Decode the Airtac Solenoid Valve Model Code: Say Goodbye to Selection Confusion

Introduction

Facing the densely packed model codes of Airtac solenoid valves (such as 4V210-08-NC-B-DC24V), many users are often confused—what exactly does each letter and number represent? Choosing the wrong character can lead to model mismatch, affecting equipment operation. In fact, Airtac solenoid valve model codes follow strict rules, acting as the product's "ID card," containing core information such as series, structure, specification, and voltage. This article will use plain language to break down the logic of Airtac solenoid valve model codes, helping you easily understand the meaning of every character so that selection is no longer a "blind guess."

I. General Structure of Airtac Solenoid Valve Model Codes (Using Mainstream Models as Examples)

The Airtac solenoid valve model code mainly consists of four parts: "Series Code + Structure/Specification Code + Function Code + Voltage Code." Some special models will include an Additional Code (such as explosion-proof or mounting method). The general structure is as follows:

$$\text{Series Code} + \text{Structure/Specification Code} + \text{Function Code} + \text{Voltage Code} + \text{Additional Code}$$

Example: 4V210-08-NC-B-DC24V

  • Series Code: 4V

  • Structure/Specification Code: 210-08

  • Function Code: NC-B

  • Voltage Code: DC24V

  • Additional Code: None (An explosion-proof model would include "Ex")

II. Part-by-Part Breakdown: Understanding the Meaning of Each Position

Part 1: Series Code — Defining the Core Product Type

The Series Code is the "basic identifier" of the model, directly determining the solenoid valve's structure type and application scenario. Common Series Codes and their meanings are as follows:

Series Code Core Meaning Structure Type Applicable Scenario
3V Direct Acting Solenoid Valve 2-port / 3-port 2-position Vacuum, Low Pressure, Small Equipment
4V Internal Pilot Solenoid Valve 5-port 2-position General Industry, High Flow, Automated Production Lines
6V Manifold Type Solenoid Valve 5-port 2-position (Manifold) Large Systems, Multi-Valve Integration
HV High-Pressure/High-Flow Manifold Valve 5-port 2-position (High Pressure) High Pressure ($\le 1.0\text{MPa}$), Heavy Loads
4M NAMUR Interface Solenoid Valve 5-port 2-position (NAMUR) Process Industry, Actuator Control
2V Two-Position Two-Way Solenoid Valve 2-port 2-position Simple On/Off Control (e.g., draining water/gas)

Part 2: Structure/Specification Code — Defining Size and Flow Rate

The Structure/Specification Code consists of a "Number Combination + Port Size," primarily containing two key pieces of information: "Effective Area" and "Port Specification." Taking the 4V series as an example:

Example: 4V210-08

  • First Digit (2): Effective Area Level (In the 4V series, "1"=Small Flow, "2"=Medium Flow, "3"=Large Flow, "4"=Extra-Large Flow).

  • Last Two Digits (10): Detailed Structure Code (10=Single Solenoid, 20=Double Solenoid; meanings vary slightly between series. In the 4V series, "10" represents Single Solenoid, 5-port 2-position).

  • Digits after the Hyphen (08): Port Size Code, corresponding to British standard pipe thread. Common Port Size Codes and their specifications are as follows:

Port Size Code Corresponding Pipe Thread Spec Applicable Tube Diameter
06 G1/8" $\text{Ø}4/\text{Ø}6$
08 G1/4" $\text{Ø}6/\text{Ø}8$
10 G3/8" $\text{Ø}8/\text{Ø}10$
15 G1/2" $\text{Ø}12/\text{Ø}16$
20 G3/4" $\text{Ø}16/\text{Ø}20$
25 G1" $\text{Ø}20/\text{Ø}25$

Supplement: Reference for Effective Area corresponding to 4V series Structure/Specification Codes (e.g., 4V110-06 $= 8\text{mm}^2$, 4V210-08 $= 17\text{mm}^2$, 4V310-10 $= 35\text{mm}^2$, 4V410-15 $= 50\text{mm}^2$).

Part 3: Function Code — Defining Special Functions and States

The Function Code is used to mark the valve's "Normal State," "Mounting Method," and "Additional Functions." Common Function Codes and their meanings are as follows:

Function Code Core Meaning Applicable Scenario
NC Normally Closed (A/B ports closed when power is off) Most conventional control scenarios (e.g., cylinder extension)
NO Normally Open (A/B ports open when power is off) Safety pressure relief, emergency exhaust scenarios
B Sub-base/Plate Mounting (Default is body porting/pipe mounting) Valve assembly integration, space-saving
F With Flange Mounting Heavy-duty equipment, vibration scenarios
M With Magnetic Switch Interface Scenarios requiring spool position monitoring
R With Quick Exhaust Function Actuators requiring rapid pressure release (e.g., cylinders)

