Self-operated flow control valve introduction
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It is especially suitable for flow control of non-corrosive liquid medium such as heat supply and air conditioner. It is installed in the water system and can be adjusted automatically before the operation to make the system flow rate constant automatically. The setting value. Automatically eliminate the water system due to various factors caused by the imbalance of water to maintain the flow of users to overcome the "hot and cold uneven" to improve heating and air-conditioning room temperature and improve energy efficiency of the system to achieve energy-saving, heating, air-conditioning system to achieve "Metering charges" the ideal matching products. Role: Self-acting flow control valve is the role of the valve inlet and outlet differential pressure changes in the circumstances, to maintain a constant flow through the valve to maintain in-line with the controlled object (such as a loop, a user, a device Etc., the same below) the flow rate constant. Pipe network application of self-flow balancing valve can be directly set according to the design flow, the valve can be under pressure in the water, the pipeline automatically eliminate the remaining pressure head and pressure fluctuations caused by the flow deviation. Self-flow control valve name more, such as self-flow balance valve, constant flow valve, self-balancing valve, dynamic flow balance valve. Various types of self-flow control valves, different structures, but the working principle is similar. How it works: Self-balancing valve is a manual control valve and a self-balancing valve group. Regulating valve group is to set the role of flow, valve automatically balance the role of maintaining a constant flow. System fluid working pressure P1, manual control valve before and after the pressure was P2, P3. When the manual control valve transferred to a certain position, that is, to determine the "set flow" Kv manual valve flow coefficient, flow G = Kv (P2-P3) 1/2, Kv is, Kv set, As long as P2-P3 unchanged, the flow G unchanged. When the system flow rate increases, the actual value of (P2-P3) exceeds the allowable given value. At this moment, the automatic regulating valve group will be automatically closed by the action of the pressure sensitive membrane and the spring until the flow rate is maintained again to the set flow rate, vice versa. Self-balancing valve automatically adjusts the effective range of flow depends on the performance of the working spring. Generally self-balancing valve before and after the pressure difference in the range of 20-300kPa can set the value of effective control of flow. When the pressure is less than 20kPa, the control flow does not reach the set value; pressure exceeds 300kPa, it may produce noise. Application: Heating and air conditioning water system. The maximum temperature of 120 ℃, pressure 1.6Mda Use Installation: ①After the arrival of the goods should be properly stored, to avoid rain, stored in a dry place; ② should be installed according to the direction of the water flow arrow arrow body, The pipe can be installed vertically or horizontally; ④ flow setting method: with a special wrench, open the protective screw, rotate the stem, the gradual adjustment of the value of the flow to set the corresponding value; ⑤ self-balancing valve does not have off function , According to need, should set up another shut-off valve.