A testing cap for a valve body includes a base configured to releasably attach to the valve body and to cover an opening in the valve body. The opening is configured to receive a valve cartridge and the base covers the opening in place of the valve cartridge. The testing cap includes a structure extending from the base. The structure is configured to be oriented relative to the valve body in a first orientation and a second orientation. The structure allows fluid to enter the valve body through an inlet port in the valve body and exit the valve body through an outlet port in the valve body when the structure is oriented in the first orientation. The structure covers at least one of the inlet port and the outlet port when the structure is oriented in the second orientation, thereby preventing fluid flow through the valve body.

The invention relates to a sanitary change-over valve (1) having a valve housing (2) which has one valve inlet (3) and two selectively actuatable valve outlets (4, 5), having a valve piston (6) which is movable from a first switch-over position in which the fluid is guided by way of a flow path that is routed through a first valve outlet (4) to a second switch-over position in which the fluid is guided by way of a flow path that is routed by way of a second valve outlet (5) as soon as that portion of the second flow path that is routed beyond the change-over valve (1) has been released, wherein the valve piston (6) is configured as a hollow body through which the fluid in the course of at least one of the flow paths is routed by way of at least one piston inlet (9) that is disposed on the piston circumference. The change-over valve according to the invention is characterized in that the fluid that is routed by way of the at least one piston inlet (9) in the course of the second flow path is routed by way of a first piston outlet that is provided on that piston end side that faces away from the piston base (10), and in that a flow throttle (12), a flow regulator (11), or a return flow preventer is provided in the first piston outlet.

The invention relates to a sanitary change-over valve (1) having a valve housing (2) which has one valve inlet (3) and two selectively actuatable valve outlets (4, 5), having a valve piston (6) which is movable from a first switch-over position in which the fluid is guided by way of a flow path that is routed through a first valve outlet (4) to a second switch-over position in which the fluid is guided by way of a flow path that is routed by way of a second valve outlet (5) as soon as that portion of the second flow path that is routed beyond the change-over valve (1) has been released, wherein the valve piston (6) is configured as a hollow body through which the fluid in the course of at least one of the flow paths is routed by way of at least one piston inlet (9) that is disposed on the piston circumference. The change-over valve according to the invention is characterized in that the fluid that is routed by way of the at least one piston inlet (9) in the course of the second flow path is routed by way of a first piston outlet that is provided on that piston end side that faces away from the piston base (10), and in that a flow throttle (12), a flow regulator (11), or a return flow preventer is provided in the first piston outlet (cf. FIG. 1).

A service valve for a valve body includes a base rotatable between an open orientation and a closed orientation relative to the valve body. When the base is in the open orientation, the service valve allows fluid flow into the valve body through the service valve. When the base is in the closed orientation, the service valve blocks the fluid flow into the valve body through the service valve. The service valve further includes a tab extending from the base. The tab prevents removal of a cover from the valve body when the base is in the open orientation.