Watts LF757DCDA OSY CFM 10 Part of the LF757DCDA Series Window Well Cover with a 6 inch thermostat with a 6 inch thermostat is installed directly in tank tapings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 8 IN Outlet Connection Type Grooved Joint Outlet Shutoff Valve Type Outside Stem And Yoke Gate Valve Outlet Thread Type Does Not Apply To Product Part Number 0191641 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series 957 Strainer No Technologies Does Not Apply To Product Tradename None Specification Sheet 957 This assembly consists of two independently operating tri link check valves 10 Maximum Working Pressure PSI 175 Meter Type CFM Minimum Temperature Celsius 1