Abstract: The hollow valve plate 1 of a piston compressor for liquid-cooled reed valves comprises a single half-shell 3 with cooling channels 4 which are open on the cylinder side, which said half-shell is covered by a reed plate 2 which is preferably welded or glued at least along the cooling channels 4 and has in the area of the suction openings 5 in each case one suction reed 6 which is machined out and is integrally connected on one side. Production and assembly are thereby simplified and the clearance is reduced.

Abstract: The hollow valve plate (1) of a piston compressor includes a single half-shell (3) with cooling channels (4, 5) that are open toward the side of the pressure valves (8), with said half-shell being covered by a reed plate 2 that is preferably welded or glued at least along the cooling channels (4, 5), and that is formed as a lift-stop (9) for the inserted closing plates (10) in the area or the pressure valves (8). This results in a simplification of the production and assembly of such valve plates.

Abstract: The hollow valve plate (1) of a piston compressor includes a single half-shell (3) with cooling channels (4, 5) that are open toward the side of the pressure valves (8), with said half-shell being covered by a reed plate 2 that is preferably welded or glued at least along the cooling channels (4, 5), and that is formed as a lift-stop (9) for the inserted closing plates (10) in the area or the pressure valves (8). This results in a simplification of the production and assembly of such valve plates.

Abstract: The hollow valve plate 1 of a piston compressor for liquid-cooled reed valves comprises a single half-shell 3 with cooling channels 4 which are open on the cylinder side, which said half-shell is covered by a reed plate 2 which is preferably welded or glued at least along the cooling channels 4 and has in the area of the suction openings 5 in each case one suction reed 6 which is machined out and is integrally connected on one side. Production and assembly are thereby simplified and the clearance is reduced.

Abstract: An apparatus for irradiating fluids includes a conduit (11) through which the fluid flows, in which a static mixer (21) is disposed and which passes through a cooling vessel (16) having an annular cross-section. This arrangement is surrounded by several U-shaped fluorescent tubes (19, 20), whose legs, extending parallel to the conduit, are distributed around the periphery of the conduit (11). The mixer (21) effects a highly turbulent flow, such that all parts of the fluid are uniformly irradiated with radiation. If the fluid is a glue which is to be preactivated by the radiation, then the turbulent flow and the reaction rate, which is reduced by the cooling, retard the setting of polymerized fluid components on the inner wall of the reaction conduit, and thereby also inhibit the gradual blockage of the conduit (11).