The PLUMBVENT from Caleffi North America is a space-saving, low-lead automatic air vent designed to vent air from water at high points in plumbing and domestic hot-water system piping. Common applications include air elimination on domestic hot-water storage tanks, at the top of plumbing risers and near the inlet of a hot-water recirculation pump to reduce the potential for air lock. It offers a space-saving, compact size of less than 4 inches tall and is made of low-lead DZR Ecobrass. It complies with NSF/ANSI 372, Drinking Water System Components – Lead Content Reduction of Lead in Drinking Water Act, California Health and Safety Code 116875 S.3874 (AB1953), and Vermont S152. Its hygroscopic vent cap prevents potential dripping if/when the vent linkage gets dirty from scale buildup or debris. It has a 1/2-inch male NPT connection. 414-238-2360; www.caleffi.com.