Schneider Electric (Barber Colman) AV-420 Linkage Kit and Series 221 make-up feeders

and Series 221 make-up feeders

it has failed and requires immediate replacement

Its configuration facilitates reliable signal transmission between branch lines and sensing controllers

but going too short will prevent proper connection

Schneider Electric (Barber Colman) AV-420 Linkage Kit and Series 221 make-up feedersThe Schneider Electric AV 420 Linkage Kit is a field installable hardware set engineered for retrofitting and maintaining pneumatic control systems. Designed specifically to interface MK 4800 Series pneumatic actuators with VB 9XXX series valve bodies (1. 5 inch to 2 inch), this Barber Colman AV 420 kit ensures precise mechanical alignment for mission critical flow regulation. As a veteran technician, you know that maintainable air handling stability