Installation and Operation Points: Common Misunderstandings and Solutions for Globe Valves

"Installation and Operation Points: Common Misunderstandings and Solutions for Globe Valves"

1、 Overview

Globe valves are widely used in pipeline systems, but there are some common misconceptions during installation and operation, which may lead to a decrease in valve performance or even damage. This article will introduce you to some common installation and operation errors of globe valves, and provide corresponding solutions.

2、 Common misconceptions and solutions

1. Misconception: Not considering the flow direction of the medium

Solution: Ensure that the installation direction of the shut-off valve is consistent with the flow direction of the medium. For globe valves, it is usually required that the medium enters from the upper part of the valve and flows out from the lower part. If the installation direction is incorrect, it may cause the valve to fail to open or close properly, increase flow resistance, and even cause valve damage.

2. Misconception: Ignoring valve alignment

Solution: When installing (globe valve), ensure that the valve inlet and outlet are aligned with the pipeline to avoid unnecessary pressure on the valve. If the valve is not installed correctly, it may cause the valve to be poorly sealed and leak.

3. Misconception: Failure to perform appropriate cleaning and protection

Solution: Before installation, thoroughly clean the inside of the valve and pipeline to ensure that there are no impurities such as dirt, rust, welding slag, etc. After installation, blind plates or other appropriate protective measures should be used to protect the valve from damage during pipeline blowing or cleaning.

4. Misconception: Manual operation without checking valves

Solution: Before officially putting into use, the valve should be manually operated to check if it is smooth and lightweight. If manual operation is difficult, check whether the valve stem, valve core, and other components are damaged or require lubrication.

5. Misconception: Neglecting the convenience of valve maintenance and replacement

Solution: When installing (globe valve), future maintenance and replacement needs should be considered. Ensure that the position and direction of the valve are easy for maintenance personnel to access and facilitate the replacement of valve components.

6. Misconception: Not conducting stress testing

Solution: After installation, a pressure test should be conducted to ensure that the valve can function properly under actual working pressure without leakage.

3、 Summary of installation and operation points

1. Ensure that the installation direction is consistent with the flow direction of the medium.

2. Ensure that the valve is aligned with the pipeline to avoid unnecessary pressure.

3. Thoroughly clean the inside of the valve and pipeline before installation.

4. Use blind plates and other protective measures after installation.

5. Manually check the smoothness of the valve.

6. Consider the convenience of future maintenance and replacement.

7. After installation, perform a pressure test.

By following these installation and operation points, common misunderstandings of globe valves can be effectively avoided, ensuring the normal operation and service life of the valve. I hope this guide is helpful to you.