Product Overview

The self-operated pressure regulating valve is an automatic control valve that does not require external driving energy such as power supply or compressed air, and completely relies on the pressure of the regulated medium itself as the power source. As a core pressure control equipment in industrial fluid pipeline systems, it needs no additional power devices or control systems, and realizes automatic pressure detection, regulation and stable control through the energy of the medium itself. It boasts core advantages including energy saving, environmental friendliness, convenient installation and stable operation, and is widely applicable to fluid pipeline pressure regulation scenarios in petroleum, chemical, metallurgical, electric power, water supply and drainage, HVAC, pharmaceutical, food and other industries.

This valve can accurately fulfill different regulation requirements such as upstream pressure stabilization, downstream pressure reduction and constant differential pressure, effectively ensuring stable operating pressure of the pipeline system, preventing damage to equipment and pipelines caused by abnormal working conditions such as overpressure and negative pressure, and improving the safety and stability of the entire fluid transmission system.

Working Principle

This self-operated pressure regulating valve operates through the linkage of the pressure sensing actuator and the valve body regulating mechanism, and its core is to automatically adjust the valve opening driven by the pressure change of the regulated medium. For the downstream pressure reduction type, the medium pressure acts on the diaphragm actuator: when the outlet pressure exceeds the set value, the diaphragm is stressed to push the valve stem upward, narrow the valve core opening, reduce the medium output flow, and thus drop the outlet pressure back to the set range; when the outlet pressure is lower than the set value, the stress on the diaphragm decreases, the valve stem drives the valve core downward, widen the valve opening, increase the medium output flow, and lift the outlet pressure back to the standard value.

For the upstream pressure stabilization type, it automatically adjusts the valve opening by sensing the medium pressure at the inlet end to keep the inlet pressure constant. The entire regulation process runs in a fully automatic closed loop without manual intervention, featuring high pressure regulation accuracy and fast response speed, and can continuously and stably maintain the pipeline pressure within the set parameter range.

Core Prod uct Features

No External Energy Required, Energy Saving and Consumption Reduction: Different from electric and pneumatic regulating valves, this product does not need external driving energy such as power supply or compressed air, and realizes automatic regulation entirely by the medium’s own energy, with no additional energy consumption cost. It is suitable for pipeline scenarios without power sources and remote working conditions, greatly reducing equipment operation and maintenance costs.

Compact Structure, Easy Installation and Maintenance: Adopting an integrated and streamlined structure design as a whole, it is small in size, light in weight and flexible in installation, which can be installed horizontally or vertically at any position of the pipeline. No additional brackets or supporting control systems are required, and later maintenance is simple without professional commissioning personnel, lowering the threshold for installation and operation.

High Regulation Accuracy, Stable and Reliable Operation: Equipped with a high-precision diaphragm actuator and high-quality valve core and seat sealing components, it has high pressure regulation sensitivity and small deviation, enabling precise pressure stabilization and reduction control; it operates without noise or vibration, features excellent sealing performance to eliminate medium leakage, and is suitable for long-term continuous operation in industrial working conditions.

Wide Applicable Medium Range, Strong Corrosion Resistance: The flow-through components such as the valve body and valve core can be made of various materials including cast steel, stainless steel and alloy steel according to medium characteristics. It is applicable to different fluids such as water, steam, air, oil products, various corrosive chemical media and inert gases, with outstanding temperature resistance, pressure resistance and corrosion resistance, adapting to complex working conditions such as high temperature, high pressure and corrosion.

Wide Application Scope, Strong Function Adaptability: Different functional models including downstream pressure reduction, upstream pressure stabilization and differential pressure control can be customized according to actual usage needs. It has a wide pressure setting range and flexible adjustable range, suitable for various normal pressure, medium pressure and high pressure pipeline systems, and meeting personalized pressure regulation demands of different industries.

Application Scenarios

Product Advantage Summary