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Aquatic Life

AquaticLife Auto Shut-Off Float Valve Kit for RO, RO/DI Reverse Osmosis System Units Water Filter Parts and Accessories

  • Based on 216 reviews
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Availability: In Stock.
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Arrives Thursday, Jun 4
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Features

  • AUTO-SHUT OFF FLOAT VALVE AquaticLife Float Valve Kit for RO and RO/DI units will allow your reverse osmosis system to automatically turn on and off. It includes the necessary RO auto shut-off valves and tubing.
  • FILL TANKS, CONTAINERS, AND AQUARIUMS This auto-fill float valve kit allows you to fill large tanks, containers, and aquariums automatically. Float fill valves are simple to install and can save a lot of water.
  • CONNECTS TO MOST RO & RO/DI UNITS The water float valve connects directly to existing RO and RO/DI units. The 14 Press Fittings work with standard reverse osmosis tubing.
  • KIT INCLUDES If youre using this kit with a reverse osmosis or RO/DI system, you WILL NOT need any other components. Kit includes an auto-shut off float valve, check valve, tubing, 12 FPT to Press-Fit adapter.
  • UNSURPASSED QUALITY AND SATISFACTION AquaticLife manufactures premium-quality products. Every product that goes out the door meets our highest quality and standards.

Description

AquaticLife Auto Shut-Off Float Valve, 1/4-Inch AquaticLife Auto Shut-Off Float Valve Kit for RO and RO/DI units will allow your reverse osmosis system to automatically turn on and off based on the activation of a float valve. This auto-fill float valve kit allows you to fill large tanks, containers, and aquariums automatically. Float valves are simple to install and can save a lot of water. The water fill float valve connects directly to faucets. The adjustable float is threaded with a ½" MPT connection and attaches to any standard reverse osmosis system that uses 1/4" tubing using the included ½” FPT to Press-Fit adapter. If you’re using this kit with a reverse osmosis or RO/DI system, you WILL NOT need any other components. This RO float valve kit includes the necessary RO auto shut-off valve, check valve and tubing. Minimum Operating Pressure: 40 PSI. Maximum Operating Pressure: 80 PSI. Unsurpassed Quality And Satisfaction AquaticLife manufactures premium-quality products. Every product that goes out the door meets our highest quality and standards.

Material: Plastic


Brand: Aquatic Life


Item dimensions L x W x H: 6 x 4 x 2 inches


Inlet Connection Size: 0.25 Inches


Inlet Connection Type: Press


Outlet Connection Type: Press


Maximum Operating Pressure: 80 Pound per Square Inch


Number of Ports: 2


Outlet Connection Size: 0.25 Inches


Global Trade Identification Number: 04


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 6 x 4 x 2 inches; 0.32 ounces


Item model number ‏ : ‎ 500300


Date First Available ‏ : ‎ January 21, 2014


Manufacturer ‏ : ‎ Aquatic Life


Best Sellers Rank: #38,163 in Pet Supplies (See Top 100 in Pet Supplies) #436 in Aquarium Filter Accessories


#436 in Aquarium Filter Accessories:


Customer Reviews: 4.5 4.5 out of 5 stars (375)


Inlet Connection Type: Press


Outlet Connection Type: Press


Maximum Pressure: 80 Pound per Square Inch


Number of Ports: 2


Smart Home Compatibility: Not Smart Home Compatible


Connector Type: Press


Valve Type: Float Valve


Item Dimensions: 6 x 4 x 2 inches


Inlet Connection Size: 0.25 Inches


Outlet Connection Size: 0.25 Inches


Size: 5 Piece set


Item Weight: 0.02 Pounds


Material Type: Plastic


Brand Name: Aquatic Life


Model Number: 500300


Global Trade Identification Number: 04


Manufacturer: Aquatic Life


Manufacturer Warranty Description: Manufacturer Warranty


UPC: 810957013004


Manufacturer Part Number: 500300


Number of Pieces: 5


Item Type Name: Multi, Model 500300


Unit Count: 1 Count


Included Components: Aquatic Life Automatic Shut-Off Float Valve Kit - .25"


