The Dirt Devil 8735-W is the purpose-built locking inlet reducer for the CV1500 RV Central Vacuum System. It bridges your central vacuum hose and fittings to the inlet valve and mounting plate, stepping down from a 2-inch inlet to a 1.66-inch hose connection with a positive locking engagement that eliminates suction loss at the fitting joint.
Loose or mismatched fittings are the most common cause of reduced suction in RV central vacuum systems. The 8735-W addresses this directly with a locking engagement that clicks securely into the inlet valve -- no tape, no adapters, no improvised fixes. Once locked, the fitting stays put and suction is fully preserved from the power unit through to the hose.
Made from durable PlastiFlex PVC, this reducer is built to handle the repeated connect-disconnect cycles of everyday RV use without cracking or losing its locking engagement. It is designed specifically to work with the part 4865 mounting plate -- the standard inlet valve mounting hardware in the CV1500 system.
Positive locking mechanism holds the reducer firmly in the inlet valve with no wobble or pull-out during use.
Reduces the 2-inch inlet port to the 1.66-inch hose connection standard used on CV1500 hose assemblies.
High-grade durable PVC resists cracking, maintains its shape, and holds locking tolerances through repeated use.
Smooth internal bore and airtight locking seat prevent suction bleed-off at the fitting junction.
The 8735-W is designed exclusively for the Dirt Devil CV1500 RV Central Vacuum System sold by HP Products. It is not a universal reducer -- the locking tab geometry is matched to the CV1500 inlet valve and the part 4865 mounting plate. If you are running a different central vacuum brand or a non-CV1500 HP Products unit, verify your inlet valve accepts the CV1500 locking profile before ordering.
Installation is straightforward and requires no tools for the reducer itself. The reducer inserts into the inlet valve opening on the mounting plate and twists or clicks to lock, depending on your specific inlet valve version. To remove, depress the release tab and pull the reducer straight out. No adhesives or hardware are needed.
In a stick-built home, a central vacuum inlet fitting is rarely disturbed. In an RV, the same fitting may be connected and disconnected dozens of times per season, and the rig's vibration and road shock add additional stress. A worn or cracked inlet reducer lets unfiltered air bypass the hose seal, reducing suction at the cleaning head and allowing fine dust to recirculate. Replacing a worn 8735-W is one of the lowest-cost, highest-impact maintenance steps for keeping a CV1500 system performing properly.