Centrifugal pumps are widely used in various industrial processes, such as chemical, petrochemical, steel, power, paper, and environmental protection. However, centrifugal pumps are vulnerable to damage caused by low or no flow conditions, which can result in overheating, cavitation, noise, vibration, and erosion.
To prevent these problems and ensure stable pump operation, a special device called automatic recirculation valve (ARV) is needed. In this article, we will introduce the working principle, features, advantages, and applications of Datian Automatic Recirculation Valve, a high-tech product that provides reliable pump protection.
What is an Automatic Recirculation Control Valve (ARC)?
An Automatic Recirculation Control Valve (ARC) is a multifunctional valve that consists of three valves: a main valve, a bypass valve, and a check valve. The main valve is controlled by a flow-sensitive disk that opens and closes according to the flow rate of the fluid. The bypass valve is connected to the main valve disk by a linkage mechanism. The check valve is integrated into the main valve body and prevents reverse flow from the process to the pump when the pump is stopped.
Figure 2. Datian ZD Series Automatic Recirculation Control Valve
The ARC’s primary purpose is to ensure that a pre-determined minimum flow is assured through a centrifugal pump at all times. This is important as centrifugal pumps suffer from overheating and cavitation and can be permanently damaged if they run dry. The ARC automatically regulates the flow of fluid and ensures a minimum flow rate by opening or closing the bypass valve. When the flow rate is high, the main valve is open and the bypass valve is closed, allowing the fluid to pass through the main valve to the process. When the flow rate is low, the main valve is closed and the bypass valve is open, allowing a minimum flow of fluid to recirculate from the pump discharge to the pump suction or a low-pressure storage tank.
What are the Features of Datian Automatic Recirculation Control Valve?
Datian Automatic Recirculation Control Valve (ARC) is a high-tech product that has been developed through many years of research and innovation. It has the following features:
It has a simple structure and does not need power, control system, or wiring. It is easy to install and maintain.
It has a high accuracy and sensitivity in detecting and controlling the flow rate. It can ensure a minimum flow rate of 5% of the rated flow.
It has a multi-stage step-down function that can reduce the pressure and noise of the bypass flow. It can also prevent flashing and cavitation in the bypass line.
It has a wide range of applications and can handle various fluids, such as water, oil, gas, steam, etc. It can also withstand high temperature and pressure conditions.
It has a long service life and can resist corrosion and erosion. It can also cope with frequent changes in flow rate without affecting its performance.
What are the Advantages of Automatic Recirculation Control Valve?
Datian Automatic Recirculation Control Valve (ARC) has many advantages over other pump protection methods, such as continuous circulating system or control circulating system. Some of these advantages are:
It can save energy and reduce operating costs by avoiding unnecessary recirculation when the process flow is sufficient.
It can protect the pump from damage and extend its life by preventing overheating, cavitation, noise, vibration, and erosion.
It can improve the efficiency and reliability of the pump by ensuring stable operation under variable flow conditions.
It can simplify the system design and configuration by reducing the number of components and connections.
Through many years of research and development, continuous innovation and practice, Shanghai Dating Valve Co. research ZD Series Automatic Recirculation Control Valve, to prevent overheating, serious noise, unstable and erosion damage of centrifugal pump under low load operation.
What are the Applications of Automatic Recirculation Control Valve?
Datian Automatic Recirculation Control Valve (ARC) can be applied to various industrial processes that use centrifugal pumps, such as:
Chemical industry: for transporting corrosive or hazardous fluids
Petrochemical industry: for conveying oil or gas products
Steel industry: for cooling water circulation
Power industry: for boiler feed water or condensate return
Paper industry: for pulp or paper stock delivery
Environmental protection industry: for wastewater treatment or desalination
Conclusion
Datian Automatic Recirculation Control Valve (ARC) is a smart device that provides effective pump protection under low or no flow conditions. It consists of three valves that work together to regulate the flow of fluid and ensure a minimum flow rate. It has many features, advantages, and applications that make it suitable for various industrial processes. If you are looking for a reliable pump protection solution, you should consider Datian Automatic Recirculation Control Valve (ARC). ACD America Corporation is the exclusive representative for Datian Valve in America.
For more information, you can visit contact us at info@acdamerica.net
