The 153D "Smart" Exhaust Throttle Valve integrates all control, communication, and driver circuits via a compact "add-on" electronics module within a 253 Throttle Valve assembly, eliminating the need for a separate pressure control electronics module. The 153 is operable in two modes, flapper positioning or pressure control.
Resources
Manuals
153F Exhaust Throttle Valve with Integrated Controller Manual(441.3 kB, PDF) 153 Exhaust Throttle Valve Pin-outs(26.9 kB, PDF) 153D and 1253D Throttle Valve Controller Operation and Maintenance Manual(270.6 kB, PDF)