AC Series Air Filter Combination (Triple Unit)

I. Product Introduction

The air filter pressure reducing valve is an integrated air source pressure regulation component, specially developed and produced based on domestic industrial site operating conditions. With optimized and upgraded valve body structure, it features large output flow, high pressure stabilization accuracy, and strong operational stability, delivering superior comprehensive performance. This valve is widely used with automated control systems, specifically providing air source filtration and pressure stabilization treatment for electro-pneumatic transducers, valve positioners, various pneumatic instruments, and pneumatic actuators. The complete product series is manufactured and factory-tested in compliance with national standards GB12244-GB12246-89, ensuring stronger product compliance and adaptability.

II. Pressure Stabilization Working Principle

The equipment achieves pressure stabilization through the force balance principle. Under normal conditions, the air source pressure acting on the diaphragm balances against the built-in spring pre-tension force, maintaining a constant output pressure. When external factors cause output pressure fluctuations, the valve body automatically adjusts in a closed loop to re-establish force balance:

1. Output pressure below set value: The diaphragm tension and spring force balance is broken, the diaphragm moves downward, opening the bottom ball valve to supplement intake air pressure, completing pressure compensation and returning to the standard set pressure.

2. Output pressure above set value: The diaphragm moves upward under air pressure thrust, the valve stem separates from the diaphragm core, and excess air in the chamber is discharged through the pressure relief port to the atmosphere, reducing pressure until the diaphragm and spring re-establish force balance.

Through closed-loop adaptive regulation, the equipment maintains constant air source output pressure at the specified working pressure value. The standard control air source pressure is 0.1MPa.

III. Integrated Structure Functions

1. Filtration Function: Built-in filter components purify compressed air source impurities and moisture, providing clean intake air for downstream pneumatic components.

2. Pressure Reduction and Stabilization: Adaptive balance pressure regulation offsets external operating condition interference, stabilizing pneumatic equipment working pressure.

3. Automatic Pressure Relief: Automatic pressure relief and compensation under overpressure conditions without manual intervention, achieving fully automatic closed-loop pressure stabilization.

4. Integrated Pressure Control: Filtration, pressure reduction, pressure regulation, and pressure relief integrated in a single valve body, simplifying air source pipeline component layout.

IV. Product Features

1. National standard production, manufactured and tested in compliance with national valve pressure standards, suitable for industrial automation acceptance standards.

2. Excellent pressure stabilization accuracy, strong resistance to external operating condition interference, small output air pressure fluctuations, suitable for precision pneumatic instruments.

3. Large air output flow, sufficient air supply capacity, adaptable for simultaneous air supply and pressure regulation of multiple pneumatic actuators.

4. Adaptive closed-loop pressure regulation, automatic high/low pressure compensation and pressure relief, no need for repeated manual pressure adjustment.

5. Integrated structure, compact design, convenient installation, combining dual functions of air source filtration and pressure reduction.

6. Low failure rate, sensitive diaphragm and spring linkage, fast pressure regulation response, suitable for long-term continuous workshop operation.

V. Application Fields

Suitable for factory automation control systems, pneumatic instrument measurement and control systems, pipeline pneumatic control circuits, and industrial valve control systems. Specifically provides clean, constant-pressure compressed air source for valve positioners, pneumatic transducers, pneumatic actuator cylinders, and precision pneumatic testing instruments. Can also be used with pneumatic energy storage and pneumatic-hydraulic linkage systems.

VI. Usage Precautions

1. The equipment control air source rated standard is 0.1MPa; the connected air source pressure must not exceed this standard for prolonged use to avoid diaphragm damage.

2. Set the output pressure as needed during initial use, and lock the pressure adjustment structure after setting to prevent accidental parameter changes from external forces.

3. Regularly disassemble and clean the built-in filter element to prevent impurities from blocking the air passage, which would affect pressure regulation accuracy and intake flow.

4. Protect the valve body in low-temperature, humid conditions to prevent moisture freezing and corrosion from affecting diaphragm flexibility.

5. Ensure the valve body pressure relief port remains unobstructed; do not block the pressure relief port to ensure normal exhaust and pressure stabilization under overpressure conditions.

6. Regularly inspect spring elasticity and diaphragm integrity; replace aging or damaged components promptly to ensure effective force balance pressure regulation.