Weidouli Valves Co.,Ltd.

Mastering Control: How to Operate and Maintain Manual Hand Valves

Manual hand valves are ubiquitous in various industries, offering a straightforward and reliable means of controlling fluid flow. These valves are operated by hand, allowing operators to adjust flow rates and pressure levels with precision. To ensure the efficient and safe operation of manual hand valves, it's essential to master their operation and follow proper maintenance practices. In this blog, we'll explore the key aspects of operating and maintaining manual hand valves.

Understanding Manual Hand Valves

Before delving into their operation and maintenance, it's crucial to understand the basics of manual hand valves. These valves come in various designs, including ball valves, gate valves, globe valves, and more. The primary feature that sets them apart is the manual handwheel or lever used to control the flow by rotating the valve stem or disc.

Operating Manual Hand Valves

Mastering the operation of manual hand valves involves a few key steps:

Position the Valve

Determine the current position of the valve, whether it's fully open, partially open, or closed. This knowledge helps you make the necessary adjustments.

Turning the Handwheel or Lever

To increase or decrease flow, turn the handwheel or lever in the desired direction. Clockwise usually closes the valve (reducing flow), while counterclockwise opens it (increasing flow). Be gentle with your movements, especially when approaching the desired position.

Monitor the Flow

As you adjust the valve, pay attention to the flow rate and pressure to ensure it meets your requirements. Slow and deliberate movements allow for precise control.

Maintaining Manual Hand Valves

Proper maintenance is vital to keep manual hand valves in optimal working condition. Here's how to maintain them effectively:

Regular Inspection

Periodically inspect the valve for signs of wear, leakage, or corrosion. If you notice any issues, address them promptly to prevent further damage.


Apply the appropriate lubricant to the valve stem or moving parts to reduce friction and ensure smooth operation. Consult the manufacturer's guidelines for the right lubricant to use.

Leak Testing

Conduct leak tests to confirm that the valve closes tightly and doesn't allow backflow. Address any leaks promptly to maintain safety and prevent fluid loss.

Record Keeping

Maintain detailed records of maintenance activities, inspections, and any adjustments made. This documentation helps track the valve's performance over time and assists in scheduling future maintenance.

Mastering the operation and maintenance of manual hand valves is essential for achieving precise control and ensuring the longevity of these vital components. By understanding their basic operation, monitoring flow rates, and adhering to proper maintenance practices, you can make the most of manual hand valves in your industrial processes while maintaining safety and reliability.

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No.20, Xingyu Road, Airport Industrial Zone, Wenzhou city, 325024 P.R.