303 Double Door Wafer Check Valve

303 Double Door Wafer Check Valve

  • UL Logo Mid Grey.jpg
  • gost logo 300.jpg
Size range 50mm - 400mm (2" - 16")
Body type Wafer
Maximum working pressure 20.7 bar (300 psi)
Working temperature 0°C to 80°C (32°F to 176°F )
Material Ductile Iron
Standards AWWA C550
Approvals UL Listed, Gost

Rapidrop 303 Check Valve is a wafer, double door swing type check valve that allows water flow in one direction only. A hinged clapper remains open with water flowing in one direction, and automatically closes when flow stops preventing backflow. These valves are suitable for vertical installation with the flow upwards.

 

 

Dimensions

 

Sizes Dimensions (mm)
In mm L D D1 D2
303 ANSI 303 PN16
2" DN 50 54 102 107 64 46
2.5" DN 65 54 121 127 78 60
3" DN 80 57 134 142 94 70
4" DN 100 64 162 162 117 84
5" DN 125 70 192 192 145 115
6" DN 150 76 218 218 170 134
8" DN 200 95 273 273 224 184
10" DN 250 106 328 328 265 220
12" DN 300 143 408 378 310 260
14" DN 350 184 449 438 360 302
16" DN 400 191 512 489 410 350


Material Specification

Component Material
Body Ductile Iron 65-45-12
Disk Ductile Iron 65-45-12
Stem Stainless Steel 420
Spring Stainless Steel 304
Rubber Seat EPDM