Description
The Schneider Electric (Barber Colman) PNV-145-45 Black Spring is a pneumatic actuator part to establish the control pressure range in valve modulation systems. The 510 PSI rating defines the air pressure span that determines actuator response for opening and closing adjustments, while the black color coding identify the calibrated range for correct installation. It is fitted inside MK-2690 actuator assemblies to maintain stable pressure behavior during operation. Within HVAC systems, it is used in pneumatic control networks for regulating valves in air handling and hydronic applications, supporting controlled adjustment of airflow or water flow.
