NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

Reduced one pipe size, valved, and tied into the building sanitary stack. Through a water-seal trap so steam cannot enter the room. Into the expansion tank so discharged water is saved. Full size, with no valves or obstructions, to a safe point such as within 18 inches of the floor or an open receptacle.