VacuMaid 2-Piece 1-1/4 Inch Adapter, SF-290 Back-Up Plate

This is the two-piece 1-1/4 inch adapter VacuMaid fits behind its inlet valves to join the valve to central vacuum tubing during rough-in, SKU PF-244A.

VacuMaid publishes the fitment on its own PF244A-equipped fittings: use it behind the 1-1/4 inch WS629 series stainless inlet valves, it can fit into a 2 inch wall, and it is also used with the metal back-up plate. The SF290 named in this listing is that plate, which VacuMaid catalogues as a flanged metal back-up plate supplied with four Tinnerman nuts.

The same adapter is built into several of VacuMaid's flanged fittings rather than being used only on its own, among them the PF240A single flanged tee, the PF241A flanged coupling and the PF243A 90 degree flanged ell, so an installer working from a VacuMaid parts list will see the PF244A referenced against all of them. Confirm your inlet valve series and your wall cavity depth before ordering, since VacuMaid uses more than one adapter size across its inlet range and a mismatched joint can look tight while still letting air bypass, which reads as weaker suction system-wide rather than only at that one inlet.

• Size: 1-1/4 inch, two-piece design
• Used behind: VacuMaid 1-1/4 inch WS629 series stainless inlet valves
• Pairs with: SF290 flanged metal back-up plate
• Wall depth: Fits a 2 inch wall
• Also built into: VacuMaid's PF240A tee, PF241A coupling and PF243A flanged ell

Verified against: VacuMaid fitting listing carrying the PF-244A