Feature:
Diaphragm valve consists of two types: 400Sr.(Weir type),500Sr.(Straight way type)
1. Ease of maintenance and repair work.
2. Spindle of stainless steel.
3. Zero leak from valve seat.
4. No gland leakage.
5. No fluid contamination without a pocket.
6. Superb corrosion resistance.
✪ Normal Stroke and Coefficient of Volume Cv
Valve type | Type 400 with rated Cv | Type 500 with rated Cv |
Nominal diameter DN | Stroke (mm) | Main body | Without lining | Rubber lined | Glass lined | PFA lined | ETFE lined | Stroke (mm) | Main body | Without lined | Rubber lined |
Diaphragm | Rubber | PTFE | Rubber | PTFE | PTFE | PTFE | Diaphragm |
15 | 6 | 4 | 4.2 | 4.2 | 2.3 | 3 | 12 | 8.5 | - |
20 | 10 | 11 | 10.5 | 8.7 | 11 | 7.8 | 7 | 12 | 8.5 | - |
25 | 12 | 23.5 | 17 | 15 | 22 | 1030 | 28 | 37 | 30 |
40 | 20 | 55 | 49 | 33 | 58 | 27 | 57 | 28 | 74 | 66 |
50 | 28 | 83 | 76 | 61 | 99 | 40 | 71 | 40 | 124 | 104 |
65 | 34 | 115 | 95 | 97 | 123 | 64 | 111 | 52 | 232 | 190 |
80 | 40 | 172 | 176 | 196 | 229 | 112 | 161 | 62 | 330 | 264 |
100 | 52 | 303 | 306 | 194 | 291 | 210 |
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