Pressure-release sealing cap

A pressure-release sealing cap for a reservoir, comprising:

• a rotatable platform with a central opening, operably connected to a hollow and rotatable enclosure, with an intervening space between said enclosure and said rotatable platform;
• a ramp disposed on said rotatable platform, said ramp including a first and second reference portions with said intervening space between said first and second reference portions;
• a movable plunger with a proximal end and a distal end, disposed through said central opening, said distal end connected to a valve, said plunger disposed to lift said valve;
• a movable pressure-release member with a guide stud, the movable pressure-release member pivoted to the proximal end of said plunger and said guide stud disposed on said ramp between said first and second reference portions, while said sealing cap is installed on said reservoir;
• and
• said movable pressure-release member along with said guide stud disposed to rotate on said ramp on rotation of said enclosure and said rotatable platform to lift said valve through said plunger, while removing said sealing cap from said reservoir.