Welding diaphragm valve is a special form of block valve, with its opening and closing parts made of a soft material diaphragm, which separates the valve body cavity from the valve cover cavity. Due to the limitations of the valve body lining process and diaphragm manufacturing process, it is difficult to manufacture larger valve body lining and diaphragm. Therefore, diaphragm valves are not suitable for larger pipe diameters and are generally used in pipelines ≤ DN200.

Which occasions are welded diaphragm valves suitable for

Due to the limitations of the diaphragm material, welded diaphragm valves are suitable for low pressure and low temperature applications. Generally, it should not exceed 180 ℃. Due to its excellent anti-corrosion performance, diaphragm valves are generally used in devices and pipelines with corrosive media. Due to the limitations of the lining material and diaphragm material of the diaphragm valve body, the applicable temperature and medium of the diaphragm valve are limited.