Automatic Control Valve
Automatic Control Valve is a valve that can automatically adjust fluid flow, pressure, temperature and other parameters according to set conditions without human intervention. It receives pressure, temperature, flow and other sensor signals and is driven by an electric, pneumatic or hydraulic actuator to change the valve opening. It consists of a valve body with a variety of materials and structures selected according to the fluid properties and environment, a valve seat and valve core that seal and control the fluid, and an actuator containing control elements such as a positioner. It has the advantages of precise control, safety, reliability, energy saving and high efficiency, and can improve production efficiency and product quality, ensure safety and reduce energy consumption.
Zhejiang Hengsen Industrial Group Co., Ltd. is a high-tech enterprise specializing in the production of HVAC controls products, pipe fittings and refrigeration fittings.Hengsen is located in Zhejiang Zhuji, that is closed to Xiaoshan and Pudong international airports with good geographical and economic advantages.
Why choose us
Professional Team
Hengsen has 5 subsidiaries, covering a total area of more than 80,000 square meters, with more than 500 employees and more than 100 professional technicians.
Sales Market
Hengsen has a number of offices in China, and its products have been supporting many fortune 500 enterprises for a long time, and exported to South America, Europe, the Middle East and other regions.
Safety
Every product of Hengsen, from raw material procurement, drawing design, production and production to product testing, goes through layers of checks to ensure high precision and high quality. In addition, Hengsen also has a national professional certification of the national laboratory, with the professional ability to test product quality. To ensure the absolute safety and long service life of the products in the process of use.
Conservation
Hengsen has been committed to the product research and development of the balance between quality and environmental protection, on the premise of not affecting the use and quality of products, to improve the structure. While saving the raw materials, we also constantly develop new functions, to achieve a product multi-purpose that greatly improve the cost performance of the product and reduce use energy.
An automatic control valve is a device that helps regulate the pressure or flow of fluid. Temperature gauges and flow meters have independent functioning and are used for generating signals. The valves are closed, open, or partially closed to regulate the flow through the pipelines.
The most prominent features of an automatic flow control valve are frictionless closing or opening, a single-seat design to prevent abnormal pressure rise, and a wedge seal structure to guarantee reliable sealing performance. It also has easy maintenance and cost-saving operation, low torque design, a self-cleaning feature, AWWA, and ANSI certification.
The auto flow control valve provides several benefits, including reliable flow control, improved water distribution efficiency, pressure optimization, and multiple valve actuator control options.
The different applications of an auto control valve are water treatment plants, water storage towers, multi-story buildings, and reclaimed water systems.
Pros of Using Automatic Control Valve
Precise Flow Control
Automatic flow control valves enable accurate and precise control over fluid flow rates. They allow for fine adjustments, ensuring consistent flow rates within desired ranges. This precision is crucial in applications that require tight control of flow parameters.
01
Improved Efficiency
By maintaining a steady flow rate, automatic flow control valves contribute to improved system efficiency. They help optimise energy usage, minimise waste, and enhance overall process performance.
02
Process Stability
Automatic flow control valves help in stabilising processes by ensuring reliable and consistent flow rates. This stability is vital in industries where variations in flow rates can impact product quality, system integrity, or operational safety.
03
Increased Productivity
With precise flow regulation, automatic flow control valves contribute to increased productivity in various industrial processes. By maintaining consistent flow rates, these valves facilitate reliable and uninterrupted operations, reducing downtime and maximising production output.
04
Types of Automatic Control Valve
Linear
Linear valves regulate flow through linear motion mechanisms. These valves utilise linear actuators, such as pneumatic or hydraulic cylinders, to control the valve opening. Due to their precision and responsiveness, linear valves are ideal for applications that demand accurate flow regulation. Industries such as oil and gas, chemical processing, and water treatment rely on linear valves to maintain optimal process conditions.
Rotary
Rotary valves govern flow rates through rotational motion. These valves feature closure elements, such as balls, butterfly disks, or plugs, that rotate to adjust the fluid flow. Rotary valves excel in providing fine flow control, making them suitable for applications requiring throttling capabilities. HVAC systems, food and beverage processing, and petroleum refining are some industries where rotary valves have widespread use.
Self-Actuated
Self-actuated valves can operate without any external power source or control signals. These valves use the process fluid’s energy, pressure, or temperature to automatically regulate the flow. They are often equipped with a self-contained actuator, such as a spring, diaphragm, or pilot valve, which responds to changes in the process conditions to control the valve opening. Self-actuated valves are particularly useful in applications where the power supply is limited or impractical, such as in remote locations or hazardous environments.
How Automatic Control Systems Work
Sensors
These devices measure specific variables (e.g., temperature, pressure, flow rate) in the system. For example, in a steam system, a temperature sensor might monitor the steam temperature.
Controller
This component processes the data from the sensors. It compares the measured values to a setpoint (the desired value) and determines the necessary adjustments. Common control strategies include PID (Proportional-Integral-Derivative) control.
Actuators
These are devices that carry out the adjustments directed by the controller. In steam systems, actuators might control valves or pumps to regulate flow or pressure.
Feedback Loop
The system continuously monitors the output and adjusts it to minimize the difference between the measured value and the setpoint. This creates a closed-loop system where the output affects the input through feedback.
Safety Factor
After determining the torque rating, it is necessary to apply a safety factor. Sometimes the torque rating from the valve supplier/manufacturer includes a safety factor but this should be clearly stated, not assumed. Selecting an appropriate safety factor depends on the flow media, frequency of operation, and type of operation.
|
Application |
Safety Factor (%) |
|
Type of Operation |
|
|
ON-OFF |
No additional factor |
|
Proportional |
20% |
|
Frequency of Operation |
|
|
Daily |
No additional factor |
|
Weekly |
30% |
|
Monthly |
50% |
|
Flow Media |
|
|
Wet or lubricating applications |
20% |
|
Dry gas or steam applications |
30% |
|
Viscous or abrasive applications |
50% |
Specifications
|
Product Range |
DN50 – DN1000 |
|
Pressure Rating |
PN10, PN16 and 25 |
|
Temperature Range |
-20°C TO +70°C |
|
Flange Dimensions |
EN1092-2 (DIN2501) |
|
Hydrostatic Testing |
EN12266, ISO5208 |
|
Type Testing |
EN1074-5 |
|
Actuation |
Hydraulically actuated |
|
Certificates |
Manufactured under a certified ISO 9001 quality system |
|
Applications |
• Water pipelines and distribution networks |
Our Certificate
FAQ
We're professional automatic control valve manufacturers and suppliers in China, specialized in providing high quality custom service. We warmly welcome you to wholesale high-grade automatic control valve from our factory.
24VAC Solenoid Valve, 12v Thermostat, 3 4 Inch Electric Ball Valve