A connector has a valve that cycles air from a pump to outlet socket ducts that are complementary to inlet plug ducts. A button is atop a cover enclosing a ring. A spring biases the ring and button upwards. The cover and ring have an opening receiving a disc and a nose, with slots aligned with tabs. The plug is around a region of the opening. The disc has an upper latch lug engaging a rib integral with a plate atop the opening region. The bottom of the disc has a lower latch lug, which engages the bottom of the ring, comprises two parts separated by a slot. The ducts are in a resilient member between an outlet plate and a stator of the cycling valve. Bores terminate at tubes having deformable noses, which abut the disc to form a seal. The plug releases by depressing the button.
