Schneider Electric (Barber Colman) AV-401 Linkage Kit The universal mounting bracket is

The universal mounting bracket is pre-drilled to match field-standard footprints

This varies by the boiler's BTU rating

using this white color-coded spring ensures the pilot maintains the ±0

ensuring a steady needle and flutter-free performance during critical diagnostic and charging procedures

requiring a manual intervention to reset once the fault condition is addressed

Schneider Electric (Barber Colman) AV-401 Linkage Kit The universal mounting bracket isThe Schneider Electric AV 401 Linkage kit is engineered for field mounting MK 4600 series pneumatic actuators onto VB 7000 and VB 9000 series valve bodies. Providing a precise mechanical interface, this Barber Colman linkage ensures stable stroke transmission and reliable valve modulation in pneumatic control systems. The heavy duty construction is designed to withstand the high cycle demands of HVAC applications, accommodating VB 7xxx valves in sizes