Abstract: A pressure-regulating valve for a fluid medium that is at system pressure, e.g., for system pressures >1000 bar, has a valve housing with an inlet channel and at least one outlet channel. A valve seat arranged in the valve housing has a conical recess holding an axially mobile valve body with a lateral outer surface at least part of which is conical. The interaction of the valve body and valve seat regulate throughflow of medium from the inlet channel to the outlet channel. The valve seat, adjacent to the lateral outer surface of the valve body, includes a first pressure chamber from which there extends, in the direction of movement of the valve body, a throttle gap along the lateral outer surface of the valve body. The conical lateral outer surface of the valve body extends, in the direction of movement of the valve body, on either side of the pressure chamber through the conical recess of the valve seat.

Abstract: A pressure-regulating valve for a fluid medium that is at system pressure, e.g., for system pressures >1000 bar, has a valve housing with an inlet channel and at least one outlet channel. A valve seat arranged in the valve housing has a conical recess holding an axially mobile valve body with a lateral outer surface at least part of which is conical. The interaction of the valve body and valve seat regulate throughflow of medium from the inlet channel to the outlet channel. The valve seat, adjacent to the lateral outer surface of the valve body, includes a first pressure chamber from which there extends, in the direction of movement of the valve body, a throttle gap along the lateral outer surface of the valve body. The conical lateral outer surface of the valve body extends, in the direction of movement of the valve body, on either side of the pressure chamber through the conical recess of the valve seat.

Abstract: A device for processing a workpiece includes at least one plunger pump, which is drivable by means an electric motor and which generates a highly pressurized volume flow, which volume flow can be interrupted in controlled fashion and emerges from at least one connected consumer. The volume flow is conveyed at substantially constant high pressure via a pressure line to the consumer. The electric motor is a reluctance motor, which is controllable by a connected frequency converter. A pressure sensor is connected to the pressure line, which pressure sensor is connected to a controller.