Hydro-regulator by Palaplast. The Hydro-regulator is an accessory that is easy to use and connect. It can be indirectly connected to a garden hose with the help of a 1/2" & 3/4" garden hose quick connector. During its use, by rotating the nut of the hydro-regulator located at the front end (water outlet), we can control the water stream, even with the ability to stop the supply. It can be used for watering grass, pots, as well as for washing vehicles and floors.