Watts Regulator Co. has introduced the Series 775 and 775DCDA Sentry Series Double Check and Double Check Detector Assembly backflow preventers. These valves make refrofit installations easier due to reduced lay length. The Sentry Series allows the placement of a double check or double check detector in the same space as most single detector checks. The Sentry Series also features stainless steel construction for improved corrosion resistance. The valves are available in 3"-8" sizes. www.wattsreg.comWatts Regulator Co.