Humphrey | 420 Series Solenoid Valve, 4/2, 1/4 NPSF 125 psi | 420-87-24VDC

Key Features:
- Compact direct-acting 4-way, 2-position pneumatic solenoid valve designed for 24 VDC operation.
- Four ports with multi-purpose capability (can function as normally closed, normally open, diverter/selector, or true 4-way).
- Inline piping with standard 1/4″ NPSF ports for easy integration into pneumatic control systems.
- Balanced poppet design offering a high flow coefficient (approximately Cv 1.0) and reliable performance from vacuum to ~125 psi.
- Robust materials suitable for compressed air, inert gas, and vacuum media.
- Fast response speed and ability to handle typical industrial cycle rates.
- Non-locking manual override on many versions for maintenance and testing.

Common Applications:
- Directional control of double-acting pneumatic cylinders in automation systems.
- Air flow control in manufacturing and assembly equipment.
- Integration into packaging and material handling pneumatic circuits.
- Pneumatic control panels and machine tooling requiring a 4-way valve.
- Air distribution and control in general industrial automation systems.