DN50 & DN40 Water Flow Sensor — Accurate Flow Monitoring for Home DIY Systems
Managing your home's water systems shouldn't require a plumber on speed dial. Whether you're dealing with inconsistent irrigation, uncertain hot water circulation, or simply want to understand your household water usage, a reliable flow sensor makes all the difference. HomeDIYer's DN50 and DN40 water flow sensors are hardware accessories carefully crafted for home DIY enthusiasts — giving you real data, right where you need it.
Available in two pipe diameter options — DN50 (1.5 inch) and DN40 (2 inch) — these sensors are constructed from high-quality nylon materials with good corrosion resistance and long-term stability. Each unit is compact and lightweight (typically 150–200 g), designed to fit standard threaded pipe connections without special tooling.
From monitoring your home water supply pipeline to controlling irrigation volume in a backyard garden, or ensuring steady flow in a hot water circulation loop, these sensors deliver the accurate, actionable data your DIY project depends on.
✅ Compatible with DN50 (1.5 inch) and DN40 (2 inch) pipe systems — suitable for household water supply, garden irrigation, and hot water circulation applications.
Key Features
- 🔄 Dual Pipe Diameter Adaptation: DN50 and DN40 are both available, meeting the water flow measurement needs of different pipe diameters with a wide range of applications.
- 📊 Accurate Measurement: Using advanced sensing technology, it can accurately measure the speed and flow of water and provide users with precise, reliable data.
- 🛡️ Durable and Reliable: Made of high-quality materials with good corrosion resistance and stability — built to work consistently over the long term.
- 🔧 Convenient Installation: Simple design with a straightforward installation process. Even DIY enthusiasts without professional skills can easily complete the setup.
- 💧 Versatile Application: Suitable for home water supply systems, garden irrigation, hot water circulation, and other residential water management scenarios.
- ⚙️ Directional Flow Design: Sensor body is marked with flow direction — simply align with your pipe's water flow for correct, consistent readings.
Who Is This For
🏠 Home Water Supply Monitoring
Install in your home water supply pipeline for real-time monitoring of water flow. Helps you understand household water usage and achieve more efficient, responsible water management.
🌱 Garden & Irrigation Systems
In the irrigation system of home gardens or small farmlands, accurately control irrigation water volume, improve irrigation efficiency, and avoid wasting water resources.
🚿 Hot Water Circulation Systems
Monitor the water flow of your hot water circulation system to ensure normal operation and guarantee the stability of hot water supply throughout your home.
🔨 DIY Plumbing Projects
Perfect for hobbyists and hands-on homeowners building or upgrading their own water management systems — no specialist tools or professional plumbing experience required.
Technical Specifications
| Available Models |
DN50 (1.5 inch), DN40 (2 inch) |
| Material |
High-quality nylon (corrosion-resistant) |
| Weight (DN50) |
150 g (approx. 5.3 oz) |
| Weight (DN40) |
200 g (approx. 7.1 oz) |
| Connection Type |
Threaded pipe fitting |
| Flow Direction |
Marked on sensor body |
| Application |
Water supply, irrigation, hot water circulation |
| Installation |
DIY-friendly, no specialist tools required |
| Compatibility |
Standard DN50 / DN40 pipe systems |
| Package Contents |
1 × Water Flow Sensor (model as selected) |
Frequently Asked Questions
What is the difference between the DN50 and DN40 models?
The DN50 model fits 1.5-inch pipe systems, while the DN40 model fits 2-inch pipe systems. Please measure your existing pipe diameter before ordering to select the correct variant.
Do I need professional plumbing skills to install this sensor?
No. The sensor is designed for DIY installation. The process involves turning off the water source, connecting the sensor to the pipe using standard fittings, and ensuring the flow direction arrow aligns with your water flow. A wrench is typically all you need.
How do I read the flow data from the sensor?
The sensor outputs a signal that can be read by connecting it to a compatible display device or control system. Refer to your display or controller's documentation for wiring and setup instructions.
Is this sensor suitable for outdoor use?
The sensor is made from corrosion-resistant nylon and is generally suitable for outdoor irrigation and garden applications. For prolonged outdoor exposure in harsh conditions, we recommend protecting the sensor from direct UV and extreme temperatures.
How do I maintain the sensor over time?
Regularly check the connection points for any signs of leakage and clean the sensor surface to ensure accurate readings. If the sensor will not be used for an extended period, turn off the water source to protect the equipment.
What should I do if the sensor readings seem inaccurate?
First, verify that the flow direction arrow on the sensor body matches the actual direction of water flow in your pipe. Also check that all connections are tight and leak-free. If issues persist, contact our support team for assistance.
Can this sensor be used with hot water systems?
Yes. The sensor is suitable for hot water circulation systems. It helps monitor flow to ensure the system operates normally and maintains a stable hot water supply. Check the operating temperature range for your specific application if water temperatures are very high.
Ready to take control of your water systems? Select your pipe size above and add the DN50 or DN40 Water Flow Sensor to your cart today — accurate monitoring, simple installation, built for DIY.
