Self-Actuated Pressure Regulating Valve

Category: Self-Operated Regulating Valve

Summary:The self-operated pressure regulating valve requires no external power source; instead, it uses the energy inherent in the controlled medium itself as its driving force. By introducing this internal energy into the actuator, the valve precisely controls the position of the valve core, thereby adjusting the pressure difference and flow rate across the valve and maintaining stable pressure either upstream (before the valve) or downstream (after the valve). This self-operated pressure regulating valve consists of key components such as the valve body, valve core, valve seat, valve stem, diaphragm cover, and sensing element. It features finely segmented pressure ranges that overlap seamlessly, delivering exceptional control accuracy. Primarily designed for applications involving gases, liquids, steam, and other media, these valves excel in functions like pressure reduction, pressure relief, and pressure stabilization. They are widely used across various industrial equipment, including those found in industries such as petroleum, chemical processing, power generation, metallurgy, food production, and light manufacturing.

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Product Details

Overview

　　The self-operated pressure regulating valve requires no external power source; instead, it uses the energy inherent in the controlled medium itself as its driving force. By introducing this internal energy into the actuator, the valve precisely controls the position of the valve core, thereby adjusting the pressure difference and flow rate across the valve and maintaining stable pressure either upstream (before the valve) or downstream (after the valve). This self-operated pressure regulating valve consists of key components such as the valve body, valve core, valve seat, valve stem, diaphragm cover, and sensing element. It features finely segmented pressure ranges that overlap seamlessly, delivering exceptional control accuracy. Primarily designed for applications involving gases, liquids, and steam, this valve effectively manages tasks like pressure reduction, pressure relief, and pressure stabilization. Its versatility makes it a popular choice for use in a wide range of industrial equipment, including those found in industries such as petroleum, chemical processing, power generation, metallurgy, food production, and light manufacturing.

Exterior Drawing

Principles of Stress Management

Self-Actuated Pressure Regulating Valve

　　Self-operated pressure regulating valves are classified into pressure-closing type and pressure-opening type.

Features of the Pressure Regulating Valve with Shut-Off Function

　　This valve takes pressure measurement downstream, with the valve core initially in the open position. As the downstream pressure rises, the valve core gradually reduces its opening, thereby regulating both the downstream pressure and flow rate to maintain the pressure at a stable, preset value—achieving the purpose of pressure reduction and stabilization. The valve is widely used for automatic control applications involving pressure reduction and stabilization in gaseous, liquid, and steam media.

Main Technical Parameters

　　Nominal diameter: DN15–DN300 mm

　　Nominal pressure: PN1.6–6.4 MPa, ANSI 125–400

　　Valve body material: Carbon steel, stainless steel Valve internal components material: Stainless steel

　　Flow characteristics: Quick-opening

　　Flow coefficient: Cv 8–1750

　　Leakage Level: (Hard) Class IV, (Soft) Class VI Pressure Regulation Range: 15–2500 (kPa):

　　Connection method: Flanged

　　Operating temperature: -29°C to +350°C

Features of the Compression-Type Pressure Regulating Valve

　　This valve takes pressure upstream of the valve itself. Initially, the valve core is in the closed position. As the upstream pressure rises, the valve core gradually opens wider, adjusting both the upstream pressure and flow rate to maintain the upstream pressure steadily at a predetermined value—thus achieving the purpose of pressure stabilization. It is widely used in automatic control systems for pressure reduction, pressure stabilization, or pressure relief in applications involving gases, liquids, and steam media.

Main Technical Parameters

　　Nominal diameter: DN15 to DN300 mm

　　Nominal pressure: PN1.6–6.4 MPa, ANSI 125–400

　　Valve internal component material: Stainless steel

　　Valve body materials: Carbon steel, stainless steel

　　Flow characteristics: Quick-opening

　　Flow coefficient: Cv 8–1750

　　Leakage Level: (Hard) Grade IV, (Soft) Grade VI

　　Pressure regulation range: 15–2500 (kPa)

　　Connection method: Flanged

　　Operating temperature: -29°C to +350°C

Keywords: Self-Actuated Pressure Regulating Valve