Here's one of the top products run in PME throughout the year 2002. Zurn PEX Plumbing & Radiant Heating Systems allow different areas of the building to simultaneously maintain different temperatures. They warm all the objects in a room directly and do not circulate airborne irritants. Zurn snow and ice melt systems can be installed under asphalt or pavers or in concrete slab, and they remove snow and ice from steps, driveways, sidewalks and wheelchair ramps. Zurn PEX Plumbing & Radiant Heating Systems.