Device for delivery of sample fluid

A check valve insertable in a hose-barb connector, wherein the hose-barb connector comprises a junction point formed by a horizontal duct intersecting with a vertical duct having an inner diameter that is substantially the same throughout the entire length of the vertical duct and a port end at the end of the vertical duct, the check valve comprising

• an anchoring element,
• an elastomeric flap disc, and
• a connector rod connecting the anchor element and the flap disc,
• wherein the anchoring element is connected at one end of the connector rod and the flap disc is connected to the opposite end of the connector rod, such that in resting state, the side cross sectional view of the check valve is in the shape of an “I”, and
• wherein the check valve can be inserted with the anchoring element at the port end of the hose-barb and the elastomeric flap disc in proximity of the junction point of the hose-barb connector such that flap disc seals directly against the wall of the vertical duct.

A device for delivery of fluid, said device comprising

• at least two fluid ducts of flexible material having substantially the same inner diameter throughout the entire length of the duct, each of which in one end can be connected to a fluid source and in the opposite end connected to a manifold having an inlet end and an outlet end,
• at least one of said fluid ducts is connected to the manifold by a T-shaped hose-barb connector and comprises a pinch valve for closing and opening the duct and a check valve disposed in the each one of said fluid ducts in the end thereof connected to the manifold between the pinch valve and the manifold, wherein the check valve of the fluid duct situated nearest the inlet end of the manifold as seen in a direction from the inlet end to the outlet end of the manifold is disposed in the manifold up-stream of and close to the adjacent fluid duct, and
• an additional check valve disposed in the manifold up-stream of and close to each of said fluid ducts being situated nearer the outlet end of the manifold than the two fluid ducts nearest the inlet end of the manifold,
• wherein the check valve comprises an anchoring element, an elastomeric flap disc, and a connector rod connecting the anchor element and the flap disc, wherein the anchoring element is connected at one end of the connector rod and the flap disc is connected to the opposite end of the connector rod, such that in resting state, the side cross sectional view of the check valve is in the shape of an “I” with the check valve inserted with the anchoring element at a port end of the T-shaped hose-barb and the elastomeric flap disc in proximity of a junction point of the hose-barb connector such that the flap disc sealing directly against the wall of the duct.