







Compact Stainless Steel Float Valve for Automatic Tank Fill Control | Thomler
Never Worry About Tank Levels Again
Tired of checking water tanks, worried about overflow disasters, or constantly refilling reservoirs by hand? This all-metal automatic fill valve handles the job for you—no batteries, no wiring, just simple physics. Built from commercial-grade stainless steel, it opens when your container runs low and shuts off instantly when full. Perfect for livestock troughs, rain barrels, irrigation tanks, and solar water heaters, it delivers worry-free operation in freezing winters and scorching summers alike. Install it in minutes, walk away, and let gravity and buoyancy do the work while you focus on what matters.

Why You Need This
- Self-Regulating Fill Mechanism: Opens and closes on its own based on water depth—no timers, no guesswork, no constant supervision required.
- Built to Last Decades: Precision-machined from rust-proof stainless steel that laughs at corrosion, scale deposits, and years of UV bombardment outdoors.
- Handles Serious Water Pressure: Rated for 10–150 PSI, so it works flawlessly whether you're running off municipal mains or a gravity-fed cistern.
- Extreme Temperature Survivor: Functions reliably from freezing 32°F all the way to boiling 212°F—ideal for unheated barns or solar thermal systems.
- Fits Tight Spaces: Compact 2–4 inch footprint slips into cramped animal waterers, aquaponics setups, and narrow-neck containers where bulky float assemblies won't go.
- Tool-Free Installation: Hand-tighten the threaded body into any standard opening for an instant, drip-proof seal—no plumber needed.
Engineered for Real-World Durability
Cheap plastic float valves crack in frost, melt in heat, and strip threads during setup—leaving you with floods and expensive repairs. This industrial-strength valve laughs at those failure modes. Its mirror-polished internal sealing surface repels sediment and algae, guaranteeing a crisp shutoff every cycle. Whether you're automating a greenhouse irrigation loop, safeguarding a rooftop rainwater catchment, or keeping a horse trough topped off around the clock, you get maintenance-free reliability season after season. We ship free across the United States, and you're covered by our 30-day satisfaction guarantee—install it, test it, and see the difference professional-grade hardware makes.
Free shipping across the United States — always, with no minimum order.
Every order is carefully packed and sent with Track & Trace, so you can follow your package every step of the way.
Order today? We ship the next business day.
Not completely happy? You have 30 days to return your purchase.
On top of that, we offer a 3-year warranty against manufacturing defects — your investment is in good hands.
Built for the outdoors
Made to handle sun, rain and wind.
Built to last
Tough materials made to endure.
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A note from our team
Shopping for your home shouldn't feel like a gamble.
Too many products look great online and disappoint when they arrive. That's why we only pick pieces we'd happily put in our own homes.
Not right for you? Send it back within 30 days, no hassle. And when you email us, a real person from our small team answers.
The Thomler Team
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