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")
Connections PN16 / ANSI
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 Fig. 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 the flow stops preventing backflow. These valves are suitable for horizontal or vertical installation with the flow upwards.

 

 

Dimensions

Sizes Dimensions (mm)
In mm L D D1 D2
2" DN 50  54 106 68 46
2.5" DN 65 60 127 78  60
3" DN 80 57 134 102  70
4" DN 100 67 162 117  84
5" DN 125 83 193.5 145  115
6" DN 150 95 218 170.5  134
8" DN 200 127 276.8 224 184
10" DN 250 140 335.5 265 220
12" DN 300 181 405.5 310 260
14" DN 350 184 447.4 360 302
16" DN 400 191 505 410 350


Material Specification

Component Material
Valve Body Cast Iron - EN-JS1040
Disc Stainless Steel 316
Hinge Pin Stainless Steel 420
Spring Stainless Steel 304
Rubber Seat EPDM
Screw Carbon Steel
Shaft Seal EPDM
Rubber Seat EPDM
Washer PTFE