Poly Processing has written a short eBook on full drain outlets and the IMFO system. It is available for download at the end of this blog.
Vertical chemical storage tanks normally have an outlet as a means to empty the tank. In the past and even now, this has been accomplished by drilling a hole in the bottom sidewall of a tank and inserting an outlet post-production.
Poly Processing provides a molded in full drain fitting called the IMFO which stands for Integrally Molded Flanged Outlet. Those first 2 letters “IM” for "Integrally Molded” are a distinct type of full drain to be discussed in this blog, and compared against a metallic insert outlets, which are not actually full drain and present significant disadvantages. Let’s take a closer look at each type.