Dynamic equilibrium electric control valve DZLM is a dynamic equilibrium with the electric control integration products, mainly for the end of the air-conditioning equipment in the HVAC system (such as air conditioning box, new air handling units, air handlers), temperature control, the control device by configuring intelligent modules can be easily issued the traffic on the loop, the temperature of the automatic control, rational use of energy, energy saving, intelligent management. Application of this valve to the end of the device only by the standard control signal from the system pressure fluctuations, allowing the system to adjust the more stable, more energy efficient, especially suitable for the system load change in variable flow systems. 
 Dynamic equilibrium of the electric control valve DZLM works 
 As shown, the system load fluctuations in variable flow systems, when the system pressure changes: 
 (1), the rise of the valve inlet P1, P1-P3, increases by a sense of the lamination of the automatic balancing valve group off small, the P1-P2 increases, in order to maintain the constant of P2-P3; when the import of P1 decreases the P1-P3, is reduced by the action of the spring to open a large automatic balancing valve group, so that the P1-P2 decrease to maintain the constant of the P2-P3. 
 (2), when the electric actuator to accept the control signal so that the stem upward or downward movement of the valve plug to open or shut the opening between the small, P2, and P3 also changes. How to change regardless of system pressure, P2, P3, the pressure difference (P2-P3) remains unchanged, and therefore corresponds to any open position, the conveying of water flow is certain. Dynamic equilibrium electric control valve electrically adjustable features: 
 Dynamic equilibrium electric control valves, electric control function refers to the valve changes in the target zone temperature control signal to adjust the valve opening, thus changing the water flow, and finally to the actual temperature and set temperature of the target area. 
 Electrically adjustable, good or bad is the electric control valve flow characteristic curve. In the air conditioning system, the electric control valve ideal flow characteristics curve is linear or equal percentage. For the electric control valve in the process of the actual use of smaller valve authority, making the actual flow characteristic curve deviate from the ideal flow curve. Figure 4, the flow characteristics of an electric control valve ideal curve is linear (curve 1), but in the actual flow characteristic curve close to the quick opening type (curve 2) after installing the system pipeline regulation characteristics deteriorate. 
 Electric control valve DZLM dynamic equilibrium due to the unique body structure, in the actual use of the valve authority the basic one, so the actual flow curve and the ideal flow characteristics curve (Figure 5), did not deviate from, so has an excellent electric adjustment function. 
 Dynamic equilibrium electric control valve Features 
 ① drive straight trip, good interchangeability. 
 ② flow characteristic curve: a straight line / percentage 
 (3) flow error ≤ 5% 
 ④ Operating temperature :0-150 ° C 

 Dynamic equilibrium electric control valve Product Benefits 
 ① stable: traffic and changes in the terminal equipment from the system pressure fluctuations, flow changes do not interfere with each other. 
 ② Energy saving: the more traditional system energy saving 6-20%. 
 ③ efficient: to greatly shorten the debugging time, the system is running with high efficiency. 
 ④ Comfort: regulate the temperature more accurate, more comfortable than the traditional variable flow systems. 
 Dynamic equilibrium electric control valve materials and life 
 ① Body: high quality gray cast iron 
 ②: brass, stainless steel 
 ③ spring: stainless steel 
 The ④ Diaphragm: EPDM buried fiber 
 ⑤ life: more than a decade 
 Dynamic equilibrium electric control valve control mode 
 ① smart regulation type (most common) 
 ② proportional integral type