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        • Turbidity
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        • Chloride
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        • Sulfate
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      • Twin Sulfate Eater
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    • Equine Livestock Filters >
      • Agriculture Water Treatment
      • Irrigation
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  • RainDance H2O RO/DI-400 Water Purification Package

RainDance H2O RO/DI-400 Water Purification Package

SKU:
$4,998.00
$4,498.00
$4,498.00
On Sale
Unavailable
per item
ON SALE NOW - FREE DELIVERY!
The RainDance H2O RO/DI-400 Ultra Pure Water Package
400GPD Compact Reverse Osmosis System + DI
Experience ultra-pure water with our 400GPD system, designed for spot-free applications including car washes, auto detailing, laboratories, cosmetics manufacturing, fish aquariums, and more!

​
Save Big!
Use coupon code RODI300 at checkout to save an additional $300!
​Enjoy free delivery and a 5-year supply of prefilters with your purchase. Don’t miss out on this incredible deal!

Features:
  • Stainless Steel Showroom Quality: Compact wall-mount design for easy installation.
  • High Capacity: Treats high mineral/salt levels up to 2,500ppm TDS.
  • Energy Efficient: Commercial RO system with low energy consumption.
  • Easy Installation: Comes with color-coded RO tubing for hassle-free setup.
  • Advanced Filtration: Dual integrated sediment and chlorine/chloramine removal prefiltration.
  • Chemical Removal: Effectively removes Gen X and PFAS chemicals like PFOA & PFOS.
  • Post-DI Treatment: Ultra high purity water > 18 Megohm with replaceable mix bed cartridge.
  • Low Waste Technology: Achieves up to 50% recovery rate, minimizing wastewater.

Included in the Package:
  • Premium electronic RO control panel
  • Water totalizing meter (counts gallons used)
  • TDS water quality monitor
  • Comprehensive instructions & diagrams on pre-loaded flash drive
  • Lifetime support & water testing

​Upgrades:
  • Free Delivery: Enjoy free shipping within the continental US!
  • Free Service Kit: Keep your system running smoothly.
  • Free Replacement Filters: Regular maintenance made easy.
  • Free 24/7 Support: We're here whenever you need us.
  • Free RO Water Usage Meter: Track your usage effortlessly.
  • Free Water Quality Monitor: Ensure your water is always pure.

In Stock Now!
Don’t miss out on the RainDance advantage! Order your RainDance H2O RO/DI-400 Ultra Pure Water Package today and experience the difference in water quality for all your needs.​
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RO / DI From RainDance Water Systems
RO/DI Water Systems are perfect for cosmetics manufacturing, laboratory water, make up supplies, fish aquariums, manufacturing, car wash spot-free rinsing and washing, cooling loops, battery filling, hydrogen generation, fuel cell, misting and humidification applications, de-ionized water type II to make cosmetic items and much more. Water purified by reverse osmosis has had often greater than 95% of dissolved ions and 99% of most contaminants removed. When the purification of reverse osmosis is not enough, deionization filters can be added for ultra high purity water!
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Now Included: Easy Automatic RO Control Panel included with our TSM RO/DI Packages. Our integrated electronic controller offers automated control of several system functions and helps prolong the life of the RO motor and membrane, providing long-term and reliable operation. Built with superior engineering, this control panel eliminates confusing switches and lack of feedback provided by other generic RO systems.
RainDance H2O RO/DI-400 Package Premium Features & Specifications​
Built For Businesses That Require High Purity De-Ionized Water
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400GPD Wall Mount RO System Specifications
All 400GPD RO Systems include the following important quality features:
  • Premium Light Commercial 400GPD RO System 
  • RO Dimensions: 28"W x 8"D x 12"H - Total height with attached pretreatment 25"H.
  • Wall Mount Show Room Quality Stainless Steel Finish #4
  • Thin Film Composite Membrane
  • High Performance 3/4 HP Motors
  • Power 110v 60hz
  • Positive Displacement Rotary Vane Pump
  • Integral Hydraulic Manifold Assembly
  • Low Feed Pressure Cutout Switch
  • Tank Pressure Control Switch
  • Delrin Orifice or Teflon Tube Flow Control
  • Feed Inlet Solenoid Valve
  • SS Needle Valve Pressure Control
  • Product Tank Pressure Relief Valve​

