Elevated cover for backflow prevention device

摘要

An apparatus for maintaining the temperature of material conveyed through fluid conveying devices. The apparatus may include an enclosure supported upon a chase or chases, which may extend from the enclosure downwardly to the frost line. Heating elements may be included within the chase(s) or enclosure to maintain the temperature of the material and the fluid conveying devices surrounding the material above a predetermined setpoint all the way to the frost line. The enclosure may employ a suitable valve to facilitate the removal of discharged material from the enclosure in applications where the fluid conveying device discharges material to the atmosphere.