Classification Information
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; parts of sanitary installations, water supply, heating, ventilating and sanitation equipment, namely, air admittance valves for drainage systems, vacuum valves, back-flow protection valves, anti siphonage valves, safety valves, pressure relief valves; taps
Environmental Control Apparatus