Double-diaphragm micro pressure regulator valve

Double-diaphragm micro pressure regulator valve

The Double-diaphragm micro pressure regulator valve ARL is a specialized control assembly composed of a control valve, actuator, pilot, and pressure spring. It is primarily designed to maintain constant pressure of protection gases, such as nitrogen, at the top of storage containers to prevent material contact with air. By reducing volatilization and oxidation, the Double-diaphragm micro pressure regulator valve ARL ensures the safety of the container and the integrity of the stored materials. It is an ideal solution for gas sealing protection systems in various large-sized storage tanks, supporting both nitrogen supply and discharge applications.

Key Features:

• Gas Sealing Protection: Specifically engineered to prevent oxidation and volatilization in large storage tanks using protection gas.
• Pilot-Operated Precision: Utilizes a pilot type structure and top-guided balanced trim for accurate pressure regulation.
• Dual Device Support: Features dedicated configurations for nitrogen supply (30W02-01) and nitrogen discharge (30W02-02) devices.
• High-Quality Materials: Construction includes Teflon-coated steel diaphragm covers and various rubber options like NBR, EPR, and fluorine rubber.
• Stability and Safety: Equipped with stainless steel bellows for pressure balancing and a detection mechanism for consistent performance.

Technical Specifications:

• Size Range: DN20-100 (3/4”-4”)
• Pressure Class: PN1.6, PN25, PN40, PN6.4MPa (ANSI 150-600LB)
• Pressure Setting Range: 0.4~0.5 to 56~66 Kpa (multiple incremental ranges)
• Applicable Temperature Range: -30°C ~ 150°C (Working temperature ≤ 80°C)
• Body Material: Cast iron (HT200), cast steel (ZG230-450), and cast stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti)
• Leakage Class: ASME B16.104 V (soft seal) and IV (hard seal); Class IV and VI (conforming to GB/T4312-92)
• Performance Accuracy: Set value error ±5% to ±8%
• Flow Characteristic: Quick open
• Pipe Connection: Flange type (Standard JB/T79.1-94, 79.2-94)

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