- Active Preheater
- ACQUITY Arc
The back lock ferrule design for the three-piece APH fitting is 700010009.
For additional information, see Install 3-Piece Finger-Tight Fitting with APH.
The ferrules for these products are not interchangeable. The OD/ID of the compression fitting for Arc and Acquity PLUS is different than older Acquity products. Older Acquity products will not accept the captive ferrule design 700010009. That will only fit in the newer compression screws.
Video Reference: Install 3-Piece Finger-Tight Fitting with APH - http://site-436448.bcvp0rtal.com/detail/videos/how-to-series/video/6033348301001/install-3-piece-finger-tight-fitting-with-aph?autoStart=true