Design, control and installation of radiant systems have been made much easier with the introduction of Taco Inc.’s all-in-one injection mixing system – the Radiant Mixing Block. It combines a variable speed injection mixing control, injection circulator, system circulator and air elimination into a single unit. With only four pipe connections required, it greatly reduces installation time, and affords substantial space savings. Can be set up as an outdoor reset control, a set-point control or a delta T limiting control.