Flow activated magnetic switch valve with G1/4 inch thread. Lightweight, compact and durable for reliable everyday use. Designed for low water pressure startup and safe operation. Startup flow 300 ml/min; response time under 1 second. How it works Water in the preset channel pushes a magnet to change position. When the magnet reaches the designated tube, the magnetic field actuates the downstream path. When water stops, the spring returns the magnet to its rest position and the downstream path is disconnected. Key specs Thread: G1/4 inch Startup flow: 300 ml/min Response time: 1 s Construction: durable, lightweight Benefits Fast, reliable flow sensing for system control Simple installation with standard fittings Compatible with typical low pressure water lines Use scenarios Coffee machine or beverage dispenser water line interlock Home irrigation, drip or hydroponics safety flow switch Laboratory instrument cooling or reagent line safety valve