After the work of the pressure reducing valve by valve to control the pressure. Increased when pressure sensor detected indicator for pressure of the valve, pressure reducing valve valve opening decreased; When the detected after the relief valve pressure decreases, and increase pressure reducing valve valve opening, in order to meet the control requirements. Instructions to the valve pressure rises, the pressure reducing valve valve opening decreased; When the detected after the relief valve pressure decreases, and increase pressure reducing valve valve opening, in order to meet the control requirements. Steam pressure reducing valve, the valve must be in a certain extent than value is higher than the system; Even in the maximum or minimum flow, it should also be able to respond to positive action and reaction control signal. These valves should be useful for control options, including maximum flow rate of 20% ~ 80%. Normal is geometric model or geometric characteristics. These types of a proportional control valve itself demands the best flow characteristics and flow range. Many different kinds of pressure reducing valve, common are: the guide piston type pressure reducing valve, diaphragm pressure reducing Industrial Valves, bellows type pressure reducing valve, proportional pressure reducing valve, self-reliance type pressure reducing valve, direct acting piston type pressure reducing valve, back pressure regulator, etc. They apply respectively to different working medium. Different forms have different specific works. But the general principle is: the pressure reducing Industrial Valves is through the opening and closing of throttling, reduced the inlet pressure to a needed discharge pressure, and make the outlet pressure remained stable. But general pressure-reducing valve must require import and export pressure difference & ge; 0. 2MPa。
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