ProductPRODUCTS 
Wafer Type Dual Disc Check Valve KF-8400
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Product Feature
Centerline structure, short face to face length, small volume and light weight.
Unobstructed flow passage, small fluid resistance.
Disc uses the spring to load, its quick closedown can effective reduce the hammer pressure.
The sealing property is good, the closure does not have noise and can meet the requirement of zero leakage.
Easy installation, can be used in both horizontal and vertical pipes.
| Technical Parameters |
Nominal diameter(mm) | 50～300 | 50～300 | ||
Nominal pressure(Mpa) | 1.0 | 1.6 | ||
Testing pressure | Shell(Mpa) | 1.5 | 2.4 | |
Seal(Mpa) | 1.1 | 1.76 | ||
Suitable temperature（°C） | -40°C～200°C | |||
Suitable medium | Drinking water、sewage、seawater、food、medicines、gas、oil and acid | |||
| Main Raw Material |
Body | Disc | Stem | Seat | Spring |
Cast iron | Plated ductile iron | Stainless steel | EPDM/NBR | SS304 |
Ductile iron | CF8 | WRAS-EPDM | SS316 | |
Carbon steel | CF8M | Viton | ||
Stainless steel | Aluminum bronze | customised | Silicon | |
PS：Vulcanized seat | ||||
| Reference Standard |
Design standard | BS5153 | |||
Testing standard | API 598 | |||
End flange standard | DIN PN10 / PN16、ANSI 125# / 150#、BS4504 PN10 / PN16 | |||
Face to face standard | EN558-1 16 Series | |||
| Overall Dimension and Weight |
Size | ΦD | ΦD1 | ΦD2 | ΦD3 | T | L | Weight （kg） | ||
DIN PN10 | DIN PN16 | ANSI 150# | |||||||
DN50 | 107 | 107 | 102 | 65 | 92 | 69 | 3 | 43 | 1.5 |
DN65 | 127 | 127 | 121 | 78 | 105 | 82 | 3.5 | 46 | 2.4 |
DN80 | 142 | 142 | 134 | 94 | 124 | 99 | 3.5 | 64 | 3.6 |
DN100 | 162 | 162 | 172 | 117 | 153 | 123 | 4 | 64 | 5.7 |
DN125 | 192 | 192 | 194 | 145 | 182 | 152 | 4 | 70 | 7.3 |
DN150 | 218 | 218 | 219 | 170 | 208 | 178 | 4 | 76 | 9 |
DN200 | 273 | 273 | 276 | 224 | 266 | 231 | 4.5 | 89 | 17 |
DN250 | 328 | 329 | 337 | 265 | 328 | 271 | 4.5 | 114 | 26 |
DN300 | 378 | 384 | 384 | 310 | 374 | 318 | 4.5 | 114 | 37 |
