The straight seated compact externally operated valves include HP230N, which is compact and externally operated straight seat valve for use in robust industrial applications. The externally operated valve can operate at very high medium temperatures and viscosities, and is insensitive to dirt particles in the medium. It is robust, compact construction and straight-seated piston. It has brass NC versions as standard one. The medium temperature range is up to 180 °C. The connections range is from 1/4″ up to 1/2″.