Chassis Heat Problem

[Patticake]

Does anyone know the name and/or a part number for the front chassis
heater control valve. Note: it is not a sporlen valve.
This is on a 90PT. It appears to be an electric motor operated valve that
controls the amount of fluid to the front heater. It is located above the front
step area. The factory blueprints call it a "heater control valve", but no other
description.

Steve Gureasko
90WBWL 401/2PT Jus Chillin
Ponchatoula, La.