The PC3F in-line, wet rotor circulator with universal flange is designed for applications in closed-loop hydronic heating and cooling systems, as well as in solar systems. The pump is non-submersible and for use in dry, frost-free, well-ventilated installations. Twist-To-Fit Universal Flange, Rotates 90 to fit most installations with a single product.3 pump sizes cover every application3-speed versatility maximize efficiency and provide sufficient flow rates with a single pumpUniversal design replaces wide range of competitive models with just one brandTwist-to-fit universal flange, rotates 90 to fit most installations with a single product