The MS-500E-B is a part of the Miyama Honke Series from Japanese manufacturer Miyama Trading. It is a thermostatic control valve designed to maintain a preset temperature in air conditioning and refrigeration systems. It can be used in a wide range of applications, including home heating, water heating, and commercial cooling. The MS-500E-B is a compact, adjustable, robust and reliable valve that can be used in residential and commercial applications alike. It is easy to install and maintain, and can be used with a wide range of energy sources, including electric, gas, steam, and oil. Additionally, it comes with a wide range of safety features, including an adjustable cut-off valve and a thermal limit switch.