This 1/2 in. lead free anti-siphon hot or cold water vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to back siphonage. It consists of polished chrome plated lead free construction, chemical resistant silicone seat disc, chrome hood, and an atmospheric vent to prevent spilling. It has a full size orifice to assure pipe size capacity and maximum flow. It is ideal for low flow, non-continuous hot or cold water health hazard installations such as on laboratory equipment.Lead free constructionChrome finishFemale NPT inlet and outletHot or cold waterDesigned to prevent the backflow of polluted water from entering into the potable water supplyIdeal for low flow, non-continuous hot or cold water health hazard installations such as on laboratory equipmentMaximum pressure is 125 psi. This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.