Sanitary Diaphragm Valve is a flexible diaphragm or a combined diaphragm installed in the valve body and the valve cover, and its closing part is a compression device connected to the diaphragm. The valve seat can be weir-shaped or the wall of the straight-through flow channel. The advantage of the sanitary diaphragm valve is that its operating mechanism is separated from the medium passage, which not only ensures the purity of the working medium, but also prevents the possibility of the medium in the pipeline impacting the working parts of the operating mechanism.
The main advantage of the sanitary diaphragm valve is that its operating mechanism is separated from the medium passage, which not only ensures the purity of the working medium, but also prevents the possibility of the medium in the pipeline impacting the working parts of the operating mechanism. In addition, no separate seal of any form is required at the valve stem unless it is used as a safety facility in controlling harmful media.
In the sanitary diaphragm valve, since the working medium contacts only the diaphragm and the valve body, both of which can be made of a variety of different materials, the valve can ideally control a variety of working media. The sanitary diaphragm valve is particularly suitable for media with chemical corrosiveness or suspended particles. The working temperature of the diaphragm valve is usually limited by the materials used for the diaphragm and the valve body lining, and its working temperature range is about -50 to 175℃.

The sanitary diaphragm valve is not only simple in structure, small in size, light in weight, low in material consumption, small in installation size, but also has a small driving torque, is easy and quick to operate, and can also have good flow regulation function and closing sealing characteristics. The sanitary diaphragm valve has a small flow resistance when it is fully opened. When it is opened between about 15° and 70°, it can also perform sensitive flow control. Therefore, butterfly valves are widely used in the field of large-caliber regulation; the movement of the stainless steel sanitary diaphragm valve plate is wiping, so the welded butterfly valve can be used for media with suspended fixed particles, and can also be used for powdered and granular media according to the strength of the seal.

The sanitary diaphragm valve is one of the cleaning components of the pulse bag dust collector. It is the compressed air "switch" of the pulse bag dust collector cleaning spray system and is directly related to the dust removal effect of the dust removal equipment.
Leakage is one of the common faults of sanitary diaphragm valves. What is the cause of leakage in sanitary diaphragm valves?

1. Damage to the diaphragm of the diaphragm valve.

2. The gasket of the diaphragm valve diaphragm cannot fit tightly with the end face of the air outlet, resulting in leakage of the solenoid valve.

3. For submerged diaphragm valves, if there is a hole in the nozzle in the air bag, the compressed air will leak directly into the blowing pipe without passing through the diaphragm valve.

4. The quality of the diaphragm valve diaphragm itself is poor.

5. Fatigue damage caused by the long working cycle of the diaphragm valve.