Valve insert for a valve cartridge, corresponding valve cartridge for a solenoid valve, solenoid valve having said valve cartridge and method for producing a valve insert

A valve cartridge for a solenoid valve comprising:

• a capsule,
• a magnet armature which is movably guided within the capsule,
• a valve insert which is inserted into the capsule by a first end, the valve insert including a one-piece, slotted sleeve that defines at least one radial bore, the at least one radial bore being configured to provide an inflow opening and/or outflow opening of a fluid stream, and
• a valve body with a main valve seat,
• wherein the magnet armature which is moved by a generated magnetic force moves a plunger which is guided within the valve insert and which has a closing element with a sealing element,
• wherein the sealing element dips in a seal-forming fashion into the main valve seat of the valve body in order to carry out a sealing function, and
• wherein the at least one radial bore has a trumpet-shaped geometry configured to selectively influence the flow characteristics of the fluid stream.