Abstract: An apparatus for heating asphalt is used with a container storing a gaseous fuel under pressure. The apparatus includes one or more heaters, each of which includes an elongate infrared emitter, an elongate burner tube, and a Venturi tube. The infrared emitter includes an elongate emitter surface for emitting infrared radiation at the material when the infrared emitter is heated. The burner tube is coupled to the infrared emitter, and defines a burner tube interior for distributing an air-fuel mixture to a plurality of burner tube apertures for distributing the air-fuel mixture over a burner tube outer surface disposed opposite to and spaced apart from the infrared emitter. The Venturi tube is for mixing the fuel from the container with air to create the air-fuel mixture, and supplying the air-fuel mixture to the burner tube interior.

Abstract: An apparatus for heating asphalt is used with a container storing a gaseous fuel under pressure. The apparatus includes one or more heaters, each of which includes an elongate infrared emitter, an elongate burner tube, and a Venturi tube. The infrared emitter includes an elongate emitter surface for emitting infrared radiation at the material when the infrared emitter is heated. The burner tube is coupled to the infrared emitter, and defines a burner tube interior for distributing an air-fuel mixture to a plurality of burner tube apertures for distributing the air-fuel mixture over a burner tube outer surface disposed opposite to and spaced apart from the infrared emitter. The Venturi tube is for mixing the fuel from the container with air to create the air-fuel mixture, and supplying the air-fuel mixture to the burner tube interior.

Abstract: A backwater valve is described which includes a liquid retaining body having a top, a bottom, a first end, a second end, opposed sides and an inner chamber. A first flow conduit extends through one of the top of the body and the first end adjacent the top of the body and protrudes into the inner chamber. A second flow conduit extends from the inner chamber through the second end adjacent the bottom of the body and protrudes past the second end. An annular seal is positioned on an annular peripheral edge of the first flow conduit which protrudes into the inner chamber. A plate is pivotally mounted to the body. The plate having a wear resistant lubricious first face, a second face, a first end and a second end. The first end underlies the first flow conduit. The first face extends past the first flow conduit thereby serving as a spillway for liquids flowing through the first flow conduit. The plate is pivotally movable between a closed position and an open position.