Valve set

A valve set comprising:

• a valve body having a central hole defined therethrough and multiple passages defined around the central hole, a tubular portion extending from the valve body and having a lip extending inward from an inner periphery thereof, an extension tube extending from an underside of the valve body and including a rib extending from an outer periphery thereof, a bottom cap mounted to the extension tube and having an engaging groove defined therein which is engaged with the rib, the bottom cap including multiple ventilation holes;
• a flexible plate having an insertion inserted into the central hole of the valve body and the flexible plate sealing the passages from the underside of the valve body, a stud extending from a center of the bottom cap and inserted into the insertion on the flexible plate to position the flexible plate;
• a core member engaged with the tubular portion and restricted by the lip, an inlet tube extending from the core member and having a shoulder on an outer surface thereof, multiple releasing probes extending from an underside of the core member, and
• a spring mounted to the inlet tube and biased between the shoulder and an inner surface of the valve body, air being introduced into the valve set via the inlet tube, air being released when the core member is moved and the releasing probes push the flexible plate away from the passages.