The valve body with corrosion-resistant lining and corrosion-resistant diaphragm are adopted, there is no stuffing box structure, the throttling element is an elastic diaphragm, and the flow passage of the valve body is smooth. Therefore, the pneumatic diaphragm diaphragm valve has small female force, large flow, no leakage and Convenient, reliable, fire-proof and explosion-proof, it is widely used in the flow adjustment of strong acid, strong alkali, strong corrosion, high viscosity, glume-containing, fiber-containing, and toxic and non-contaminated media in industrial automation systems.
Main material
| NO. | Name | Material |
| 1 | Body | PVDF |
| 2 | Diaphragm | F46 |
| 2a | Copy | EPDM |
| 3 | Disc | PVDF |
| 4 | Cover | PVDF |
| 5 | Stem | 2Cr13 |
| 6 | Stem nut | HPb9-1 |
| 7 | Cylinder | Aluminum alloy |
| 8 | Cap | 304 |
| NPS(in) | DN(mm) | PN(Mpa) | size(mm)standard | reference | |||
| L | D1 | A | H1 | W(kg) | |||
| ½ | 15 | 0.6 | 196 | 20 | 110 | 195 | 2 |
| ¾ | 20 | 0.6 | 221 | 25 | 110 | 200 | 2.3 |
| 1 | 25 | 0.6 | 234 | 32 | 110 | 210 | 2.5 |
| 1 ¼ | 32 | 0.6 | 255 | 40 | 140 | 228 | 3 |
| 1 ½ | 40 | 0.6 | 284 | 50 | 140 | 240 | 5 |
| 2 | 50 | 0.6 | 321 | 63 | 170 | 290 | 8 |
