Hydrometers from Netafim USA are for use in commercial, sports field and institutional irrigation applications. Designed for high pressure remote applicatins, Hydrometers are a master valve, water meter and flow sensor all in one unit. The double-chambered valve provides quick acting and positive opening and closing. It has a hermectically sealed water meter that is simple to operate and maintain. Reliable performance and energy efficiency make the Hydrometers a rugged, exceptional choice.