Abstract: A dryer having a drying chamber and an inlet housing structure wherein a heating device is located in the inlet housing structure. An outlet structure is provided with a main chamber and a secondary chamber wherein the flow of gas exiting the drying chamber is divided into a main flow of gas passing from the main chamber to the inlet housing structure and a secondary flow of gas passing from the secondary chamber past a condenser which is located in the secondary chamber to the inlet housing structure. Side chambers located in the housing have side walls which are formed from a perforated sheet of metal. The dryer will function in a recycled-air operation as well as a fresh-air operation.

Abstract: A valve adapted for installation in a pipe system which carries liquid or paste foodstuffs has a housing enclosing a cylindrical bore. At least one opening in the side of the housing provides a radial pipe connection. Two closure members of segmented cross-section are rotatably disposed in the bore for rotation into open and closed positions with respect to openings in the side of the housing. Cover plates close the opposite ends of the bore and a spindle extends through each plate into the bore. One spindle is connected to one closure member and the other spindle is connected to the other closure member so that the closure members can be rotated independently of each other. The closure member is provided above and below the openings for pipe connections in the side of the housing with conical wedge surfaces each coaxial with the longitudinal axis of the bore and diverging away from the opening. The housing is provided with wedge surfaces for cooperating with those on the closure members.

Abstract: A valve adapted for installation in a pipe which carries foodstuffs has a housing enclosing a cylindrical bore. At least one opening in the side of the housing provides a radial pipe connection. At least one closure member of segmented cross-section is rotatably disposed in the bore for rotation into open and closed positions with respect to the openings in the side of the housing. A pipe connection is also provided at one end of the housing which opens axially into the bore. The closure member is urged by wedge surfaces radially outwards against the wall of the bore. The closure member is provided above and below the openings for pipe connections in the side of the housing with conical wedge surfaces each coaxial with the longitudinal axis of the bore and diverging away from the opening.