HRZ100 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. This models includes a 30 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.