From the Manufacturer

The DERNORD Tri Clamp Ball Valves stainless steel 304 is made of stainless steel 304 for higher strength and greater corrosion resistance than stainless steel 302. This valve has a lockable lever handle for manual on/off control. PTFE seats reduce the risk of leakage. The valve is full port for reduced friction; The working pressure is 1.6Mpa for water, oil, and gas (WOG), and the maximum working temperature is 300 degrees Fahrenheit.