Check valve and valve body

A check valve comprising:

• a pair of members comprising clamping surfaces;
• and
• a valve body group provided with a plurality of valve bodies clamped by the clamping surfaces from both sides in a thickness direction of the valve body, wherein
• each of the valve bodies comprises an outer frame, a sealing part arranged inside the outer frame and configured to open and close a fluid path formed in one of the pair of members, and a coupling part configured to allow fluid to pass therethrough in the thickness direction and configured to couple the outer frame and the sealing part to each other,
• the coupling part is constituted by a plurality of connecting rods that are radially arranged at equal intervals in a circumferential direction with the sealing part at a center, each of the plurality of connecting rods being inclined toward a side of the fluid path,
• the outer frame, the sealing part, and the coupling part are formed from elastic bodies,
• the outer frame has a thickness set to be larger than an interplane dimension between the clamping surfaces when the pair of members are joined together,
• when the pair of members are joined together, the plurality of connecting rods are curved and the sealing part is displaced toward one side in the thickness direction by elastic compressive deformation in the thickness direction of the outer frame clamped by the clamping surfaces of the pair of members,
• the plurality of valve bodies comprise an outflow side valve body that allows the fluid to pass in one direction of the thickness direction, and an inflow side valve body that allows the fluid to pass in another direction of the thickness direction, and
• the outflow side valve body and the inflow side valve body are connected to each other with a connecting part having a rod shape.