These pumps address different parts of an RO system. Aquatec's ERP permeate pump uses drain-stream hydraulic energy to move treated water into storage and reduce membrane backpressure. Its CDP electric booster raises membrane feed pressure. Establish the actual restriction or pressure problem first; the system manufacturer must approve the pump, controls and plumbing arrangement.
What does a permeate pump do?
A pump advertised for reverse osmosis is not automatically the right upgrade for a slowly filling tank. First identify the system and determine whether the problem concerns membrane feed conditions, water production or delivery from storage. A plugged filter or incorrect valve position can require a repair instead.
Aquatec's ERP500/ERP1000 description explains that these permeate pumps use hydraulic energy from the brine stream normally sent to the drain. They require no electrical power to drive the pump and move treated product water into the storage tank, reducing the membrane's backpressure.
This is a product-side function. Do not describe it as a device that simply raises the incoming household supply pressure. Maker-advertised efficiency or filling improvements also are not a guarantee for a particular home, membrane or existing fault.
What does an electric RO booster do?
Aquatec's CDP operational guidelines describe an electrically powered booster used on the feed side of the RO system, with associated power and control equipment. The 6800/8800 boost-system guide distinguishes the pump, transformer and tank-pressure shutoff switch.
That small RO booster is a separate selection from a whole-home water booster. Its power supply, pressure limits and controls must suit the actual RO configuration. Do not select it solely from a pump's appearance or a general household pressure target.
Can either pump be added to every system?
No universal retrofit instruction follows from this comparison. Aquatec's permeate-pump installation instructions specify named ports, orientation, the flow restrictor's position and particular hydraulic shutoff layouts. They direct the installer to consult the factory for manifold-type systems, another shutoff configuration or an arrangement that also uses an electric booster.
Removing a shutoff device is therefore not an automatic upgrade. The documented choice depends on configuration and withdrawal pattern. Preserve approved drainage and backflow protection rather than moving tubes according to a generic online diagram.
What should you establish before buying?
Record the RO model, membrane, existing controls and any recent filter changes. Separate a tank that is not filling from a full tank with poor faucet flow. Ask for measured feed and production findings, followed by a written compatible parts and controls plan.
Installation requires safe water isolation and depressurization under the actual instructions. Aquatec warns that switching off its electric pump does not stop forward flow while feed pressure remains, and assigns electrical wiring to qualified personnel. A powered-off motor is not a water shutoff. Have the approved installation checked for leaks and correct start/stop behavior before treating the upgrade as complete.