Constant flow valve and cross flow control valve are variable resistance equipment, which is based on fluid differential pressure as a driving force, and according to system conditions (differential pressure) changes, automatically change the drag coefficient, to maintain the constant flow valve and cross flow through Constant flow of each branch to achieve balanced transmission and distribution of the entire system to eliminate the uneven phenomenon of hot and cold. Under the conditions of the total flow rate, the flow changes of each branch will not affect each other and the system is relatively stable. The constant flow valve and the constant flow control valve is different: constant flow valve is only a valve flap, the valve directly feel the valve before and after the differential pressure, the implementation of changes in the valve resistance action, can become a "direct acting variable resistance valve" It can not adjust the flow online, so the use of constant flow valve can not be implemented to change the total flow of energy-saving operation, and this constant flow valve is not domestic, import expensive, in the past rarely used domestic heating system, only in some central air conditioning system See. Constant flow control valve is to compensate for the way when the action of variable resistance, it has two valve, one is to adjust the valve flap for compensating the orifice before and after the differential pressure, it can become a "compensation variable resistance control valve" The principle is that the differential pressure before and after the orifice is used as the driving force for the compensation action to compensate and maintain the stability of the differential pressure before and after the orifice to keep the flow constant and to adjust the orifice size to obtain different flow rates . Therefore, it can regulate the flow. It can also keep the flow constant when the water conservancy condition changes. In the system, it can keep the flow of each branch constant and realize the balanced transmission and distribution of flow, and can also change and adjust the flow of each branch at any time to achieve the dynamic balance. If the annual cold to cold and cold to the end of the cold is carried out two flow regulation, you can achieve "phase change flow quality control" energy-saving mode of operation. Constant flow control valve adjustment is simple and convenient, but for larger systems, two times a year regulation is still a burden, but the constant flow control valve price is high, although the year can be recovered, but the user is still more psychology pressure. More Keyword Search: Flow Valve
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