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Self-Operated Valve
Self-Operated Pressure Regulating Valve
Self-powered pressure regulator uses the medium's own pressure as feedback to automatically maintain downstream pressure, requiring no external electricity or air supply.
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The Self-Operated Pressure Regulating Valve uses the process medium's own pressure as the sensing and driving source. A spring-loaded diaphragm senses downstream pressure changes and modulates the valve opening automatically — no electricity, compressed air, or auxiliary instrument required. This makes it the ideal choice for remote sites, hazardous areas, and energy-saving applications where external power is unavailable or undesirable.
Key Features
- Self-Powered: Operates entirely on medium pressure — no electricity or air supply needed
- Stable Control: Spring-loaded diaphragm provides accurate and reliable pressure regulation
- Simple Structure: Compact body with few moving parts, easy to install and maintain
- Safe & Reliable: Intrinsically safe for use in flammable and explosive environments
- Versatile Media: Suitable for steam, air, water, oil, and various non-corrosive fluids
Technical Specifications
Size RangeDN15 ~ DN300
Body MaterialWCB Cast Steel, SS304, SS316
Diaphragm MaterialNBR, EPDM, FKM
Setpoint Range0.02 ~ 1.6 MPa (adjustable)
Working Temp.-20°C ~ 200°C (higher on request)
ConnectionFlanged (GB / ANSI / JIS)
产品概述
自力式压力调节阀以工艺介质自身的压力作为感测和动力源，弹簧加载的膜片感应下游压力变化并自动调节阀门开度——无需电源、压缩空气或辅助仪表。是偏远现场、危险区域以及节能应用场合的理想选择，特别适用于不便提供外部能源的工况。
核心特点
- 自力驱动：完全依靠介质自身压力运行，无需电源或气源
- 调节稳定：弹簧加载膜片，压力调节精准可靠
- 结构简单：阀体紧凑，运动部件少，安装维护方便
- 安全可靠：本质安全型，可用于易燃易爆场合
- 介质广泛：适用于蒸汽、空气、水、油及多种非腐蚀性流体
技术规格
口径范围DN15 ~ DN300
阀体材质WCB 碳钢, SS304, SS316
膜片材质丁腈橡胶, EPDM, 氟橡胶
设定范围0.02 ~ 1.6 MPa（可调）
工作温度-20°C ~ 200°C（可定制更高）
连接方式法兰连接（GB / ANSI / JIS）