  • RO Membrane Fast-Flush - Helps extend membrane life. This will provide a momentary high velocity flow across the membrane to help flush away any accumulated particles or debris.
  • ​Recirculation Valve - Provides high recovery / low waste 1:1 OR BETTER! Product/Waste Ratio
  • Note: RO/DI Package must be used with your existing pressure tank or storage tank or find tank and pump options below.  
  • Operating Parameters: Max TDS-2500ppm, Total iron is less than 0.3ppm, Manganese is less than 0.05ppm, Water hardness below 5 gpg. *Production rate is based on input water temperature of 25 C (77 F). If your water is colder production will be lower.
  • All RO Systems Wet Tested Before Shipping
  • Tech Support Included
  • All orders include a pre-loaded Flash Drive with installation instructions & equipment information​
  • Free Shipping/Delivery on all RainDance H2O RO/DI-400 Packages within the Continental USA. 
  • *Estimated Delivery: 2-3 Weeks *Holidays may affect delivery times
​The RainDance H2O RO/DI-400 Package includes the following equipment:
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Sediment & Chlorine/Organic Chemical Pretreatment System - Model # TFA-500-8 Stainless Steel Dual 2.5"x 10" Sediment and Carbon TSM Shelf Prefiltration System W/ Shutoff Valve. Provides RO protection from sediment, dirt, debris, chlorine, chlorination by-products, organic chemicals, herbicides, pesticides, insecticides, radon, benzene, and much more.
Pretreatment Equipment Dimensions: 
14”W x 8”D x 12.5”H ​​​
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Separate Post DI Treatment - Mix Bed High Purity Post DI Replaceable Cartridge: Ultra High Purity water > 18 Megohm Deionizer Mixed bed cartridges may be placed downstream of the RO unit, completing the purification process. (1) 4” x 20” Big Blue Deionization Cartridge mounted separately. Includes housing, bracket, wrench and (1) DI cartridge. 
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FREE Color Coded Installation Tubing
 - Perfect for the do-it-yourselfer or local plumber! RainDance is including color-coded tubing and easy quick-connect fittings for your RO system to make installation a breeze. Color tubing coordinates with the RO feed water (white), product water (blue), and drain water (yellow). Includes (3) sets of 20ft of flexible 1/2" tubing.
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​Water Totalizing Meter - Our reverse osmosis totalizing meter accurately displays how many gallons of water you are using, making it easier for you to monitor your daily water use and track how many gallons are running through the filters.
*Valid on orders placed after April 1, 2018
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Exclusive RainDance Preloaded Flash Drive - Installation has never been easier with our Preloaded RO Flash Drive! Includes essential information like detailed installation instructions, pictured diagrams, owner's manuals, Refer-A-Business gift card offers, and more!
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​​Package Includes: TDS Tester -
 Monitor your water before and after the RO/DI Water System. This portable waterproof tester offers high accuracy total dissolved solids (TDS) measurements in a single tester!
​
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​New For 2025: The last 2 years we have seen unprecedented parts shortages, out of stock items and long delays. To better serve our customers we are offering the following *5 year replacement package: 
  • 15 Carbon Prefilters - Designed to pretreat any chemicals such as chlorine, pesticides, insecticides & herbicides - Replace every *4 months
  • 15 Sediment Prefilter -  Designed to pretreat any sediment, sand and turbidity - Replace every *4 months​
*Some applications may require a more frequent replacement interval.
400GPD Reverse Osmosis System Specifications
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Storage Tank & Delivery Pump Options:

RDWS 300 Gallon Atmospheric Storage Tank

  • RainDance Water Systems Policies: I have read and agree to the Terms and Conditions
$1,849.00 $1,695.00
Add to Cart
RainDance Water Systems 300 Gallon Reverse Osmosis & Nanofiltration Storage Tank - Special Pricing when purchased with any of our Wall Mounted/Vertical RO systems or Portable/Stationary Nanofiltration systems.

Combine with the following systems: TSM-RO, TV-RO, TPC-Nano, TV-Nano. Find detailed information below.

300 Gallon Capacity - Dimensions: 34"D x 85"H *Appearance may vary.

Free Shipping Within the Continental US

RDWS 300 Gallon Atmospheric Storage Tank

  • RainDance Water Systems Policies: I have read and agree to the Terms and Conditions
$1,849.00 $1,695.00
Add to Cart
RainDance Water Systems 300 Gallon Reverse Osmosis & Nanofiltration Storage Tank - Special Pricing when purchased with any of our Wall Mounted/Vertical RO systems or Portable/Stationary Nanofiltration systems.

Combine with the following systems: TSM-RO, TV-RO, TPC-Nano, TV-Nano. Find detailed information below.

300 Gallon Capacity - Dimensions: 34"D x 85"H *Appearance may vary.

Free Shipping Within the Continental US

RDWS 500 Gallon Atmospheric Storage Tank

  • RainDance Water Systems Policies: I have read and agree to the Terms and Conditions
$2,295.00 $2,095.00
Add to Cart
RainDance Water Systems High Capacity 500 Gallon Reverse Osmosis & Nanofiltration Storage Tank - Special Packaged Pricing when purchased with any of our Wall Mounted/Vertical RO systems or Portable/Stationary Nanofiltration systems.

Combine with the following systems: TSM-RO, TV-RO, TPC-Nano, TV-Nano. Find detailed information below.

500 Gallon Capacity - Dimensions: 48"D x 82"H 
*Appearance may vary.

Free Shipping Within the Continental US

10gpm Repressurization Delivery Pump

  • RainDance Water Systems Policies: I have read and agree to the Terms and Conditions
$925.00 $795.00
Add to Cart
RainDance Water Systems Reverse Osmosis & Nanofiltration Delivery Pump - Special Pricing when purchased with any of our Wall Mounted/Vertical RO systems or Portable/Stationary Nanofiltration systems.

All-in-one booster pump draws water from the RO or Nano storage tank to deliver pressurized water to all taps. Only requires simple inlet/outlet installation!
  • Dimensions: 16"L x 7" W x 9"H
  • 1" Inlet/Outlet Ports
  • Power is 110v, 1-phase
  • 1 HP Motor
  • Output is 10 gpm at 48psi

Free Shipping Within the Continental US

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RainDance H2O RO/DI Package Selection Guide
  • RainDance H2O 400gpd RO DI Package 
  • RainDance H2O 800gpd RO DI Package
  • RainDance H2O 1200gpd RO DI Package
  • RainDance H2O 1500gpd RO DI Package​
Need Help Or Have A Question?
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read how you can benefit with a turn-key skid mounted reverse osmosis system

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Phone (USA)
: 1-877-788-8387   |   Phone (International): 760-788-8387
Office Hours: 9am-5pm PST - Monday through Friday
​After Hours Care: [email protected] 
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Main Company Website: www.raindancewatersystems.com
Headquartered in California, USA
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