Hydraulic coupling devices and assemblies

A coupling device, comprising:

• a stem having a first end and a second end,
• wherein a groove is defined in the stem proximate to the first end, and
• wherein a threaded portion is defined in the stem between the first end and the second end;
• a first engagement member disposed over the stem between the first end and the second end,
• wherein the first engagement member is movable relative to the threaded portion of the stem;
• an inner sealing member disposed in the groove,
• wherein, when the first engagement member is spaced apart from the threaded portion, the inner sealing member is retained in the groove for sealing against the first engagement member, and
• wherein, when the first engagement member is disposed adjacent to the threaded portion, the inner sealing member is removable from the groove;
• a washer provided over the first engagement member;
• an outer sealing member provided over the first engagement member, proximate to the washer;
• and
• a second engagement member disposed over the threaded portion of the stem.

A coupling assembly, comprising:

• a coupling device, comprising:
• a stem comprising:
• a first end;
• a second end;
• a groove disposed proximate to the first end;
• and
• a threaded portion disposed between the first end and the second end;
• a first engagement member disposed over the stem between the first end and the second end,
• wherein the first engagement member is movable relative to the stem;
• an inner sealing member disposed in the groove,
• wherein, when the first engagement member is in a first position, the inner sealing member is retained in the groove by the first engagement member, and
• wherein, when the first engagement member is in a second position, the inner sealing member is removable from the groove;
• a washer provided over the first engagement member;
• an outer sealing member provided over the first engagement member, proximate to the washer;
• a second engagement member disposed over the threaded portion of the stem;
• and
• a port disposed over the first end of the coupling device,
• wherein an inner surface of the port is configured to engage an outer surface of the first engagement member for coupling the first end of the stem to the port.