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1. Structure and performance
The role of self-operated flow control valve is to maintain the constant flow through the valve in the case of changes in the pressure difference between the inlet and outlet of the valve, so as to maintain the constant flow of the controlled object (such as a loop, a user, a device, etc.) in series with it. Self-operated flow control valve has more names, such as self-operated flow balance valve, fixed flow valve, self-balancing valve, dynamic flow balance valve Various types of self-operated flow control valves have different structures, but their working principles are similar.
2. Structure and working principleStructurally
The self-operated flow control valve structure speaking, is a double valve combination, that is, it is composed of a manual regulating valve group and an automatic balancing valve group, as shown in Figure 1. The function of the manual regulating valve group is to set the flow rate, and the function of the automatic balancing valve group is to maintain the constant flow rate.
The self-operated flow control valve for the manual control valve group, the flow G=P2-P3 type, Kv is the flow coefficient of the manual control valve port, and P2-P3 is the pressure difference on both sides of the manual control valve port. The size of Kv depends on the opening, the opening is fixed, Kv is a constant, so as long as P2-P3 is unchanged, the flow G is unchanged. The constancy of P2-P3 is controlled by the automatic balancing valve group. For example, the inlet and outlet pressure difference P1-P3 increases, then the automatic balancing valve group is turned down through the action of pressure sensing film and spring, so that P1-P2 increases , so as to maintain the 1 constant of P2-P3; On the contrary, P1-P3 is reduced, and the automatic balancing valve group is expanded, so that P1-P2 is reduced and P2-P3 is maintained constant.
Each opening of the manual control valve group corresponds to a flow rate , and the relationship between the opening and flow rate is calibrated by the test bench test, and equipped with the opening display and locking device.
3. Performance and Features
1. Our innovative control valve allows you to precisely set the flow according to design specifications or real-time needs. It ingeniously adjusts to fluctuations in system pressure, ensuring a consistent flow at all times.
2. Overcome inconsistencies in thermal distribution within the system, elevating the overall quality of both heating and cooling applications.
3. Effectively resolve the challenge of varying pressure differences-high pressure near and low pressure far-ensuring balance across the system.
4. Optimize and reduce the water circulation in the system, significantly lowering resistance for enhanced efficiency.
5. Streamline your design process by eliminating the need for complex hydraulic balance calculations in the pipe network.
6. Simplify the intricate task of network adjustment by transforming it into a straightforward flow distribution solution.
7. Effortlessly eliminate the need for flow redistribution when switching heat sources in multi-source pipe networks.
8. Enjoy the convenience of random calibration of flow display values on the test bench, with flow measured in cubic meters per hour (m3/h).
4. Technical Parameters
1. This valve accommodates medium temperatures ranging from 0 to 150ºC and supports a working pressure differential of 20 to 600 Kpa. Selection can be made according to the pipeline's equal diameter.
2. Make selections based on the maximum flow rate and the specified flow range of the valve..
5. Installation and Commissioning
1. Ensure the flow direction of the medium perfectly aligns with the clearly indicated flow direction of the valve body arrow;
2. Post-installation, adjust the flow rate meticulously according to the specific demands of its designated series pipeline;
3. Thoroughly inspect to confirm whether the pressure difference at both ends of the valve remains within the optimal working pressure difference range;
4. Endeavor to prevent the valve from operating under a minimum flow state whenever feasible;
5. The absence of a blowdown screw on the spring cover necessitates regular manual blowdown.
6. Adhere to the established guidelines of standard
CJ 179-2003 "Self-operated Flow Control Valve"
Huhang Technology Group Co., Ltd. stands as an eminent beacon in the realm of multi-specialty suppliers, boasting over two decades of unparalleled expertise. Anchored in the bustling province of Fujian, China, our prestigious headquarters orchestrates operations from five state-of-the-art manufacturing facilities strategically stationed across the nation: one nestled in Shandong, another in the vibrant metropolis of Shanghai, and three more thriving in Fujian. Our core specialization lies in the exportation of premium water and drainage valves, high-quality brass HVAC valves, robust fire hydrants, top-tier extinguishers, and cutting-edge firefighting equipment. It is our unwavering dedication to excellence and our superior after-sales service that distinctly elevates us above the competition.
Supply Ability: Our state-of-the-art facilities enable us to produce an impressive 50,000 meters per day, ensuring we meet your demands promptly and efficiently.
At this moment, tailored shipping solutions for the selected quantity are not available. We are working diligently to resolve this and ensure seamless delivery.
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