進口雙膜片微壓控制閥。由控制閥門、執行器、指揮器、壓力彈簧等部件組成。主要用于保持容器頂部保護氣體（一般為氮氣）的壓力恒定，以避免容器內物料與空氣直接接觸，防止物料揮發、被氧化，以及容器的安全。特別適用于各類大型儲罐的氣封保護系統?？刂崎y參數說明：
閥內件特點： 頂部導向 平衡內件
先導式結構
閥體類型： 直通式
閥蓋形式： 標準型
流量特性： 快開
口徑范圍： DN15-100(1/2"-4")
壓力等級： PN1.6、4.0Mpa（ANSI 150、300LB）
泄漏等級： ASME B16.104 Ⅴ（軟密封）
ASME B16.104 Ⅳ（硬密封）
管道連接方式： 法蘭式
設定值偏差： ±8%
適用溫度范圍： -30° ～ 150°
執行機構類型： 薄膜式執行機構（自力式）
30W02 double-diaphragm micro pressure regulator is composed of the control valve, actuator, pilot, pressure spring and other parts. It is mainly used to maintain constant pressure of the protection gas (generally nitrogen) at the top of the container, so as to prevent materials in the container from contacting the air, avoid volatilization and oxidation of materials and protect the safety of the container. It is especially suitable for gas sealing protection systems of various large-sized storage tanks.
Parameters of control valves：
Trim features： ttop guided, balanced trim
pilot type structure
Body type： straight-through type
Bonnet type： standard type
Flow characteristic： quick open
Size： DN15-100(1/2"-4")
Pressure class： PN1.6、4.0Mpa（ANSI 150、300LB）
Leakage class： ASME B16.104 Ⅴ（soft seal）
ASME B16.104 Ⅳ（hard seal）
Pipe connection type： flange type
Set value error： ±8%
Applicable temperature range： -30C° ～ 150C°
Actuator type： diaphragm actuator（self-operated）
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