Sensortechnics
presents a new series of isolated diaphragm solenoid valves from Parker Life Sciences. Liquid X valves are high-performance, two-way normally closed or three-way universal fluidic control devices. Liquid X is designed for compatibility with a wide range of aggressive liquid and gaseous media, such as bleach, acids and chlorinated solvents.
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September 1935: Class A4 locomotive enters service
And your last sentence continues to this day!