Valve of a piston pump with a closing body

A valve of a piston pump, comprising:

• a sealing seat;
• and
• a closing body configured to be moved in an axially guided manner against the sealing seat, the closing body formed in two pieces, including:
• a damping piston having a first end and a second end arranged opposite the first end;
• and
• a closing element inserted within the damping piston, wherein the damping piston includes a flow passage through the first end and the second end,
• wherein the damping piston includes at least one channel through which an underflow, directed radially from outside to inside, of the closing element is possible, and
• wherein the flow passage is in fluid communication with the at least one channel.

A piston pump of a vehicle brake system, comprising:

• a valve including:
• a sealing seat;
• and
• a closing body configured to be moved in an axially guided manner against the sealing seat, wherein the closing body is formed in two pieces, the pieces including a damping piston and a closing element inserted therein,
• wherein the closing element is held on the damping piston such that the closing element is radially translatable within a radial spacing formed between a shaft of the closing element and the damping piston;
• wherein:
• at least one channel is formed on an end of the damping piston facing towards the closing element, and
• an underflow, directed radially from outside to inside, of the closing element is possible through the at least one channel;
• and
• wherein the at least one channel forms a segment of a flow connection through the damping piston to its other end.