A wellbore tool and a tool section interconnection fluid coupling

A wellbore tool section interconnection fluid coupling comprising:

• first and second coupling members with first and second mating ends, respectively, wherein the first and second coupling members are configured to be connected and disconnected relative each other, and wherein fluid is allowed to flow through the coupling members when connected,
• wherein the first coupling member comprises:
• an output section at the first mating end, an input section, and a middle section between the input and output sections;
• and
• a first cylindrical housing and a first valve element which is movably arranged inside said first cylindrical housing,
• wherein the first cylindrical housing comprises a valve seat which extends radially inwardly of the cylindrical housing,
• wherein the valve element is arranged to abut against the valve seat when the coupling members are connected, and further comprises:
• a hollow portion facing towards the input section;
• and
• a first support portion between the hollow portion and a seal groove,
• wherein the first support portion includes:
• a lateral bore arranged between the hollow portion and the first support portion and fluidly connecting an inside and an outside of said hollow portion;
• and
• fluid passages fluidly connecting the outside of the hollow portion with the output section when the first and second coupling members are connected.