 58.2
500 594 505 438 152 238 58.3
600 700 624.5 538 178 292 74.6
700 820  720 662 229  345  96
800 930  825 762  241  394  99