Self-operated after-valve pressure regulator valve arl

Self-operated after-valve pressure regulator valve arl

The Self-operated after-valve pressure regulator valve is an automated solution composed of a control valve, an actuator, and a spring used for precise pressure setting. It is engineered for controlling after-valve pressure within pipelines carrying non-corrosive liquids, gases, and vapors. This regulator functions by automatically closing the control valve whenever the after-valve pressure rises above the set point. With its cage-guided balanced trim and straight-through body, the Self-operated after-valve pressure regulator valve provides reliable energy-saving regulation without the need for external power.

Key Features:

• Cage Guided Balanced Trim: Features a balanced trim design for high stability and accurate pressure regulation.
• Self-Operated Energy Saving: Utilizes the medium’s own energy for control, eliminating the need for external power sources.
• Versatile Actuator Options: Compatible with both diaphragm and piston actuators to suit various pressure requirements.
• Quick Response: Designed with a “quick open” flow characteristic for efficient management of pressure fluctuations.
• Modular Construction: Employs a standard modular design for reliable performance and ease of maintenance.

Technical Specifications:

• Size: DN15–300 (1/2″–12″)
• Pressure Class: PN1.6, 4.0, 6.4MPa (ANSI 150, 300, 600LB)
• Body Materials: Cast iron (HT200), cast steel (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti)
• Plug Type: Single-seat (P), double-seat (N), sleeve (M)
• Pressure Balancing: Stainless steel bellows
• Applicable Temperature Range: -20°C ~ 350°C (depending on seal and material configuration)
• Pressure Setting Range: Wide range from 15 to 2500 Kpa (multiple overlapping segments)
• Leakage Class: ASME B16.104 V (soft seal) and ASME B16.104 IV (hard seal)
• Set Value Error: ±8% (General performance) / ±5% (Technical performance)
• Pipe Connection: Flange type

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