Founded in 1901 and headquartered in Kalamazoo, Michigan, USA, Humphrey boasts over 120 years of experience in the research and development of pneumatic components, establishing itself as a global leading manufacturer of solenoid valves. Its products are renowned for their high reliability, compact design, and wide-rging media adaptability. Certified to ISO 9001 and ISO 13485 standards, 96% of its supply chain originates from within the United States, ensuring consistent product quality.
Design Features and Technological Innovations
Direct-Acting Drive Structure
• The electromagnet directly drives the valve spool without requiring pilot air pressure, enabling zero pressure differential start-up and stable operation within a vacuum to medium-pressure range.
Corrosion-Resistant Material Combination
• Valve Body: Anodized aluminum (lightweight and corrosion-resistant)
• Valve Spool: Stainless steel (wear-resistant with a lifespan exceeding 1 million cycles)
• Seals: Fluororubber (FKM), resistant to petroleum-based oils and weakly acidic/alkaline media.
Modular Electrical Interface
• Standardly equipped with a DIN Micro Type C (9.4mm) interface, with options for 24-inch lead wires or conduit connectors, supporting rapid integration into PLC control systems.
Manual Emergency Function
• Some models are equipped with non-locking manual buttons, allowing for forced valve position switching during power outages to facilitate equipment debugging and emergency fault handling.