HRZ Drip Zone Assembly stands in the market with no equal as the industry's first "one piece" low flow irrigation zone valve, filter, and regulator combination - so compact that it fits in a 6" round valve box!! On the outside HRZ100 moves away from the competitions traditional plastic construction, to a statement of strength and durability featuring commercial ready glass-filled nylon. Inside, HRZ100 can handle water flow as low as 0.1 G.P.M. and pressure to 120 PSI. Models include 20, 30, and 40 P.S.I. pressure regulation and 200 mesh filter. HRZ100 comes "drip-ready" with a .700 - .710 adapter for a quick and easy, out of the box, installation.