Waterless Trap Seal Protection -An ECO-nomic Alternative to Trap Primers

摘要

Today in nearly every building across North America - whether commercial (offices, warehouses, stores, etc.) or residential (homes, apartments, & condos) - there are floor drains. Because drains connect to the sewer system, some method of sealing must be used to protect against the backflow of dangerous and noxious sewer gases into work or living areas. In North America the standard is a water based seal in a p-trap. Water seals in p-traps work so long as there is water in the traps. In situations where there are infrequent uses of the drain; the water can evaporate (an effect exacerbated by the recent adoption of dry mop techniques), venting problems may cause the seal to be siphoned off when toilets or other fixtures are used, and old traps may leak or one may never have been installed. No seal = no protection from the known public health threat of noxious sewer gas.