Product Focus: Radiant Heating Systems Issue: 9/01 Stadler-Viega has made the universal desire for a trouble-free, flexible and efficient radiant floor heating system a reality with its complete product offering. Solid brass manifolds, pumping and injection stations expandable to virtually any size, oxygen barrier cross-linked PEX tubing, control strategies for any project requirement and CAD Layout documentation serve installation methods of any choice. Stadler-Viega.