PRESSURE SENSITIVE VALVE CORE

A pressure sensitive valve core usable within a valve stem of an inflatable or pressurized apparatus and configured to automatically maintain a manufacturer's recommended air pressure within the inflatable or pressurized apparatus throughout fluctuations in temperature and elevation, and to regulate the amount of air pressure being put into the inflatable or pressurized apparatus according to a manufacturer's recommended air pressure. The pressure sensitive valve core includes a body and a spring valve mechanism including a spring designed according to Hook's Law to automatically close the spring valve mechanism against the body when a predetermined amount of pounds per square inch (PSI) is inserted into the inflatable or pressurized apparatus.