Abstract: A valve monitoring system includes: a programmable logic controller (PLC), where the programmable logic controller receives signals from sensors integrated into at least one valve; a linear potentiometer connected to a valve by a threaded fitting; a pneumatic actuator, where the pneumatic actuator includes a pneumatic sensor; position signals sent from the linear potentiometer to the PLC; pneumatic signals sent to the PLC from the pneumatic sensor; and data signals based upon the position signals and pneumatic signals. Preferably, a spring extends from a spring extends from the linear potentiometer to a metal plate that supports a diaphragm, where the metal plate pushes on the diaphragm to actuate the valve. The data signals sent from the PLC relate to conditions within the valve.