Views: 0 Author: Site Editor Publish Time: 2025-11-20 Origin: Site
The 3R series hand pull valve represents a crucial category of manually operated directional control valves in industrial pneumatic systems. Designed specifically for applications requiring immediate operator intervention, this valve serves as both a safety component and manual control element across various industrial environments. Its standardized design and reliable performance make it particularly valuable in emergency stop scenarios, maintenance operations, and specialized process control applications.
| Parameter | Specification | Standard/Testing Condition |
| Valve Type | 2-position, 3-way | Normally closed (NC) configuration |
| Operation Method | Manual pull-lever with spring return | - |
| Operating Pressure Range | 0.1 - 0.8 MPa | Optimal performance range |
| Proof Pressure | 1.2 MPa | Maximum withstand pressure |
| Temperature Range | -5°C to +60°C | Operational limits |
| Flow Capacity | Effective area: 7 mm² | Cv value: 0.39 |
| Seal Material | NBR (Nitrile Butadiene Rubber) | Standard configuration |
| Actuator Type | Roller lever | Manual operation |
In automated production lines, the 3R series hand pull valve serves as a critical safety component for immediate pneumatic system shutdown. When integrated into emergency circuits, the valve provides:
Instant pressure exhaust from critical system components
Manual activation without requiring electrical power
Visual confirmation of activation status
| Performance Indicator | Metric | Testing Standard |
| Activation Time | < 0.5 seconds | From pull to full exhaust |
| Reset Operation | Single-action return | Spring-assisted |
| Cycle Life | > 1,000,000 operations | ISO 13849-1 |
| Force Required | 15-20 N | Ergonomic optimization |
The valve excels in Lockout/Tagout (LOTO) procedures, providing positive isolation of pneumatic energy during maintenance operations. Key features include:
Positive air isolation preventing accidental re-pressurization
Physical lockout capability for safety compliance
Exhaust function for residual pressure release
| Industry | Application | Benefit |
| Packaging Machinery | Manual override for film sealing stations | Quick intervention without full system shutdown |
| Automotive Assembly | Localized control of clamping mechanisms | Precise manual positioning |
| Material Handling | Emergency stop for conveyor systems | Immediate system halt capability |
| Plastic Injection Molding | Manual ejection sequence initiation | Process flexibility |
System Integration
The 3R series demonstrates exceptional versatility in system integration:
Mounting flexibility: Panel mount or direct installation
Connection compatibility: Standard ports for global interoperability
Space optimization: Compact design (typical footprint: 60×40 mm)
Preventive maintenance interval: 6 months for high-cycle applications
Seal replacement: Recommended at 500,000 cycles
Visual inspection: Monthly check for lever mechanism integrity
Mechanical operation ensures functionality during power outages
Environmental resistance to industrial contaminants
Temperature stability across specified operational range
| Factor | Manual Valve | Electro-Pneumatic Alternative |
| Initial Cost | Low | Medium to High |
| Installation Complexity | Simple | Moderate |
| Power Dependency | None | Required |
| Emergency Response | Immediate | System-dependent |
| Maintenance Cost | Low | Moderate |
The 3R series Manual Pull Valve establishes itself as an indispensable component in modern industrial pneumatic systems through its:
Proven reliability in safety-critical applications
Versatile integration across multiple industries
Cost-effective operation and maintenance
Compliance with international safety standards
Its continued adoption across diverse industrial sectors demonstrates the enduring value of well-designed manual control interfaces in increasingly automated environments. The valve's combination of mechanical simplicity, robust construction, and standardized interfaces ensures its position as a fundamental component in industrial pneumatic system design.
