4H Series 5/2 & 5/3 Way Manual Lever Valve | Hand Operated Directional Control Valve

Brand: SOLH by Richge Technology | 5/2 5/3 Way Hand Lever Pneumatic Valve for Manual Debug & Safety Stop

1. Product Overview & Core Structure

     The SOLH 4H series is an AirTAC standard 5/2 way & 5/3 way manual lever directional control valve, also known as hand-operated spool valve. It switches pneumatic circuits purely by manual lever operation without electric or pneumatic control signals. Widely used for equipment manual debugging, emergency safety stop, and cylinder jog control, it features a precision spool structure and durable aluminum alloy body with dual positioning modes of spring reset and steel ball locking. Fully interchangeable with 4V solenoid valves and 4A pneumatic valves, it is a universal manual control component for standard pneumatic systems.

  1.1 Standard 5-Port Interface Definition

     • P Port: Main compressed air inlet port

     • A/B Working Ports: Dual output ports for connecting double-acting cylinders to control extension and retraction strokes

     • R/S Exhaust Ports: Pressure relief exhaust ports, compatible with standard muffler installation for noise reduction

     • Drive Mode: Straight manual lever toggle operation

     • Structural Feature: High-precision spool type, high-strength aluminum alloy body, spring reset / steel ball positioning structure for stable operation

2. 5/2 Way Manual Lever Valve (Two Position)

  2.1 Spring Manual Reset Type (4H210/310/410)

     • Working Principle: Toggle the lever to reverse the air circuit; the lever automatically resets by spring force after releasing hands.

     • Core Characteristics: Instant reset with hand release, excellent anti-misoperation performance and high operational safety.

     • Typical Model: 4H210-08 (G1/4 port, 5/2 way spring reset manual valve)

  2.2 Manual Locking Type (4H210L/310L)

     • Working Principle: Equipped with lever self-locking structure. The valve maintains the reversed position after toggling and needs manual reset to return.

     • Core Characteristics: Stable positioning and long-term position holding, effectively preventing accidental touch and misoperation, suitable for long-time working conditions.

     • Typical Model: 4H210L-08 (G1/4 port, 5/2 way locking manual valve)

3. 5/3 Way Manual Lever Valve (Three Position)

  4H230/330/430 series 5/3 way manual valves adopt dual-stable steel ball positioning design, with three professional middle position functions to meet advanced pneumatic control requirements.

     • Closed Center (C Type): Fully closed at middle position. Realizes cylinder locking, pressure holding and anti-falling protection for suspended and vertical stations. Typical Model: 4H230C-08

     • Exhaust Center (E Type): A/B working ports communicate with exhaust ports at middle position. The system fully releases pressure, enabling free cylinder floating, manual equipment debugging and safety protection. Typical Model: 4H230E-08

     • Pressure Center (P Type): P air inlet communicates with A/B ports at middle position, converting double-acting cylinder to single-acting output for synchronous clamping and force balance control. Typical Model: 4H230P-08

4. Standard Model Coding Rules & Common Models

  1. Coding Logic: 4H [Size Code] [Function Code] - [Port Size]

  2. Mainstream Common Models

     • 4H210-08: 5/2 way spring reset, G1/4 port universal manual valve

     • 4H210L-08: 5/2 way self-locking long-term position holding type

     • 4H230C-08: 5/3 way closed center, cylinder pressure holding & locking model

     • 4H310-10: 5/2 way spring reset, G3/8 large flow manual control valve

5. Universal Core Technical Parameters

6. Core Product Advantages

     • Pure Manual Explosion-Proof Safety Performance: No electrical components and power supply required, zero spark risk. Perfectly suitable for equipment debugging, emergency stop operation and manual control in flammable, explosive and dusty environments.

     • Dual Positioning Modes for Full Scenarios: Spring reset type for instant safety reset and anti-misoperation; locking type for long-term stable position holding, covering short-time jog and long-time working conditions.

     • Versatile Three-Position Middle Functions: Equipped with C/E/P three middle modes to realize cylinder locking & pressure holding, system safety pressure relief and synchronous clamping balance control.

     • Flexible & Universal Installation: Supports panel mounting and base mounting with multi-angle fixed installation. Completely universal and interchangeable with 4V electric control valves and 4A pneumatic control valves in installation dimensions.

     • Stable & Durable Operation: Precision spool matching and steel ball positioning structure ensure clear hand feel, crisp reversing, low friction and long service life.

7. Typical Application Scenarios

     • Manual debugging, jog operation and maintenance safety control of double-acting cylinders

     • Safety door interlock and emergency stop pneumatic circuits, manual control for explosion-proof zones

     • Manual reversing control for non-power equipment and automated production lines

     • On-site replacement and debugging of 4V electromagnetic valves and 4A pneumatic valves for flexible switching of electric/pneumatic/manual control modes

One Sentence Summary

     The SOLH 4H series is a universal 5/2 & 5/3 way manual lever valve with reset/locking dual positioning and C/E/P three middle functions. Featuring pure manual safety operation and 4V/4A full interchangeability, it is the standard hand-operated valve for pneumatic system manual debugging and safety emergency stop control.