The AquaPurr Decorator starts with a decorator base unit that contains the electronics, and adds the black cache pot as a sleeve.  

The AquaPurr Decorator never needs cleaning because it does not recirculate water and instead the AquaPurr flows fresh water from the faucet.

You never clean or refill the AquaPurr.  There are no filters to buy either.

Your cat never drinks warm, stale, dirty water.

The Decorator series also features the flow control valve to adjust output from the spigot.