Humphrey is a century-old American manufacturer of pneumatic equipment (established in 1901), specializing in solenoid valves, cylinders, and fluid control solutions. Renowned for high reliability, rapid response, and modular design, its products are widely applied in industrial automation, power equipment, and harsh environments.
Core Design Features
1. Structural Optimization
Direct-Acting Drive Design:
No pilot pressure required; the valve core is directly driven by electromagnetic force, with a response time of ≤12ms and support for high-frequency operation (600 cycles per minute), suitable for rapid cycling systems.
Compact Aluminum Alloy Housing:
Lightweight design (approximately 6 ounces compared to similar products), with corrosion-resistant anodized treatment, adaptable to environmental temperatures ranging from -25°C to 125°C.
Three-Way Valve Function (3 Port/2 Position):
Normally Closed (N/C): The outlet is closed when de-energized and connected to the inlet when energized.
Multi-Purpose Configuration: Supports gas distribution, direction switching, or vacuum control, compatible with air/inert gas media.
2. Performance Enhancement
Wide Pressure Differential Adaptability:
Operating pressure range: 0–125 PSI (peak tolerance of 150 PSI), stable opening and closing at pressures as low as 4 PSI, suitable for low-pressure pneumatic systems.
Low-Power Consumption Coil:
Driven by 24VDC with a power consumption of only 4.5W (±10% voltage fluctuation tolerance), B-grade insulation certification, supports direct connection with a 24-inch lead wire or DIN connector.
Zero-Lubrication Design:
Sealing materials use nitrile rubber (NBR) or fluororubber (FKM), enabling maintenance-free operation and resistance to moisture, oil mist, and mild chemical corrosion.
Typical Application Scenarios
1. Industrial Automation Control
Gas Shielding Control in Welding Equipment (e.g., CO₂/MIG welders): Precisely regulates the on/off of shielding gas, with a response speed matching the 0.5-second welding cycle.
2. Vacuum Systems
On/Off Control for Laboratory Vacuum Chambers: Compatible with negative pressure environments (requires vacuum-specific sealing kits).
3. Pneumatic Actuator Drive
Directional Valve for Small Cylinders: Used in packaging machinery and assembly line positioning devices, ensuring stable thrust under low-pressure conditions.