Epoxy resin painted steel body - Brass automatic air vent - Brass drain valve on bottom - HDPE removable internal element - One neodymium rare earth magnet - 150 PSI maximum working pressure - 32 degrees to 210 degrees maximum working temperature range with insulation - 32 degrees to 230 degrees maximum working temperature range without insulation - 100 percent removal to micro-bubble level - For use with water and up to 50 percent maximum glycol antifreeze