Part 4: Voltage Code — Defining Power Supply Specification

The Voltage Code directly indicates the coil's rated voltage and is a critical parameter for selection, which must strictly match the power supply. Common Voltage Codes and their meanings are as follows:

Voltage Code Rated Voltage Wiring Characteristic Applicable Scenario
AC220V AC 220V Non-polar Industrial mains power, centralized power supply
AC110V AC 110V Non-polar Imported equipment, specific regional power grids
AC24V AC 24V Non-polar PLC centralized control, industrial safety low voltage
DC24V DC 24V Polar (Positive/Negative) Small PLCs, sensors, battery-powered systems
DC12V DC 12V Polar (Positive/Negative) Mobile equipment, vehicle systems, miniature devices

Part 5: Additional Code — Defining Special Custom Requirements

The Additional Code is used to denote special environments or customized functions. Common Additional Codes and their meanings are as follows:

Additional Code Core Meaning Applicable Scenario
Ex Explosion-Proof Certification ($\text{Ex d IIB T4}$) Explosive hazard environments (e.g., chemical, oil fields)
L Low-Temperature Type (Resistant to $-40^\circ\text{C}$) Outdoor northern regions, cold chain equipment
H High-Temperature Type (Resistant to $120^\circ\text{C}$) Near high-temperature equipment (e.g., boilers)
S Stainless Steel Body ($\text{304}/\text{316L}$) Corrosive environments (e.g., chemical industry, seaside)
Q Food-Grade Material (FDA compliant) Food and beverage, medical equipment

III. Practical Examples: Step-by-Step Model Decoding

Case 1: 4V410-15-NC-DC24V

  • Series Code: 4V → Internal Pilot 5-port 2-position solenoid valve.

  • Structure/Specification Code: 410-15 → 4=Extra-Large Flow Level, 10=Single Solenoid, 15=Port Size G1/2" (Effective Area $50\text{mm}^2$).

  • Function Code: NC → Normally Closed state (A/B ports closed when power is off).

  • Voltage Code: DC24V → DC 24V power supply (Polar).

  • Conclusion: Suitable for high-flow applications (driving cylinder bore $\ge 63\text{mm}$), DC24V control in general industrial scenarios, Normally Closed state, body porting.

Case 2: 3V110-06-NO-AC220V

  • Series Code: 3V → Direct Acting Solenoid Valve.

  • Structure/Specification Code: 110-06 → 1=Small Flow Level, 10=Single Solenoid, 06=Port Size G1/8" (Effective Area $4\text{mm}^2$).

  • Function Code: NO → Normally Open state (A/B ports open when power is off).

  • Voltage Code: AC220V → AC 220V mains power supply (Non-polar).

  • Conclusion: Suitable for vacuum and low-pressure scenarios (zero-pressure start), small flow control, AC220V power supply, Normally Open state.

Case 3: 4M210-08-Ex-B-AC110V

  • Series Code: 4M → NAMUR Interface Solenoid Valve.

  • Structure/Specification Code: 210-08 → 2=Medium Flow Level, 10=Single Solenoid, 08=Port Size G1/4".

  • Function Code: Ex=Explosion-Proof certification, B=Sub-base/Plate Mounting.

  • Voltage Code: AC110V → AC 110V power supply.

  • Conclusion: Suitable for process industry (valve actuator control), hazardous (explosive) environments, AC110V power supply, sub-base mounting.

IV. Essential for Selection: Quick Lookup and Verification Tips

  1. Check the Series Code first: Determine the series based on the application scenario (e.g., 3V for vacuum, 4V for general industry, 6V for large systems).

  2. Then check the Structure/Specification Code: Determine the effective area level based on flow requirements, and determine the port code based on tube size.

  3. Verify the Function Code: Confirm if the normal state (NC/NO) and mounting method (Body Porting/Sub-base) meet requirements.

  4. Confirm the Voltage Code: Strictly match the power supply, avoiding confusion between AC and DC.

  5. Add the Additional Code: Special environments (explosion-proof, low-temperature, corrosive) require the corresponding Additional Code.

If you still have questions about the model code, you can log in to the Airtac official website's "Model Search" tool, enter part of the code to get the full model meaning, or contact the technical support team for assistance.

Summary

The Airtac solenoid valve model code is a "parameter concentrate." By mastering the decoding logic of "Series + Structure/Specification + Function + Voltage + Additional," you can quickly understand the product's core parameters and avoid selection errors. The next time you encounter a complex model, try breaking it down part by part using the method in this article, and selection will become simple and efficient.

Call to Action (CTA)

  • Model Lookup: Log in to the Airtac official website (https://www.airtac-shop.com) and use the "Model Code Search" tool to decode.

  • Consultation: Provide the model you are having trouble with and contact the technical team for a detailed parameter interpretation.

  • Download Coding Manual: https://www.airtac-shop.com (Technical Support - Document Center - Model Coding Rules)

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