Pneumatic diaphragm valve by valve core and valve body ( Including the seat) Two parts, according to the requirements of the use of different have different structure forms. Regulating valve pneumatic membrane mainly include direct single seat valve, two-seat regulator and pressure Angle of the regulator. Through small single-seat valve leakage, fluid of single seat valve core is formed by the thrust of unbalanced force is very big, so direct single seat valve is suitable for the requirements of small, small diameter and Industrial Valves leakage at a lower pressure difference before and after. Direct two-seater valve body with two valve core, because the fluid ACTS on the direction of thrust fluctuation valve core to roughly offset; So the two-seater valve unbalanced force is small, allows for a larger pressure difference before and after the Industrial Valves. Due to the complex body flow, bad to the body when applied to high erosion damage is serious, should not be used in high viscosity, medium containing suspended particles or fiber. In addition, due to the limitation of processing conditions, two-seat valves up and down two Industrial Valves core is not easy to locked, at the same time so close leakage, particularly in situations of high and low temperatures, due to the thermal expansion coefficient of material is different, are more likely to lead to serious leakage. Angle type high pressure relief valve is right Angle type, flow is simple, small resistance, erosion by high velocity is small, especially suitable for high pressure, high viscosity and poor quality fluid containing suspended particle synthesis, can also be used to deal with vapor liquid miscible, easy to flash steam corrosion occasion. The body can avoid coking, bonding and congestion, facilitate cleaning and self-purification.
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