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Automatic Flushing 400 GPD RO System

Commercial 5-Stage Stand type RO System 400GPD Per Day ( With Pumps ) (Automatic Flushing Membrane) ( With automatic flush controller which can flush RO-film regularly)

The purpose of the flush system is to help prevent scaling or fouling of the RO membrane(s) by providing a rapid rinse which washes away impurities and keeps the membrane clean.The auto flush system noticeably increases the service life of the membranes in reverse osmosis systems.

Functions:

Indicate TDS.
Flush the RO System.
Turn Off RO on low Pressure.
Turn Off RO on High Pressure.
Control RO High Pressure Pump.

What the system is and what problem it solves?

The Automatic Flushing 400 GPD RO System is a commercial-grade, stand-type reverse osmosis unit designed for applications requiring a reliable supply of purified, low-TDS water. With a daily output of 400 gallons, it is suitable for offices, cafés, small industrial setups, and commercial water dispensing operations.

The system integrates an automatic flush controller that routinely rinses the RO membrane to remove scale-forming contaminants. This prevents fouling, extends membrane lifespan, and maintains stable purification performance over time.

Process Design & Operating Philosophy

Water passes through multiple pre-filtration stages before entering the RO membrane. The high-pressure pump drives water through the membrane, producing low-TDS permeate while rejecting dissolved solids.

The automatic flushing module periodically sends a rapid, high-flow rinse across the membrane surface. This reduces scaling and deposits, helping maintain consistent flow and delaying membrane replacement intervals.

Integrated pressure protection ensures safe operation by shutting off the system during abnormal low-pressure or high-pressure conditions.

Design Basis & Engineering Assumptions

Parameter	Design Basis
Nominal Capacity	400 GPD
Filtration Stages	5-stage RO system
Flush Control	Automatic membrane flushing
Pressure Protection	Low-pressure & high-pressure cut-off
Operating Voltage	Based on pump model used
System Type	Commercial stand-type RO with pump

Actual output varies with inlet pressure, temperature, and feedwater quality.

System Configuration

The 400 GPD Automatic Flushing RO System includes:

Filtration & Purification

5-micron sediment pre-filter
Granular activated carbon (GAC) filter
Carbon block filter
400 GPD thin-film composite RO membrane
Post-carbon polishing filter

Pumping & Controls

High-pressure RO pump
Automatic flush controller
Feed-pressure protection switch
High-pressure cut-off switch
TDS indication function
Auto shut-off on tank-full (if tank connected)

Stand-Type Structure

Floor-standing steel frame
Clear access to filters and pump
Integrated wiring and control panel

Performance Parameters

Parameter	Value
Rated Output	400 GPD
TDS Reduction	Based on membrane performance
Flush Mode	Automatic membrane rinse
Operating Mode	Continuous—controlled by pressure switches
Monitoring	TDS reading, pump status, pressure cut-offs

Performance varies depending on feedwater quality and operating pressure.

Pretreatment & Integration Requirements

Pretreatment may include:

Sediment filtration (included)
Carbon filtration (included)
Chlorine removal to protect RO membrane
Adequate inlet pressure—booster pump built-in
Optional antiscalant dosing in hard-water areas

The system integrates easily with storage tanks or distribution pumps.

Models

Brackish Water RO – Modular Product Range

Model Number	Permeate Flow (GPD)	Notes
UT-RO-400AF	400 GPD	Automatic flushing RO system with pump

Note: Custom configurations based on feedwater quality are available.

Features

Standard Features:

Automatic flush controller for membrane protection
Built-in high-pressure RO pump
5-stage commercial purification
TDS indication function
Automatic cut-off during low or high pressure
Floor-standing frame for easy servicing
Extended membrane lifespan through routine flushing
Stable output for continuous operation

Available Options:

UV disinfection
Alkaline or mineral post-filter
Larger carbon or sediment housings
External storage tank
Leak detection system
Additional sediment protection for turbid feedwater

Applications

Cafés and small restaurants
Offices and commercial buildings
Small-scale bottling operations
Laboratory and equipment feed water
Water dispensers and refill points
Any site requiring consistent 400 GPD RO purification

System Components

Certified Parts. Proven Performance.

We use certified components sourced from trusted global manufacturers to ensure system durability, operational stability, and regulatory compliance. From membranes and pumps to control panels and filtration media, every part is selected to support long-term performance and ease of maintenance.