Barnes & Jones 3856 Vacuum Breaker

Vacuum Breaker; Type O-Ring and Spring Pressure; Nominal Size 2-3/8 Inch; End Connection 1/2 Inch Threaded; Body Material Brass; Disc Material Silicon; Temperature Rating 350 Deg F; Pressure Rating 125 PSIG; Used On Item Air Heat Coil, Air Heater, Shell and Tube Heat Exchanger, Make-Up Air Coil, Textile Dry Can, Steam Boiler, Storage Heater, Jacketed Kettle, Steam Main Zoning, One Pipe Steam Non-Electric Valve; Material Stainless Steel (Spring/Valve), Silicon (Seat); Outlet Size 0.75 Inch (Bottom), 1.25 Inch (Top); Spring Size 0.3 Inch