Tire pressure control valve assembly

A valve assembly for a tire pressure control system used to control tire pressure of a vehicle, the valve assembly comprising:

• a unitary body comprising:
• attachment points for mounting the unitary body to a vehicle wheel end;
• one or more valve cavities formed in the unitary body;
• and
• a plurality of air passages formed in the unitary body, the plurality of air passages comprising an air supply passage for connecting to an air supply and a tire supply passage for connecting to a vehicle tire that is carried by the vehicle wheel end, the air supply passage and the tire supply passage being connected to each of the one or more valve cavities;
• one or more valves, each valve comprising:
• a valve element mounted to the valve cavity;
• an air supply chamber in communication with the air supply passage;
• and
• a tire supply chamber in communication with the tire supply passage;
• wherein the air supply chamber and the tire supply chamber are defined by the valve cavity and the valve element, the valve element being biased toward a closed position that seals between the air supply chamber and the tire supply chamber, the valve element moving to an open position that permits airflow between the air supply chamber and the tire supply chamber upon application of a predetermined pressure within the valve cavity against the valve element.