A high temperature warning system for a vehicle steer axle air pressure supply, a normally-closed valve in fluid communication with pressure supply, a heat sensitive control capable of opening the normally-closed valve upon a predetermined temperature, the...

A valve stem may comprise an auxiliary port. Devices such as an air pressure gauge, a tire pressure monitoring system sensor, temperature gauges and one-way valves may be mounted to the auxiliary port. A valve stem with auxiliary port may be used in an aut...