Self-operated micro-pressure regulating valve

Product Overview

The Self-operated Micro-Pressure Regulating Valve is a precision-engineered solution designed for ultra-fine pressure control in low-pressure systems. Utilizing the energy of the process fluid, it automatically adjusts to maintain set pressure levels with exceptional accuracy, making it ideal for applications in laboratory equipment, gas analyzers, and precision instrumentation. Its compact design and self-operating mechanism ensure reliable performance without the need for external power sources.

Applications

Laboratory Equipment: Precise pressure control in gas chromatography and mass spectrometry.
Gas Distribution: Micro-pressure regulation in analytical gas lines and calibration systems.
Medical Devices: Pressure management in respiratory equipment and anesthesia machines.
Industrial Instrumentation: Control of low-pressure air and gas in precision manufacturing.

Key Features

Self-Operating Mechanism

• No External Power: Utilizes process fluid energy for operation.
• Direct-Acting Design: Simple and reliable, with minimal moving parts.
• Set Pressure Range: 0.5–50 kPa (0.07–7.25 psi), adjustable via fine-tuning spring.

Valve Design

• Compact Size: Miniature design for integration into tight spaces.
• High Sealing Performance: ANSI Class IV (standard) / Class VI (optional).
• Pressure Range: Suitable for inlet pressures up to 100 kPa (14.5 psi).

Flow Characteristics

• Trim Options: Linear or equal percentage flow characteristics.
• Flow Coefficient (Cv): 0.01–0.5 (DN3–DN10).
• Customizable Flow Curves: Tailored to specific process requirements.

Materials & Durability

• Body Materials: 316L Stainless Steel (CF8M), Brass, or PTFE-lined bodies.
• Trim Materials: Stellite 6, Tungsten carbide, or ceramic coating.
• Seals: PTFE, Viton, or EPDM (-20°C to 120°C).

Compatibility

• Process Fluids: Air, nitrogen, argon, and other non-corrosive gases.
• Accessories: Pressure gauges, fine-tuning knobs, and inline filters.

Operational Advantages

Ultra-Fine Control: Maintains set pressure within ±1% accuracy.

Energy Efficiency: No external power required, reducing operational costs.

Compact Design: Ideal for integration into small-scale systems.

Low Maintenance: Simple design with minimal moving parts.

Comparison with Pilot-Operated Valves

Selection Guidelines

High Precision: Opt for ceramic-coated trim for ultra-fine control.

Corrosive Media: Choose 316L body with PTFE seals.

High Cycling: Rotary seat design for 20,000+ cycles.

Cleanroom Use: Select electropolished surfaces (Ra <0.4μm).