Valve device and method

A valve device for a wellhead, the valve device comprising:

• a valve comprising first connection elements configured for sealingly and removably mounting the valve in a port of the wellhead of a hydrocarbon well;
• a spool unit having a through-channel extending between a first end and a second end of the spool unit, second connection elements arranged in the through-channel, and a flange, the flange configured for sealingly mounting the spool unit to the wellhead, aligning the through-channel with the port;
• and
• a plug comprising third connection elements configured for sealingly and removably engaging the second connection elements and attaching the plug in the through-channel,
• wherein the spool unit has a projecting portion near the first end of the spool unit and the projecting portion comprises the flange, wherein a diameter of the projecting portion is greater than a diameter of a middle part of the spool unit,
• wherein the projecting portion comprises a first conduit extending through a side wall of the valve device and into the through-channel, wherein an end of the first conduit is directly connected to the valve,
• wherein the plug is configured to block the through-channel to prevent fluid from flowing therethrough.