Plast-O-Matic True Blue® Solenoid Valves Series EASMT & EASYMT for pressure, drain, and vacuum service; designed for all types of aggressive chemicals, salt solutions, acids, caustics, and ultrapure liquids such as deionized water. Plast-O-Matic solenoid operation provides instant on/off for precise control; Teflon bellows design eliminates fugitive emissions.