DN15 1/2" Auto Fill Float Ball Valve – Water Level Control

$7.06 $8.46

DN15 1/2" Automatic Float Ball Valve – Adjustable Water Level Control

Keep any water tank, trough, or reservoir perfectly filled — automatically. This DN15 1/2" plastic float ball valve uses a proven hydraulic-mechanical design to open and close water flow based on the current water level, with zero electricity required. When the water drops, the float arm descends and opens the valve; when the desired level is reached, the rising float closes it again — preventing overflow and wasted water every time.

The 360° adjustable float arm lets you fine-tune the target water level without any tools, making installation fast and flexible for a wide range of tank sizes and configurations. Made in Mainland China from high-quality ABS plastic, it is lightweight yet durable and handles normal cold-water applications up to 60 °C and pressures up to 0.6 MPa.

Key Specifications

Thread Size: 1/2" (DN15) male thread, 20 mm outer diameter
Float Ball Size: 96 mm length × 39.5 mm diameter
Total Length: 198 mm
Material: High-quality ABS plastic
Color: Gray valve body + white float ball
Working Pressure: ≤ 0.6 MPa
Working Temperature: 0 – 60 °C (cold water only)
Operation: Fully mechanical — no electricity needed
Installation: Side-mounted / tank wall installation
Package Contents: 1 × Float Ball Valve

Where Can You Use It?

Household & commercial water tanks / water towers
Aquariums and fish ponds
RO (reverse osmosis) water systems
Livestock and poultry water troughs
Small water storage containers and cisterns

Why Choose This Float Valve?

✅ Electricity-free operation — works purely by hydraulics, saving energy
✅ Auto shut-off & anti-overflow — prevents spillage and water waste
✅ 360° adjustable arm — set the exact water level you need
✅ Universal 1/2" thread — fits most standard tank fittings
✅ Compact & lightweight — easy to install without professional help

Frequently Asked Questions

Q: Does the DN15 float ball valve require electricity or batteries to operate?

A: No. This float ball valve operates entirely on hydraulic-mechanical principles. The rising and falling of the float arm opens and closes the valve automatically — no electricity, batteries, or wiring needed whatsoever.

Q: Can I adjust the water level this valve fills to?

A: Yes. The float arm features a 360° adjustable design, allowing you to bend or reposition the arm to set the precise water level you want. No special tools are required for adjustment.

Q: What thread size does this valve use, and how do I install it?

A: The valve uses a standard 1/2" (DN15) male thread with a 20 mm outer diameter. It is designed for side-mounted / tank wall installation — simply drill or use the existing 1/2" port on your tank wall and thread the valve in securely. Use PTFE (thread seal) tape on the threads for a watertight connection.

Q: Is this float valve suitable for hot water systems?

A: This valve is designed for cold-water use only, with a maximum working temperature of 60 °C. It is not recommended for hot water or steam applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.