Q47F forged steel fixed term function and characteristics of stainless steel ball valve spring set range: Q47F forged steel fixed stainless steel ball Industrial Valves ( Control valve) Implementing agencies spring adjusting range, to balance the real process. Flow capacity, rated flow across the valve under prescribed conditions. Clearance flow: when intercepting elements not timely is lower than the minimum flow of the control flow. Diaphragm pressure range: the difference between the diaphragm pressure range high low. This can be thought of as a kind of inherent or installation features. Double role implementing agencies: in any one direction can be powered on institutions. Dynamic imbalance force: since the role of the process fluid pressure, opening, in any of the provisions of the net force on the valve core. Useful area: the film personnel test network, implementing agencies in chengdu in sichuan province area is a useful land portion of the diaphragm area produces output force. Useful area of the diaphragm may be changed by its activity, usually at the beginning of the journey to the maximum, and at the end of the trip to a minimum. Molded diaphragm are less useful than flat diaphragm area change, so the Lord use molded diaphragm. Equal percentage flow characteristics: ( See & quot; Process control terms & quot; :“; Equal percentage flow characteristics & quot; 。 ) Loss of air pressure - Close: such a situation: when driving energy loss, the valve closure components to the closed position. Loss of air pressure - Open: such a situation: when driving energy loss, intercepting element moves to open the valve position. Loss of air pressure - Security: a characteristics of valve and its implementing agencies: the drive energy supply stops keyword optimization, makes the valve closure components to the full closed, open, or remain in the position of the last time, any kind of position is considered a precious process required. Failure - security role style may be necessary to control by the aid of connected to implementing agencies. Flow characteristics: when the percentage of rated trip from 0 to 100%, through the relationship between flow rate and the percentage of rated valve stroke. The term should be always presented as inherent flow characteristics or install flow characteristics. The flow coefficient ( CV value) : one is associated with the geometrical structure of the valve, the constant for a given stroke ( C V value) Sichuan personnel examination, can be used to measure flow capacity. It is lowered, the pressure of 1 pound per square inch per minute 60 ° F American gallons of water flow through the valve number.
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