The pneumatic sanitary diaphragm valve has the advantages of simple structure, beautiful appearance, quick disassembly, flexible operation, small fluid resistance, safe and reliable use. It is suitable for the control of water, gas, oil and corrosive medium in chemical industry, petroleum industry, metallurgy industry, water heating industry, food industry and pharmaceutical industry. The reason of structure design of pneumatic sanitary diaphragm valve is especially suitable for ultra pure medium or heavily polluted, very viscous liquid, gas, corrosive or inert medium. When combined with control equipment, pneumatic sanitary diaphragm valve can replace other traditional control systems, especially for solid and easily polluted inert media.
1. The inner cavity of the lower valve body is separated from the inner cavity of the upper valve cover with a diaphragm, so that the valve stem, valve disc and other parts placed on the diaphragm will not be corroded by medium, and the medium leakage will not occur, so the packing box sealing structure is omitted.
2. The diaphragm is made of soft sealing materials such as rubber or plastic, which has good sealing performance. As the diaphragm is a vulnerable part, it should be replaced regularly according to the working condition and medium characteristics.
3. Limited by diaphragm material, diaphragm valve is suitable for low pressure and low temperature.
4. The variety of lining materials can be used in various media with good corrosion resistance.
5. The diaphragm can be replaced and the maintenance cost is low.
Connection size:BS4504、DIN2532、JIS B2212、ANSI B16.1、ISO2004
Main materials: gray iron, ductile iron, carbon steel
Nominal diameter: DN50~1200mm
Nominal pressure: PN1.0~ 2.5mpa
Applicable temperature: < 80℃
Applicable medium: water and medium with physical and chemical properties similar to water
DN |
Nominal pressure MPa |
working pressure MPa |
L mm |
D mm |
D1 mm |
n-Фd mm |
f mm |
H1 mm |
b mm |
D0 mm |
Weight Kg/kilos |
---|---|---|---|---|---|---|---|---|---|---|---|
15 | 1.6 | 1.6 | 108 | 95 | 65 | 4-14 | 2 | 84 | 92 | 66 | 2 |
20 | 117 | 105 | 75 | 4-14 | 2 | 93 | 105 | 66 | 3 | ||
25 | 127 | 115 | 85 | 4-14 | 2 | 100 | 112 | 66 | 4 | ||
32 | 146 | 140 | 100 | 4-18 | 2 | 127 | 144 | 96 | 6.5 | ||
40 | 159 | 150 | 110 | 4-18 | 2 | 136 | 156 | 96 | 7.5 | ||
50 | 190 | 165 | 125 | 4-18 | 2 | 151 | 177 | 96 | 10.5 | ||
65 | 1.0 | 1.0 | 216 | 185 | 145 | 4-18 | 2 | 183 | 213 | 165 | 17.5 |
80 | 254 | 200 | 160 | 8-18 | 2 | 190 | 230 | 230 | 25.5 | ||
100 | 305 | 220 | 180 | 8-18 | 2 | 242 | 285 | 280 | 36 | ||
125 | 356 | 250 | 210 | 8-18 | 3 | 285 | 348 | 280 | 47.5 | ||
150 | 406 | 285 | 240 | 8-22 | 3 | 353 | 431 | 368 | 74 | ||
200 | 0.6 | 521 | 340 | 295 | 8-22 | 3 | 445 | 537 | 483 | 143 |