U-shaped diaphragm valve - product description and principle of U-shaped diaphragm valve

U-shaped diaphragm valve - product description,Advantages of U-shaped diaphragm valve: The surface is polished without dead corners and can be installed in any position. The medium flow direction does not affect the opening and closing of the valve body. The structure can extend the service life of the diaphragm. Standard diaphragms comply with the safety standards stipulated by authoritative organizations such as FDA and UPS for the pharmaceutical and food industries. Principle of U-shaped diaphragm valve: 1. The diaphragm is made of soft seal such as rubber or plastic, which has better sealing performance. Since the diaphragm is a wearing part, it should be replaced regularly depending on the characteristics of the medium. 2. Due to the limitation of diaphragm material, diaphragm valve is suitable for occasions with low pressure and relatively low temperature. 3. Diaphragm valves can be divided into six types according to their structural forms: house-type diaphragm valves, direct-flow diaphragm valves, globe-type diaphragm valves, straight-through diaphragm valves, gate-type diaphragm valves and right-angle diaphragm valves; the connection form is usually flange connection. ; According to the driving mode, it can be divided into three types: manual, electric and pneumatic. Among them, pneumatic drive is divided into three types: normally open, normally closed and reciprocating. The diaphragm valve uses a valve stem to press an elastomer film tightly against the valve seat to isolate the air path. Turning the handwheel can drive the valve stem to move up and down, causing the diaphragm to leave the valve seat to open the valve or to press the diaphragm tightly on the valve seat to close the valve. If this kind of valve adopts nitrile rubber diaphragm, it is suitable for non-corrosive gases on the front stage and pre-extraction pipelines and the temperature is -25~80℃. If a fluororubber diaphragm is used, it can be used in high vacuum systems, and the operating temperature range is -30 to 150