Non-return valve for a solenoid valve and associated solenoid valve

A solenoid valve, comprising:

• a magnet subassembly;
• a valve cartridge;
• and
• a lower valve portion including a fluid inlet and a fluid outlet, wherein:
• a first fluid channel is formed between the fluid inlet and the fluid outlet, the first fluid channel having a flow cross-section configured to be adjusted by a main valve,
• a second fluid channel is formed between the fluid inlet and the fluid outlet, the second fluid channel having a flow cross-section configured to be adjusted by a direction-orientated non-return valve, and
• the non-return valve includes:
• a non-return valve seat arranged at an edge of the second fluid channel;
• and
• a movable closure element configured to carry out a direction-orientated throughflow and sealing function, the movable closure element including a sealing cone, an abutment base, and a resilient sealing ring, the resilient sealing ring arranged between the abutment base and the sealing cone, wherein:
• the abutment base forms, in the event of sealing, a ring support face portion for the resilient sealing ring,
• a mechanical axial stop portion extends toward the abutment base from the non-return valve seat and includes a first support face facing the abutment base
• a second support face portion is formed at an outer edge of the abutment base facing the first support face and spaced apart from the ring support face portion,
• in the event of sealing, the first support face forms with the second support face portion a mechanical axial stop for the movable closure element with the resilient sealing ring contacting the non-return valve seat and an axially extending side of the mechanical axial stop portion,
• the mechanical axial stop portion is a protrusion of the lower valve portion,
• the protrusion defines a first outer diameter,
• the abutment base defines a second outer diameter, and
• the second outer diameter matches the first outer diameter.

A solenoid valve, comprising:

• a magnet subassembly;
• a valve cartridge;
• a lower valve portion including a fluid inlet and a fluid outlet;
• a first fluid channel formed between the fluid inlet and the fluid outlet, the first fluid channel having a flow cross-section configured to be adjusted by a main valve;
• a second fluid channel formed between the fluid inlet and the fluid outlet;
• and
• a direction-orientated non-return valve configured to adjust a flow cross-section of the second fluid channel, the direction-orientated non-return valve comprising:
• a closure element movable along an axis, the closure element including a sealing cone, an abutment base, and a resilient sealing ring, a ring support face portion of the abutment base supporting the resilient sealing ring at a location between the abutment base and the sealing cone;
• a non-return valve seat having an inlet extending from the second fluid channel;
• and
• a mechanical axial stop portion extending toward the abutment base from the non-return valve seat to and including a first support face extending directly radially outwardly from an outlet of the non-return valve seat, the first support face in opposition to and facing a second support face portion of the abutment base, which is coplanar with the ring support face portion, at a location radially outwardly of the resilient sealing ring, such that in the event of sealing, the first support face forms with the second support face portion a mechanical axial stop for the movable closure element with the resilient sealing ring contacting the non-return valve seat and the mechanical axial stop portion, wherein
• the mechanical axial stop portion is a protrusion of the lower valve portion,
• the protrusion defines a first outer diameter,
• the abutment base defines a second outer diameter, and
• the second outer diameter matches the first outer diameter.