Weekly Product Gallery: Asco, Kohler, Viega, Grohe, Taco, Sloan

This week's gallery highlights: a two-way composite valve for reverse osmosis systems; a high-efficiency, two-piece toilet; reduced-flush in-wall water closet carriers; an updated bath faucet collection; a zone valve for closed-loop hydronic heating and cooling; and a line of energy-efficient hand dryers.