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • exactly as advertised, works great
exactly as advertised, works great. Complete kit ready to install, if you’re looking to for a way to periodically fill your auto top off fresh water system this is a good setup. For best efficiency you want to run your RODI for a long time, instead of short bursts. Let the ATO tank get down to 1/4 full then turn on your RO/DI and walk away. This gives peace of mind your ATO tank won’t over flow. When its done turn off the RO/DI feed. ... show more
Reviewed in the United States on February 5, 2026 by Pitogo
    • Would recommend
After trying another brand ACV I went back to aquatic life. Solid, works as it should and for the parts you get well worth it
Reviewed in the United States on April 2, 2026 by Steven K.
    • So e z to use
Easy to install works perfectly that's what it's supposed to do
Reviewed in the United States on February 3, 2026 by Daryl Joseph Sr
    • Works great if you get all the pieces
This product works great, if you get all of the pieces. I say this because I did not realize I did not have all of the pieces for this until it was all hooked up and water was all over my kitchen floor. The product itself did what it was supposed to do. When the water level reached the configured cut off level the water stopped flowing into the reservoir. As soon as this happened the hose shot out of the float bulk head connection. It seems m package arrived with a couple of pieces missing as evidenced from the product picture. It was missing the little blue clip that locks the hose in and it looks like there was another piece that the blue clip would actually attach to. Other than that, I highly recommend this product. ... show more
Reviewed in the United States on December 10, 2022 by leo satterwhite
    • Hands down #1 thing anybody in reefing should have...
Ok so after about 7-8 years of reefing and always using an rodi system I've never had an auto shutoff, I've had floats that would stop the water and it would just keep going through the waste line down the drain. It turn I was changing filters more frequently. Also I know I'm not the only reefing who has flooded a room or rooms on their house due to forgetting your rodi is on 😂 it's not if your going to it's when your going to! Needless to say this float and shutoff are honestly top quality for your rodi system. It fills my bin up once the float shuts fully it builds pressure into a diaphragm inside of the shutoff which closes the feed line into your rodi. So no more just wasting filters and good water. It's cut my water bill down, buying less filters less frequently, 100% worth the money you'll spend because within 6 months you will be saving the same amount if not more on wasted water alone not including buying more filters. Again this is a hands down must in my opinion for reefing or anything your using an rodi system for to fill up a container that you may forget. No more overflowing or wasting water. Will be using these from now on as long as I use an rodi system. ... show more
Reviewed in the United States on July 21, 2023 by Lit Pix
    • Works exactly as planned
I use this in combination with an RO system and 100-gallon stock tank as a water reservoir for my aquariums when I need to do a water change. This float valve shuts off the RO system when the stock tank is full. This set is nice because it has everything I needed to have the auto-shutoff system and the components seem solid. Very pleased with the outcome. ... show more
Reviewed in the United States on January 25, 2024 by Wayne
    • Does a great job and is priced well
Why did I wait so long to buy this for my RODI setup. Installs easily, no leaks and all at a great price. No more water on my floors thanks to this purchase!
Reviewed in the United States on April 27, 2025 by Peter B
    • DO NOT use this for your RO unit. Flawed Design.
The unit appears to work: it slows the water inflow to a drip as the water line approaches to the set float level. But the problem is, RO units will continue to run and drain waste water even when it is producing drops of filtered water. The amount of waste water put to drain is the same regardless whether the RO unit is running at full speed or at a drip rate. Imagine how long it takes for the drip to fully reach the water level to fully stop the float valve; we're talking about hours of additional waste water each time we use it, or hundreds of gallons of water wasted. I'd imagine not a lot of people would notice this because waste water draining often is not visible since it is usually plumbed directly to a concealed drain line. For the sake of water conservation, the seller should really stop selling this product. Unaware users could be wasting hundreds or thousands of gallons of water each month. I bought two! Returning one; unfortunately the other one outside of return window. Glad I caught that little detail in time. Otherwise, I'll faint looking at my water bill at the end of the month! ... show more
Reviewed in the United States on June 21, 2024 by Sydney Yang

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