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Little Giant® Trough-O-Matic® | Stock Water Tank Float Valve | Watering Tank with Aluminum Housing and Expansion Brackets | Made in USA

  • Based on 549 reviews
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Availability: Only 7 left in stock, order soon!
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Arrives Thursday, Sep 3
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Style: Float Valve with Expansion Brackets


Features

  • Float Valve automatically controls water level for most plastic and metal stock tanks, troughs, barrels, and pans
  • Flows up to 245 gallons per hour, operates between 20 and 50 psi
  • Durable aluminum housing
  • Accepts a standard 3/4 inch garden hose
  • Also available in plastic housing (Item No. TM825, sold separately)

Description

If you thought you couldn't install automatic waterers in your barn, think again! This dependable, float-controlled model simply hooks up to a standard 3/4 inch garden hose to automatically deliver fresh water 24-7 in above-freezing temperatures. This dependable, all-purpose automatic waterer is easy to connect to pipe, flex hose, or garden hose water supply. Works well for horses, cattle, hogs, goats, and other outside animals, with no special training required. Not intended for use inside a home. Safely operates between 20 and 50 pounds per square inch pressure. Little Giant Trough-O-Matic Float Valves automatically control the water level for most plastic and metal stock tanks, troughs, barrels, and pans. Little Giant Trough-O-Matic Float Valves automatically control the water level for most plastic and metal stock tanks, troughs, barrels, and pans.

Material: Aluminum


Brand: Little Giant


Item dimensions L x W x H: 3 x 7.5 x 3.5 inches


Exterior Finish: Aluminum


Inlet Connection Size: 0.75 inches


Outlet Connection Type: Garden Hose Thread


Maximum Operating Pressure: 50 psi


Number of Ports: 2


Outlet Connection Size: 0.75 inches


Global Trade Identification Number: 10


Brand Name: Little Giant


Model Number: LG-TM830-PRNT


Global Trade Identification Number: 10


Unit Count: 1 Count


Manufacturer: Miller Manufacturing


Number of Items: 1


UPC: 084369083010


Included Components: Water tank float valve


Item Type Name: Float Valve


Item Weight: 1.8 pounds


Number of Pieces: 1


Manufacturer Part Number: TM830T


Exterior Finish: Aluminum


Outlet Connection Type: Garden Hose Thread


Maximum Pressure: 50 psi


Number of Ports: 2


Thread Size: 3/4 inch


Thread Type: Garden Hose Thread


Valve Type: Float Valve


Item Dimensions: 3 x 7.5 x 3.5 inches


Inlet Connection Size: 0.75 inches


Outlet Connection Size: 0.75 inches


Size: One Size


Material Type: Aluminum


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 3

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


  • Good so far
Style: Float Valve with Expansion Brackets
So far so good. Very sturdy.
Reviewed in the United States on August 2, 2026 by Candace Wilcox

  • Worth great.
Style: Float Valve with Expansion Brackets
These tank float valves are great. They are easy to put together and to install. The are very secure, bolted to the side of the tank.
Reviewed in the United States on June 4, 2026 by Joe

  • Here are the FACTS about this product!
Style: Float Valve with Expansion Brackets
I don't normally leave reviews, however, in this case I felt obligated to help because this product has the potential to be great. I was very happy with the quality of the product and it worked very well for me.... However - there are some very important things to note. 1) You must use a water pressure regulator if your current pressure is not appropriate. The product clearly states that it operates between 20-50 PSI. If you do not know what your water pressure is, just buy an RV regulator for $12. Most of them are 40-50 PSI. A water pressure tester is also about the same price, so just get the regulator and avoid the problem. If you add a regulator when it is not needed, it will be fine. If you do not add a regulator and your pressure is too high, this unit will not be able to stop the flow of water, and it will continue to run. 2) You cannot allow your hose to bend to the side, thus stressing the inlet/threaded portion of the housing. Over time, this type of stress will eventually destroy anything. If you cannot rig your hose from an overhead position, you will need to zip tie it, clamp it, or route it in such a way that it is coming straight down to the top of the housing (not pulling away from the inlet). You do not want your hose to be pulling or pushing with any resistance whatsoever. 3) Before installing, buy a set of quick connect couplers. You will need both male and female ends initially. If the side connected to the float housing corrodes, no big deal. Just buy another $3 male end coupler when you replace it and throw the old one away. I would not screw your hose directly to the float housing. Brass will corrode to aluminum. Brass will not corrode to brass. 4) If your pkg does not contain the rubber O-ring inside of the hose inlet, you will need to purchase one. Mine came with it, and I also purchased a pkg of replacements. I intend on replacing it as needed, like I do with all my hoses, etc.. A PM that will only cost you about $0.25/year. 5) If you have livestock, they will find a way to destroy everything in time. Either build a guard around your float, spigot & hose, or - do something to prevent the animals from reaching the hose or any mechanical components. I was able to place my tank directly under the spigot, so I just built a cabinet around my spigot, hose and float. Another option would be to keep the portion of the stock tank (where the float is connected) on the outside of the pen, fence or stall. Hopefully this helps and you will have the same success I had with it. I figure, if I have to replace it every year, no problem! Just think of the peace of mind you will get from around $50/year worth of parts. If it lasts any longer, I will consider it a bonus! Mike, from Ohio, signing out ; ) ... show more
Reviewed in the United States on June 28, 2024 by Michael Coyle

  • Clean water and easy install
Style: Float Valve with Expansion Brackets
This automatic valve is wonderful for our water trough for our sheep. It keeps a nice flow of clean and cool water. Easy install on the trough.
Reviewed in the United States on August 1, 2026 by Shea Ivy

  • Happy Buyer
Style: Float Valve with Expansion Brackets
Work great for my cattle. Durable and irks well. I will buy again for other tanks.
Reviewed in the United States on July 30, 2026 by Cami

  • Missing screw
Style: Float Valve with Expansion Brackets
I brought 3 automatic water Out of the 3 1package didnt have the screws
Reviewed in the United States on March 8, 2026 by Ami Bennett

  • Great
Style: Float Valve with Expansion Brackets
Great
Reviewed in the United States on August 11, 2026 by kimberly harac

  • Works exactly as needed
Style: Float Valve with Expansion Brackets
Works perfectly. No leaks. Easy to position.
Reviewed in the United States on July 20, 2026 by Diane Wilson

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