AirTAC Solenoid Valve Construction – Aluminum Body, Solenoid Coil

The AirTAC solenoid valve is a widely used pneumatic valve in industrial automation systems. Understanding the construction of AirTAC solenoid valves helps engineers, operators, and maintenance personnel select, install, and service these devices efficiently, ensuring stable system performance and longer lifespan.

This article provides a detailed look at the structure of AirTAC 4SV and 7SV series valves, including the aluminum body, solenoid coil, internal components, port sizes, typical models, and recommended images for SEO.

1. Aluminum Body (Die-cast Aluminum Body)

Material

The valve body is made of die-cast aluminum, which provides lightweight, high strength, and excellent pressure resistance. The internal channel design is optimized for smooth airflow, minimizing pressure drop across the valve.

Design and Features

1. Multi-series and Threaded type: The valve body supports multiple series (4SV100 → 4SV400, 7SV050 → 7SV330) and threaded type mounting, suitable for manifold installation and space-saving setups.
2. Optimized airflow: The die-cast design ensures smooth airflow, reduces pressure loss, and improves system efficiency.

2. Solenoid Coil

Position and Mounting

The solenoid coil is mounted on the valve body and supports horizontal or vertical terminals, offering flexibility for wiring and installation.

Voltage and Protection

1. Standard voltages: AC220V, AC110V, DC24V, DC12V (model-dependent).
2. Protection: IP65 against dust and water, ensuring reliable operation in industrial environments.

Activation Time

The coil has a fast activation time of ≤0.05 seconds, allowing quick response in automated systems requiring precise timing.

3. Internal Structure

Components

AirTAC solenoid valves have a clearly defined internal structure, including:

1. Pilot valve
2. Manual override
3. Pilot kit
4. Big piston
5. Body
6. Spool
7. Little piston
8. Gasket
9. Bottom cover
10. Bolt
11. Steel ball
12. Spring
13. Return holder
14. Side cover

Benefits

1. Understand airflow: Sectional diagrams show how airflow moves and how pistons operate.
2. Easy maintenance: Components can be cleaned or replaced without disassembling the entire valve.

4. Port Size, Dimensions, and Installation

Port Sizes

1. Supported sizes: 1/8, 1/4, 3/8, 1/2 inch.
2. Choose based on airflow requirements and system pressure.

Installation Guidelines

1. Avoid excessive force when mounting; tighten screws to the recommended torque (0.1 N·m).
2. Supports push button or manual override for manual operation.
3. Correctly connect vertical plug wire or parallel plug wire to ensure proper valve function.

5. Models and Selection

4SV Series

1. Models: 4SV100, 4SV200, 4SV300, 4SV400
2. Selection based on airflow, pressure, port size, and number of positions.

7SV Series

1. Models: 7SV050, 7SV100, 7SV200, 7SV300
2. Suitable for high-flow and high-pressure systems.