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The Core Functions of Three-Way Valves
In industrial systems and daily equipment, three-way valves are key compone...
Pneumatic regulating diaphragm valve is a type of control valve that uses compressed air to operate the valve positioner.
Pneumatic regulating diaphragm valve is a type of control valve that uses compressed air to operate the valve positioner. The valve has a diaphragm that separates the valve body from the control chamber, and the pressure differential between the two chambers controls the valve position. The valve can be used to regulate the flow of gases or liquids in various industrial applications, such as in the chemical, pharmaceutical, and food processing industries. The use of a pneumatic actuator allows for precise control and quick response times. The regulating function of the valve is achieved by monitoring and adjusting the pressure in the control chamber, which changes the position of the valve disk and, consequently, the flow rate.
| No. | Name | Material |
| 1 | Body | WCB/304 |
| 2 | Bonnet | WCB/304 |
| 3 | Diaphragm | EPDM/F46 |
| 4 | Disc | WCB/304 |
| 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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