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1.Product overview
Introducing the ZYC self-operated differential pressure control valve, also known as a pressure controller, this innovative solution requires no external power source. It ingeniously adjusts itself based on the pressure changes within the medium it regulates, seamlessly eliminating fluctuations caused by residual pressure and pressure waves in the pipeline. This ensures a constant pressure differential at both the inlet and outlet, thereby enhancing system stability.
The self-operated differential pressure control valve is the perfect choice for sub-metering or advanced automatic control systems.
2. Product characteristics
With a sophisticated double disc structure, this valve boasts minimal unbalance force on the valve stem. Its compact design makes it ideal for heating and air conditioning water systems, maintaining a consistent pressure difference within the controlled system. Highlighted features include:
1) Consistent pressure differential control within the system:
2) Robust internal self-regulation of the system: It effectively negates the impact of external network pressure fluctuations on the controlled environment;
3) Utilization of advanced diaphragm technology, ensuring a theoretical error of zero, and capable of withstanding pressure differences up to 0.8MPa;
4) Equipped with an advanced stepless pressure regulation structure, allowing for a control pressure difference adjustment ratio of up to 25:1;
5) In the absence of independent adjustments within the system, the valve functions as a self-operated flow control valve. Flow setting methods include:
a) Adjusting and controlling the pressure difference magnitude;
b) Modifying the resistance within the controlled system;
6) Features a blockage-eliminating function. When the control pressure difference reaches its maximum, the valve fully opens, allowing medium pressure to clear any blockages in the double valve disc. This is achieved by closing the ball valve at the end of the pressure guide pipe for 3-5 minutes;
7) Control pressure difference precision at an impressive ±5.
3. Working principle of the self-operated pressure differential control valve
Typically, the pressure difference control valve is installed on the user's inlet return water pipe, with the pressure guide pipe beneath the valve connected to the inlet water supply pipe. Here, P1 represents the water supply pressure; P2 is the return water pressure within the valve; and P3 is the return water pressure outside the valve.
When the pressure difference △Pi (APi-P1-P2) of the valve is pre-set, the pressure P1 within the valve's lower membrane chamber balances with the thrust generated by P2 and the spring's compression deformation. This balance determines the flow cross-sectional area A and the flow coefficient for fluid passage through the valve. As flow rate changes, the equilibrium of these forces adjusts A and the valve's flow coefficient, while ensuring △Pi remains constant.
With predetermined fluid properties, pipe diameter, and flow resistance coefficient, the formula for single pipe resistance can be approximately expressed as:
P=Kqm²
△P----Total pipeline resistance;
K-----Pipeline impedance;
qm ---- Flow rate
This formula illustrates that pipeline resistance is directly proportional to the square of the mass flow rate and pipeline impedance. As flow rate shifts, changes in pressure P2 in the upper membrane chamber cause the spool to move vertically, adjusting A and the corresponding flow coefficient to modify the system's total resistance within the valve, ensuring △Pi remains virtually unchanged.
4. Pressure Difference Control: Experience unparalleled precision with our state-of-the-art pressure difference control technology. This feature ensures optimal performance and reliability, setting new standards in the hydraulic control industry. Valve: Our expertly crafted valves stand as a testament to engineering excellence and innovation. Designed for durability and precision, they ensure seamless operation in all applications. Technical Parameter Table: Dive into the detailed specifications that highlight the exceptional capabilities and cutting-edge technology behind our Customized Hydraulic Control Valve Series DN15-DN350.
5. Material and Structure Drawing of Main Parts: Discover the robust construction and premium materials that form the backbone of our hydraulic valves. The schematics provide a clear view of the intricate design and meticulous craftsmanship.6. Main Outline and Connection Dimensions: Gain insights into the versatile design and compatibility of our valves, meticulously engineered to seamlessly integrate into diverse systems. The dimensions ensure an ideal fit and adaptability for your specific needs.
7. Installation and Debugging
1) Ensure the flow direction of the medium aligns perfectly with the arrow direction on the valve body.
2) The pressure difference control valve must be expertly installed on the return pipe. Valve connection involves a pressure guide pipe linked to the water supply pipe. It's advisable to install a 1/2" ball valve at the water supply end of the pressure guide pipe to activate the blockage elimination feature.
3) To prevent the valve from losing its automatic adjustment capabilities due to poor water quality, a filter should be installed on the water supply pipe, prior to the pressure guide pipe.
4) It's essential to equip both the supply and return water pipes before the valve with pressure gauges to facilitate effortless adjustment and precise control of pressure differences.
5) If the system flow is discovered to be excessively high or low, debris could be obstructing the valve plug during pipeline component installation. Closing the 1/2" ball valve for 3-5 minutes might automatically resolve a light blockage. For unresolved blockages, disassembly of the valve is required for thorough checking and removal of the obstruction.
6) Control Pressure Difference Adjustment: Adjust the pressure regulating valve stem counterclockwise, observing the pressure gauge as the pressure difference reduces by 0.01MPa. This incrementally raises the control pressure difference from 0.02MPa to 0.03MPa.
7) The valve operates optimally within a working pressure difference of 0.02-0.03MPa. If post-installation the pressure difference exceeds 0.3MPa, manually install a control valve on the water supply pipe. This reduces the supply and return pressure difference at the heat inlet device; otherwise, the valve may function at a minimal opening for extended periods, causing noise and significantly shortening its service life. valve.
8. Self-Operated Differential Pressure Regulating Valve Installation Adjustment
Huhang Technology Group Co., Ltd. is an industry leader and a distinguished multi-specialty supplier with an impressive legacy of over twenty years of professional expertise. Based in the vibrant region of Fujian, China, our company is strategically positioned with 5 state-of-the-art manufacturing facilities: strategically located in Shandong, the bustling metropolis of Shanghai, and 3 additional cutting-edge plants in Fujian. We excel in the international distribution of high-performance water and drainage valves, premium brass HVAC valves, robust fire hydrants, cutting-edge extinguishers, and sophisticated firefighting equipment. Our unwavering dedication to unparalleled quality and exceptional after-sales service truly sets us apart in the competitive landscape.
Supply Ability: An impressive 50,000 Meters per Day!
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