Vacuum Relief Valve, LFN36M1 Series, Lead-Free Brass Body, Flow Capacity: 15 cfm, Maximum Temperature: 250 Deg F, 2 inch Length, Pressure Range: Working: 200 psi, Steam: 15 psi, Dimensions: 2 inch H, Standards: ANSI Z21.22, CSA Certified, For Use With: Water Heater/Tank Applications, Domestic Water Heaters And Supply Tanks, Table Top Heaters, Jacketed Steam Kettles, Unit Heaters, Low Pressure Steam Systems And Steam Coil Heaters