Auto Fill Mini Float Valve 1/2" – Automatic Water Level Control

Compact Inside/Outside-Mount Float Valve for Hands-Free Reservoir Refilling

💧 Always Free Shipping on All Products — No Hidden Costs!

Never hand-refill again. The Auto Fill Mini Float Valve 1/2" connects to a standard 1/2" water line (like a braided toilet refill line) and automatically maintains your water level so your mist maker keeps running smoothly. Its compact body mounts inside or outside the reservoir and has no external moving parts, so it won't interfere with your foggers. (Tip: use a 1/2" adapter to switch to whatever line size you need.)

✅ Why Choose the Auto Fill Mini Float Valve?

• Automated Water Refill – Keeps your reservoir topped up, preventing the low-water running that damages mist makers

• Compact Design – Ideal for small or space-constrained fogging systems

• Inside or Outside Mounting – Flexible installation to fit your setup

• No External Moving Parts – Won't snag or interfere with your foggers

• Durable ABS Construction – Wide working range, 10–150 psi

• Standard 1/2" Male Thread – Fits common supply lines; side input with fixed nut for a secure bulkhead connection

📦 What’s Included

• 1x Auto Fill Mini Float Valve 1/2"

• Free U.S. Shipping on all orders

📊 Product Specifications

• Material: ABS plastic

• Working Water Pressure: 10–150 psi

• Working Temperature: 0°C–60°C (32°F–140°F)

• Thread Size: 1/2" male (fits standard braided toilet refill lines)

• Water Flow Input: Side with fixed nut

⚠ Important Usage Notes

• Always install an emergency overflow when using any automatic float valve indoors, to prevent flooding if the valve ever malfunctions.

• Set the lowest flow rate needed to keep your reservoir full to avoid water waste.

• Perfect for fully automated, worry-free setups — home humidifiers, mushroom farms, grow tents, hydroponics, and more.

🔗 Pairs With

• Any House of Hydro Mist Maker Kit – keeps the reservoir full automatically

• Willhi Humidistat Controller – complete the hands-free, automated build

• DIY Humidifier Build Guide – see how to plumb in an auto-fill reservoir

⚠ Shipping Notes:

• ✅ Free Shipping within the USA on all products.

• 🌍 International customers: shipments outside the USA may incur customs fees, not included in the purchase price.