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Automatic Drain Valve from China Suppliers - Reliable Factory Design for Irrigation System Protection and Maintenance-Free Operation
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
What is the primary function of the RAIN LING Auto Drain Valve (VX75)?
The RAIN LING Auto Drain Valve (VX75) is designed to protect irrigation systems by automatically draining water from the pipes when system pressure drops below a safe threshold, preventing pipe damage and freezing issues.
Where should the VX75 Auto Drain Valve be installed?
It should be installed vertically at the lowest points of an irrigation line or near the sprinklers where water accumulation is most likely to occur.
What are the connection size and material specifications of the VX75?
The VX75 features a 1/2 in. MPT connection size and is constructed from durable Engineering Plastic, making it suitable for both residential and commercial irrigation networks.
What are the opening and closing pressures for this valve?
When installed vertically, the valve has an average opening pressure of 0.2 bar and an average closing pressure of 0.4 bar.
Does the VX75 Auto Drain Valve require manual operation?
No, the valve operates fully automatically without requiring any manual intervention, ensuring consistent reliability and system efficiency.





