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Automatic Drain Valve for Irrigation - Reliable China Suppliers & Factory for Pipe Protection and Maintenance-Free Solutions
PRODUCT DESCRIPTION
RAIN LING Auto Drain Valve Series (VX75) is engineered to protect irrigation systems by automatically draining water from pipes when pressure falls below a safe threshold.
Installed at the lowest points of a line or near the sprinklers, this valve helps prevent water accumulation that can lead to pipe damage or freezing issues.
Its compact structure and durable materials make it suitable for both residential and commercial irrigation networks. The valve operates automatically — no manual intervention required — offering consistent reliability and system efficiency.
PRODUCT SPECIFICATIONS
| Item | Description |
| Model | VX75 |
| Connection Size | 1/2 in. MPT |
| Maximum Pressure | 8.5 bar |
| Maximum Flow | 0.23 m³/h |
| Average Opening Pressure (Vertical) | 0.2 bar |
| Average Closing Pressure (Vertical) | 0.4 bar |
| Diameter | 3.0 cm |
| Height | 2.5 cm |
| Material | Engineering Plastic |
| Installation Position | Vertical (at pipe low points) |
Detail Display
Frequently Asked Questions
1. What is the primary function of the RAIN LING Auto Drain Valve (VX75)?
The VX75 Auto Drain Valve is designed to protect irrigation systems by automatically draining remaining water from pipes when the system pressure drops below a safe threshold.
2. Where should this auto drain valve be installed?
It should be installed vertically at the lowest points of the irrigation line or near the sprinklers to ensure effective water drainage and prevent freezing or pipe damage.
3. What are the opening and closing pressure specifications?
When installed vertically, the average opening pressure for the valve is 0.2 bar, and the average closing pressure is 0.4 bar.
4. What is the connection size and maximum pressure limit of the VX75?
The valve features a 1/2 in. MPT connection size and is rated for a maximum operating pressure of up to 8.5 bar.
5. What material is the valve made of, and is it suitable for commercial use?
Yes, it is constructed from durable Engineering Plastic, making it highly reliable and suitable for both residential and commercial irrigation networks.
6. Does the VX75 Auto Drain Valve require manual operation?
No, the valve operates fully automatically without requiring any manual intervention, ensuring consistent reliability and overall system efficiency.





