3V Series 3/2 Way Pneumatic Solenoid Valve | Direct & Pilot Operated NC/NO Control Valve

Brand: SOLH by Richge Technology 

1. Product Overview & Structural Interface

     The SOLH 3V series is a standard 3/2 way electrically controlled directional solenoid valve available in direct-acting and pilot-operated structures. Designed specifically for single-acting cylinder control, pneumatic circuit switching and vacuum system regulation, it provides two core configurations: Normally Closed (NC) and Normally Open (NO). With a durable aluminum alloy body, compact structure, fast response and optional zero-pressure startup, it serves as the standard universal control valve for miniature pneumatic automation systems.

  1.1 Standard 3/2 Way Port Definition

     • P Port: Main air inlet

     • A Port: Working port, connected to single-acting pneumatic cylinders or vacuum nozzles

     • R Port: Air exhaust port, install muffler for noise reduction

  1.2 Drive & Structural Classification

     • Drive Mode: Electromagnetic direct-acting / pilot-operated optional

     • Series Type: Direct-acting (3V1/3V2); Pilot-operated (3V100/3V200/3V300)

     • Body Material: High-strength aluminum alloy, lightweight and durable

2. Working Principle of 3/2 Way Valve

     The 3V series adopts single-coil control design, divided into NC and NO types with completely independent working logic, widely used for automatic reset cylinder and vacuum circuit control.

  2.1 Normally Closed (NC) – Most Common Type

  Applicable Models: 3V110, 3V210, 3V310

     • Power-off Reset State: Spring reset seals the P inlet port; Port A communicates with Port R for exhaust, no output pressure.

     • Power-on Working State: Electromagnetic force pulls the valve core to switch; P inlet connects with A working port for air supply; R exhaust port is fully closed.

  2.2 Normally Open (NO) Type

  Applicable Models: 3V120, 3V220, 3V320

     • Power-off Reset State: P inlet communicates with A working port for continuous air supply; R exhaust port is closed.

     • Power-on Working State: P inlet port is sealed; A working port communicates with R port for pressure relief and exhaust.

3. Series Classification & Specification Parameters

  3.1 Direct-Acting Series (3V1 / 3V2) – Zero Pressure Startup

  Core Advantage: Supports 0MPa zero-pressure startup, ultra-fast response speed (＜0.05s), stable performance for low-pressure and vacuum working conditions.

  • 3V1 Micro Series

￮ Port Size: M5, G1/8 (06)

￮ Flow Area: 10.2 mm² (CV=0.6)

￮ Typical Model: 3V1-06, 3V1-M5

  • 3V2 Mini Series

￮ Port Size: G1/8 (06), G1/4 (08)

￮ Flow Area: 17.0 mm² (CV=1.0)

  3.2 Pilot-Operated Series (3V100 / 3V200 / 3V300) – Large Flow

  Core Advantage: Large flow capacity and low power consumption; requires minimum startup pressure for stable switching, suitable for standard pressure pneumatic circuits.

  • 3V100 Series: Port size M5, G1/8 (06)

  • 3V200 Universal Series

￮ Port Size: G1/4 (08)

￮ Flow Area: 17.0 mm² (CV=1.0)

￮ Typical Model: 3V210-08

  • 3V300 Large Flow Series

￮ Port Size: G3/8 (10)

￮ Flow Area: 28.0 mm² (CV=1.65)

4. Complete Model Coding Rules & Order Examples

  1. Coding Logic: 3V [Series Code] [Function Code] - [Port Size] [Voltage Code] [Wiring Code]

  2. Standard Order Examples

     • 3V210-08-B: 3/2 way, NC type, G1/4 port, DC24V, DIN socket connection

     • 3V1-06-A: 3/2 way, NC type, G1/8 port, AC220V

5. Core Technical Parameters

6. Core Product Advantages

     • Dedicated 3/2 Way Design: Perfectly matched with spring-return single-acting cylinders, exclusive for clamping, jacking and reset pneumatic execution.

     • Dual Working Modes: Optional Normally Closed (power-off reset) and Normally Open (power-off working) types to adapt to diverse process logic.

     • Dual Drive Options: Direct-acting type supports zero-pressure startup for vacuum/low-pressure scenarios; pilot-operated type realizes large flow and low-power stable operation.

     • Compact & Durable: Mini integrated structure, excellent sealing performance, long service life and lubrication-free design.

     • Flexible Electrical Configuration: Multiple voltage specifications (AC220V/110V/24V, DC24V/12V) and dual wiring modes meet global matching demands.

     • High Compatibility: Same installation size as 3A pneumatic control valves and 3L hand pull valves, supporting direct replacement and upgrade.

7. Typical Application Scenarios

     • Automatic control of single-acting cylinders (clamping, jacking, spring reset mechanism)

     • Vacuum generator and vacuum suction nozzle system switching (direct-acting type supports negative pressure control)

     • Pneumatic circuit on-off control, equipment safety interlock, small actuator jog operation

     • Direct replacement for 3A air-controlled valves and 3L hand-operated valves in standard pneumatic systems

One Sentence Summary

     The SOLH 3V series is a standard 3/2 way electromagnetic directional valve with NC/NO dual modes and direct/pilot dual drive structures, professionally applied to single-acting cylinder drive and vacuum circuit control, serving as the core control component for miniature pneumatic automation systems.