Zurn® Water Saver Trap Primer, 1-1/2 in Nominal, NPT x Slip End Style, Cast Brass, Polished Chrome

The water saver trap primer utilizes the temporary 'head' of the waste water in the p-trap which occurs during use of certain plumbing fixtures (lavatories and drinking fountains). This temporary head of water is sufficient to cause an overflow through the connection to allow a small amount of water to flow by gravity through the floor to the floor drain trap primer connection. Therefore, the floor drain trap seal is maintained. The water saver trap primer is used where trapped drains are installed in locations which are used infrequently or in other conditions that might permit water seal to evaporate, allowing sewer gas or objectionable and contaminating odors to escape through the drain.