The Jones Triton J-4048 dome top wet barrel fire hydrant from Mueller Water Products gives access to an auxiliary port at the top of the hydrant that allows it to be used for other purposes, such as construction water access and installation of pressure sensors. In the event of an emergency, the horizontal hydrant nozzles remain fully accessible to the fire department or utility, even if the dome port is being used. The dome top feature is also available as an option with the J-4065 model. 800-523-8618; www.joneswaterproducts.com.