ProductPRODUCTS 
Double Flange Swing Check Valve KF-5900
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Product Feature
Open or closed by itself with medium flow
Easy installation, can be used in both horizontal and vertical pipes.
Without leakage points, eliminate the possibility of valve leakaging
Technical Parameters
Nominal diameter(mm) | 40～500 | 40～500 | |
Nominal pressure(Mpa) | 1.0 | 1.6 | |
Testing pressure | Shell(Mpa) | 1.5 | 2.4 |
Seal(Mpa) | 1.1 | 1.76 | |
Suitable temperature | -40°C～200°C | ||
Suitable medium | Drinking water、sewage、seawater、food、medicines、gas、oil and acid | ||
Main Raw Material
Body | Disc | Stem | Seat |
Cast iron | ductile iron | Brass | NBR |
Bronze | EPDM | ||
Ductile iron | SS420/SS431/SS304 | Brass | |
Bronze |
Reference Standard
Design standard | DIN 3356 | ||
Testing standard | API 598 | ||
End flange standard | DIN 2501 PN10 PN16 | ||
Face to face standard | DIN 3202 F6 |
Overall Dimension and Weight
Size | D | D2 | L | b | f | H | D1 | Z-d | ||
PN10 | PN16 | PN10 | PN16 | |||||||
DN40 | 150 | 84 | 180 | 18 | 3 | 120 | 110 | 4-19 | 4-19 | |
DN50 | 165 | 99 | 200 | 20 | 3 | 137 | 125 | 125 | 4-19 | 4-19 |
DN65 | 185 | 118 | 240 | 20 | 3 | 147 | 145 | 145 | 4-19 | 4-19 |
DN80 | 200 | 132 | 260 | 22 | 3 | 159 | 160 | 160 | 4-19 | 4-19 |
DN100 | 220 | 156 | 300 | 24 | 3 | 180 | 180 | 180 | 4-19 | 4-19 |
DN125 | 250 | 184 | 350 | 26 | 3 | 203 | 210 | 210 | 4-19 | 4-19 |
DN150 | 285 | 211 | 400 | 26 | 3 | 223 | 240 | 240 | 8-23 | 8-23 |
DN200 | 340 | 266 | 500 | 30 | 3 | 258 | 295 | 295 | 8-23 | 8-23 |
DN250 | 395 | 319 | 600 | 32 | 3 | 290 | 350 | 355 | 12-23 | 12-24 |
DN300 | 445 | 370 | 700 | 32 | 4 | 325 | 400 | 410 | 12-23 | 12-24 |
DN350 | 505 | 429 | 800 | 36 | 4 | 361 | 460 | 470 | 16-23 | 16-24 |
DN400 | 565 | 480 | 900 | 38 | 4 | 388 | 515 | 525 | 16-28 | 16-30 |
DN500 | 715 | 582 | 1100 | 42 | 4 | 518 | 620 | 650 | 20-28 | 20-30 |
