Q: What is the quota for the self-operated flow control valve sleeve?

 

       A: There is no suitable quota found in the quota (I don't know which province you are). 03 Shandong Province installation project consumption quota fixed tenth volume automatic control instrument installation engineering Chapter III centralized detection device and instrument direct action regulating valve classification, the corresponding rating number is 10-290, the fixed name "self-power flow regulating valve", unit station. Attachment: Description of self-operated flow control valve. The self-operated flow control valve is a new type of regulating valve. Compared with the manual regulating valve, it has the advantage of being able to automatically adjust; compared to the electric regulating valve, it has the advantage that no external power is required. Mainly used in heating and air conditioning projects. Structurally, the self-operated flow control valve is a two-valve combination consisting of a manual regulator valve block and an automatic balancing valve block. The former's role is to set the flow, and the latter's role is to maintain a constant flow. Each opening of the manual adjustment valve group corresponds to a flow rate, and the relationship between the opening degree and the flow rate is calibrated by the test bench test, and is equipped with an opening display and a locking device.