Name: RainFlo 5100-IG Rainwater Collection System
Brand: RainFlo
SKU: RF-5100IG-125-230-340037-SH
Price: 13749.99 USD
Availability: InStock

RainFlo 5100-IG Rainwater Collection System

RainFlo 5100-IG Rainwater Collection System

by RainFlo

SKU RF-5100IG-125-230-340037-SH

Save $1,873.01

$15,623.00

$15,623.00 - $15,623.00

$15,623.00

$13,749.99

$13,749.99 - $13,749.99

$13,749.99

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Product Description

Managing large water needs shouldn’t mean managing a dozen suppliers. The RainFlo 5100-IG is a complete, high-capacity in-ground rainwater harvesting system built to simplify your setup, boost your efficiency, and handle serious demand without the complexity.

Whether you're running an estate, farm, or light commercial operation, this system gives you massive water storage and smooth performance in one turnkey package.
Every component has been carefully selected and perfectly matched for optimal performance, so there’s no risk of mismatched fittings, pump issues, or filtration headaches.

With one primary tank and two sealed extensions, the RainFlo 5100-IG gives you over 5,000 gallons of ready-to-use rainwater storage without you having to source a single extra part.
It’s not just smart, it’s sustainable. You’ll lower your water bills, protect your land from stormwater damage, and take a meaningful step toward eco-friendly, self-reliant water use.

If you're serious about performance, reliability, and keeping control of your water this is the system that delivers.

The Tank Guaranteed Not to Collapse When Empty*
* When installed in compliance with manufacturer's installation instructions

15 Year manufacturer's warranty

System Includes:

	The Graf 1700 Gallon Carat Tank - Graf Carat-S 1700 Gallon Underground Cistern with Pedestrian Manway, 14" Height Telescopic Riser and Childproof PE Lid. Unlike most cisterns, the Carat can be left empty without the risk of collapsing.
	(2) Graf 1700 Gallon Carat Extension Tanks - (2) Graf Carat-S 1700 Gallon Underground Cistern Extensions. The tank is completely sealed without an access opening. Used to expand your tank capacity more cost effectively.
	The Graf Optimax Pro Internal Filter Package - Internal self-cleaning cascade filter package. Includes filter, downpipe attachments, calming inlet, overflow siphon and Spannfix sleeve. Suitable for roof areas up to 3,750 sq. ft.
	The Graf Opticlean® Spray head - The Opticlean® cleaning unit provides 16 intense water jets for cleaning the Optimax® filter cartridge, keeping routine maintenance intervals to a minimum.
	The RainFlo 1.25 Horsepower Submersible Pump - Heavy-duty, high performance 230V/60Hz 1.25 horsepower 3-stage submersible pump with 1.25" threaded inlet to easily accept a floating extractor. Produces up to 24 GPM and up to 78 PSI.
	The RainFlo 230V Automatic Pump Controller- Provides automatic multi-function control for your water pump.
	The RainFlo 1.25" Floating Extractor - The floating extractor consists of an air-filled ball which suspends the floating inlet filter 4" below the water's surface where the cleanest and most oxygenated water resides.
	The RainFlo Pump Connection Kit - with MPT to hose barb adapter and marine-grade stainless steel hose clamp to connect the RainMaster pump to the floating extractor.
	Bulkhead Fittings - (3) 2" bulkhead fittings are supplied for connecting the three tanks together at the bottom so that they act as one large tank. (2) 2" bulkhead fittings are supplied for connecting the vent caps to allow air into the extension tanks. (1) 1.25" bulkhead fitting is supplied for the penetration required to run your pump discharge line out to your irrigation system or home.
	(2) 2" Vent Cap - Allows air to enter and escape from the extension tanks to allow water to fill the tanks.
	Multi-Tite sealing gaskets - (3) 2" Multi-Tite gaskets used to produce a watertight seal around the upper air balancing lines. (3) 4" Multi-Tite piping gaskets used to create a watertight seal with any penetrating piping.

PLEASE NOTE: Additional 3” or 4" PVC parts to connect the leaf eater to the first flush and the first flush to the inlet are required, but not included.

Vehicle Loading Option

Includes heavy duty telescopic dome shaft and cast iron lid for vehicle loading up to a maximum axle loading of 2.2 tons.

Returns Policy

If you are not satisfied with your purchase, please send an email to support@thefountaindirect.com or call us to request a Return Material Authorization (subject to manufacturer approval) prior to returning any merchandise. Requests for returns on standard, non-special-order items may be made within 30 days of the item's ship date.

In order to provide our customers the highest quality products at the lowest possible prices, we only accept returned merchandise in "factory new” condition. We must be able to resell the product as new in the condition it is returned to us.

How to Assemble a Carat Tank Video:

Downloads

RainFlo-1700-IG.pdf

RainFlo-1700IG-brochure-web.pdf

RainFlo-In-Ground-Systems-Installation-Maintenance-Manual.pdf

RainFlo-1700-IG-Complete-Rainwater-Harvesting-System-Submittal.pdf

RainFlo-1700-IG-Spec.rtf

Can I use this water for drinking?

Not with the standard setup. However, if you need potable water, we can offer an additional filtration and disinfection system to make the rainwater safe for drinking. Let us know your needs, and we’ll guide you through the right upgrade.

Does the system include everything I need to get started?

Yes, it comes complete with the tank, pump, filter, controller, fittings, and all core components needed for a turnkey setup.

Can I use this system for indoor plumbing, like toilets or laundry?

Yes, the system is fully compatible with indoor non-potable uses like toilet flushing and laundry when installed with the proper connections.

How do I know what tank size I need for my home or garden?

A simple way to estimate the right tank size is by calculating how much rainwater your roof can collect. Multiply your roof’s surface area (in square feet) by your average annual rainfall (in inches), then multiply by 0.62, this gives you the total gallons you could collect in a year. For example, a 1,000 sq ft roof with 30 inches of rainfall can collect around 18,600 gallons annually. From there, we can help you choose the right tank size based on your water use and how much storage you want on hand, whether you're using it for irrigation, home use like toilets or laundry, or even potable water with the proper filtration upgrades.

Can I connect this to my irrigation system?

Yes, absolutely. Our complete rainwater harvesting systems are perfect for irrigation. You can easily connect the system to drip lines, sprinkler systems, or garden hoses to water lawns, landscaping, or vegetable gardens using filtered rainwater. It's an efficient and eco-friendly way to reduce your utility bills.

Can I expand the system later if I need more water capacity?

Absolutely. The system is modular, so you can add additional tanks, pumps, or components in the future.

What if it doesn’t rain enough in my area?

The system is efficient even in low rainfall zones, especially with a large roof area. You can also connect a backup water supply if needed.

I’ve never used a rainwater system before. Will I know how to manage it?

Yes. Once installed, the system is largely automatic. It includes a self-cleaning filter, automatic controller, and minimal maintenance requirements.

Is this system difficult to install?

We recommend professional installation through contractors or companies that specialize in rainwater system setups. However, the system comes with all core components and documentation to make the process smooth for any confident, skilled homeowner.

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