Product characteristics
1. The length of double-lobed butterfly check valve is short, and its structure length is only 1/4~1/8 of that of traditional flange check valve.
2. Small size, light weight, its weight is only 1/4~1/20 of the traditional flange check valve;
3. The butterfly check valve with double valves closes quickly and has low water hammer pressure.
4. Horizontal and vertical pipes can be used and installed conveniently.
5. Double-lobed butterfly check valves flow smoothly with low fluid resistance.
6. Sensitive movement and good sealing performance.
7. Double-disc butterfly check valve has short disc travel and low impact force.
8. The whole structure is simple and compact, and the shape is beautiful.
Product parameters
Nominal pressure | PN1.0/1.6Mpa |
Applicable temperature | ≤150℃ |
Applicable medium | Water, steam, food, medicine, oil |
Main Parts and Components | Valve body, seat, disc, shaft, spring |
Main materials | Cast iron, ductile iron, carbon steel, stainless steel |
Major Dimensions and Weights
Specifications | size(mm) | weight |
mm | inch | D | D1 | D2 | L | R | t |
40 | 1.5 | 92 | 65 | 43.3 | 43 | 28.8 | 19 | 1.5 |
50 | 2″ | 107 | 65 | 43.3 | 43 | 28.8 | 19 | 1.5 |
65 | 2.5″ | 127 | 80 | 60.2 | 46 | 36.1 | 20 | 2.4 |
80 | 3″ | 142 | 94 | 66.4 | 64 | 43.4 | 28 | 3.6 |
100 | 4″ | 162 | 117 | 90.8 | 64 | 52.8 | 27 | 5.7 |
125 | 5″ | 192 | 145 | 116.9 | 70 | 65.7 | 30 | 7.3 |
150 | 6″ | 218 | 170 | 114.6 | 76 | 78.6 | 31 | 9 |
200 | 8″ | 273 | 224 | 198.2 | 89 | 104.4 | 33 | 17 |
250 | 10″ | 328 | 265 | 233.7 | 114 | 127 | 50 | 26 |
300 | 12″ | 378 | 310 | 283.9 | 114 | 148.3 | 43 | 42 |
350 | 14″ | 438 | 360 | 332.9 | 127 | 172.4 | 45 | 55 |
400 | 16″ | 489 | 410 | 381 | 140 | 197.4 | 52 | 75 |
450 | 18″ | 539 | 450 | 419.9 | 152 | 217.8 | 58 | 101 |
500 | 20″ | 594 | 505 | 467.8 | 152 | 241 | 58 | 111 |
600 | 24″ | 690 | 624 | 572.6 | 178 | 295.4 | 73 | 172 |
700 | 28″ | 800 | 720 | 680 | 229 | 354 | 98 | 219 |