Humphrey 310/410 Series offers you reliability, high flow and tight sealing in a compact, versatile solenoid valve. The 1/8 pipe, direct acting 3 and 4-port poppet valves are ideal for efficient, cost effective media control in a variety of industries, from medical device to factory automation. Combine 3 and 4-Way stacking or manifold mount models in multiple valve solutions. Produced to Humphrey's industry leading, stringent leakage requirements. RoHS and REACH compliant. Made in the USA.