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A 3rd generation AVT™ (Advanced Valve Technology) modulating valve is installed on Sentra temperature control units manufactured starting in March 2002.
This document describes the design changes and their inherent benefits.
The chart below compares the AVT™ cooling valve introduced in 2002 with the valve introduced in 1996.
2002 AVT™ Valve
Valve : Valve body is stainless steel.
1996 AVT™ Valve
Valve body is brass.
2002 AVT™ Valve
Designed for modulation valve duty.
1996 AVT™ Valve
Modified for modulating valve duty.
2002 AVT™ Valve
Utilizes O-ring for stem seal.
1996 AVT™ Valve
Modified for modulating valve duty.
2002 AVT™ Valve
Square drive stem.
1996 AVT™ Valve
Threaded drive stem.
2002 AVT™ Valve
Valve has mounting flange allowing the motor to directly mount for easy alignment.
1996 AVT™ Valve
Valve body has no mounting flange which requires the motor to be mounted separately on the casting making alignment critical.
2002 AVT™ Valve
Mounting flange and square drive stem allow a one piece extruded coupling with NO set screws.
1996 AVT™ Valve
Mounting geometry requires a two piece coupling with 4 set screws.
2002 AVT™ Valve
High temp ABS drip cover.
1996 AVT™ Valve
Aluminum drip cover.
Download the PDF document.
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