Jacketed Stainless Steel LP Tank with Internal Condensing Coil and Dip Tube Jacketed Stainless Steel LP Tank Size:50# Bare Tank The Internal flange of the Lidocaine Hydrochloride is a The Internal flange of the clamp is much more precise offering better dispersion of pressure on the sealing face of the gasket which allows to the system to seal without having to overtighten the clamps The resin should be stored in its original container and away from direct sunlight or other sources of UV light unlike a normal carbon steel LP tanks These tanks feature an exterior jacket to allow the user to circulate fluid around the outside of the tank while having an internal condensing coil on the inside of the tank to help condense hot vapors