The diaphragm valve application
Diaphragm valve with corrosion resistant lining material of the valve body and corrosion resistant materials diaphragm valve to replace the valve core component, using the diaphragm of the upper and lower moving up the open and close for rubber or ptfe. The lining of the diaphragm valve corrosion resistance is strong, suitable for strong acid, strong alkali corrosive medium, such as opening and closing or adjustment. Its simple structure, small fluid resistance, under the same nominal dimension flow capacity than globe valves, plunger valves, plug valves and big, reliable sealing, no leakage, can be used for high viscosity and medium has suspended particles will not leak. But as a result of the limitation of the diaphragm and lining material, its pressure resistance, low temperature resistance, generally only applies to the nominal pressure & le; PN16, working temperature t≤ 150° The occasion. Its flow characteristic is close to quick opening feature, approximate to linear before 60% of stroke, 60% after the flow rate change is not big. Pneumatic diaphragm valve can be installed in the form of feedback signal, stop and locator device, a meet the needs of the automatic control, program-controlled or adjust the flow. Pneumatic diaphragm valve feedback signal using non-contact sensor technology. The product adopts the diaphragm alternative propulsion cylinder piston cylinder, ruled out the piston ring is easy to damage caused by leakage, leading to unable to push the valve, the disadvantages of closed door. When the gas source = fault occurs, can also be handwheel make the door opening and closing of the valve. As shown in figure 2 - weir diaphragm valve institutions Shown in 53, straight through the diaphragm valve institutions - as shown in figure 2 54, once-through diaphragm valve institutions - as shown in figure 2 Shown in 55, needle valve diaphragm institutions - as shown in figure 2 Pneumatic rubber diaphragm valve shown in 56, reciprocating institutions - as shown in figure 2 Shown in 57, no manual operation reciprocating pneumatic rubber diaphragm valve - as shown in figure 2 Shown in 58, as shown in figure 5 - sleeve diaphragm valve institutions 59, hydraulic clamp tube valve as shown in figure 5 - Shown in 60, electromagnetic driven clamp tube valve institutions - as shown in figure 2 Shown in 61, the dynamic pressure bar type tube clamp valve institutions - as shown in figure 2 Shown in 62, double dynamic pressure lever clamp valve institutions - as shown in figure 2 As shown in 63.