The Ultimate Guide to Mini Motorized Valves: Compact Power for Flow Control
Modern piping is changing fast. Automation is now replacing manual valves i...
Pneumatic switch diaphragm valve is a type of valve that is operated by air pressure. It consists of a diaphragm that separates the valve body from the actuator chamber. When the air pressure is applied to the actuator chamber, it forces the diaphragm to move, which in turn opens or closes the valve.This type of valve is commonly used in industrial applications where precise control of fluid flow is required. It is often used in large-scale production plants where the flow of liquids and gases must be carefully monitored and controlled.Benefits of using a pneumatic switch diaphragm valve include its reliability, ease of use, and low maintenance requirements. Additionally, the air pressure used to operate the valve is typically lower than other types of valves, which can help to reduce energy costs.
| No. | Name | Material |
| 1 | Body | WCB/304 |
| 2 | Bonnet | WCB/304 |
| 3 | Diaphragm | EPDM |
| 4 | Disc | WCB |
| 5 | Cylinder | Aluminum Alloy |
| 6 | Piston | Aluminum Alloy |
| 7 | Stem | Stainless Steel 304/45# |
| 8 | Way of Connection | Flange |
| DN | Nominal Pressure MPa |
L | D | D1 | n-φd | f | H | Air Pressure MPa |
KG | φA | Drawing |
| 15 | 1.0 | 125 | 95 | 65 | 4-14 | 2 | 215 | 0.6 | 5 | 110 | ![]() |
| 20 | 1.0 | 139 | 105 | 75 | 4-14 | 2 | 220 | 0.6 | 5.2 | 110 | |
| 25 | 1.0 | 145 | 115 | 85 | 4-14 | 2 | 225 | 0.6 | 5.4 | 110 | |
| 32 | 1.0 | 160 | 140 | 100 | 4-18 | 2 | 240 | 0.6 | 6.9 | 140 | |
| 40 | 1.0 | 180 | 150 | 110 | 4-18 | 3 | 285 | 0.6 | 13.5 | 170 | |
| 50 | 1.0 | 210 | 165 | 125 | 4-18 | 3 | 307 | 0.6 | 16 | 170 | |
| 65 | 1.0 | 250 | 185 | 145 | 4-18 | 3 | 327 | 0.6 | 22 | 200 | |
| 80 | 1.0 | 300 | 200 | 160 | 8-18 | 3 | 390 | 0.6 | 31 | 230 | |
| 100 | 1.0 | 350 | 220 | 180 | 8-18 | 3 | 470 | 0.6 | 50 | 260 | |
| 125 | 1.0 | 400 | 250 | 210 | 8-18 | 3 | 637 | 0.6 | 65 | 310 |




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