FGW-ROS-500 500LPH Panel-Mounted Reverse Osmosis System with Digital Control & High-Pressure Pump

Product Overview

The FGW-ROS-500 is a compact, panel-mounted reverse osmosis system engineered by FG Water Technologies for commercial and light industrial pure water production where floor space is limited and feedwater quality is relatively stable (tap water, TDS ≤1,000 ppm). It integrates pretreatment, high-pressure pumping, RO separation, and post-treatment mineralization into a single SS304 frame—without a separate multimedia pretreatment skid. The system is rated at 500 LPH (≈13,200 GPD) nominal permeate flow and delivers 97–99% salt rejection with a 60–75% recovery rate, reducing both raw water consumption and concentrate discharge.

The panel-mounted architecture places the digital controller, pressure gauges, and flow meters at eye level for quick operational checks. A Taiwan-made auto RO LED controller with permeate TDS monitoring provides reliable, low-maintenance automation, while the LEO EVPm2-7 high-pressure pump and 4040 membrane element form the core pressure-driven separation stage.

Key Features

1. Small Footprint, No Separate Pretreatment Skid.

The FGW-ROS-500 is designed for installation in space-constrained environments such as coffee houses, staff canteens, small bottling lines, and laboratory feed-water preparation. Pretreatment is integrated into the frame, eliminating the need for a separate media-filtration footprint.

2. Food-Grade PPR Piping and Odor-Free Fittings.

All low-pressure wetted piping and fittings on the feed and permeate sides use food-grade PPR, ensuring no taste or odor transfer and compliance with potable-water contact expectations.

3. Three-Stage 20″ Pretreatment.

The pretreatment train consists of a 20″ 5-micron PP sediment filter, a 20″ GAC (granular activated carbon) filter, and a 20″ CTO (carbon block) filter. This three-stage configuration protects the downstream RO membrane from particulates, residual chlorine, and organic foulants.

4. Taiwan-Made Auto RO LED Controller + Permeate TDS Monitor.

The control panel includes an automatic LED RO controller and a permeate TDS monitor sourced from Taiwan. The controller manages low-pressure/high-pressure protection, pretreatment lockout, tank level interface, auto restart, and startup/flush sequences, while the TDS monitor provides continuous permeate quality feedback without manual sampling.

5. Post-Treatment Mineralization for Alkaline Drinking Water.

A 20″ T33 coconut-shell carbon filter followed by a mineral stone filter improves taste and introduces beneficial minerals, yielding mildly alkaline product water suitable for direct drinking applications.

6. High Recovery Rate.

The system operates at 65–75% recovery, reducing raw-water draw and concentrate waste relative to lower-recovery RO designs of comparable capacity.

7. Corrosion-Resistant Construction.

The frame is SS304 stainless steel; high-pressure-side components include a stainless-steel or brass high-pressure pump, SS304 sanitary pressure vessels, glycerin-filled pressure gauges, and corrosion-resistant concentrate and recirculation throttling valves.

Technical Specifications

Core Configuration

Pretreatment & Post-Treatment Train

Feed Water Design Parameters

Standard Features

• SS304 or brass corrosion-resistant high-pressure pump

• 2.5″/4″ spiral-wound TFC membrane (single 4040 element in FGW-ROS-500)

• SS304 sanitary pressure vessel

• Heavy-duty 5-micron pretreatment sediment filter

• Pre/post filter and pump glycerin-filled gauges

• Corrosion-resistant SS concentrate and recirculation throttling valves

• Low-pressure and high-pressure switches

• Product, reject, and recirculation flow meters / water quality monitor

• Heavy-duty DIN UPVC piping

• Stable and corrosion-free SS304 frame

Available Optional Features

• Skid-mounted pre- and post-treatment extension (media filters, softeners, etc.)

• FRP (fiberglass-reinforced plastic) pressure vessels

• Stainless-steel sediment filter housing

• High-performance UV sterilizer / ozone generator

• Corrosion-free stainless steel, HDPE, or FRP storage tanks (feed, permeate, etc.)

• Pressurized storage system / chemical dosing system / CIP system

• Variable-frequency drive (VFD) / pH meter / ORP sensor / temperature detector / residual chlorine detector

• Mild steel with painted frame / caster wheels

• Additional customization available on request

Model & Capacity Reference (FGW-ROS Series)

The FGW-ROS-500 belongs to the FG Water Technologies compact commercial RO family. The broader series covers the following nominal capacities for reference:

The table above reflects the FG Water Technologies ROS-series capacity ladder. The FGW-ROS-500 is configured with a single 4040 membrane and LEO EVPm2-7 pump to deliver 500 LPH nominal permeate under the feed conditions specified in this document.

RO Control Panel Logic

• Low-pressure / high-pressure switch protections

• Pretreatment lockout and tank level controls

• Auto restart / startup flush / timed flush

• Indicator status lights (power, running, alarm, flush, low pressure, high pressure)

• Permeate TDS continuous display

Benefits

• Low-energy TFC membrane yields high flow per unit of applied pressure while maintaining product quality.

• Reject recycle (where configured) maximizes water recovery and minimizes concentrate waste.

• Simple system integration and flexible configuration—pretreatment, RO, and post-treatment are pre-piped and pre-wired on a single frame.

• Individually factory tested and preserved before shipment.

• Compact footprint saves valuable floor space compared with split pretreatment + RO arrangements.

• Quick delivery and easy installation—panel-mounted instrumentation reduces on-site commissioning time.

• 1-year limited warranty on the system.

Application Scenarios

Service & Support

• OEM labeling and configuration acceptable

• Discount available on first order

• 100% QC inspection before shipping

• 1-year guarantee period

• Field installation, commissioning, and training available

• Online technical support

• Best after-sale tracking service

About FG Water Technologies

FG Water Technologies (Wuxi Fenigal Science & Technology Co., Ltd.) designs and manufactures reverse osmosis, nanofiltration, ultrafiltration, EDI, and chemical dosing systems for residential, commercial, and industrial water treatment. The company supplies complete systems and component-level spare parts, with engineering support for feedwater-specific configuration and post-sale field service.