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Installation precautions for globe valves

Introduction

 

A globe valve is an important component for the pipes of heating and cooling systems. In order to ensure that the pipe system operates smoothly, correct installation procedures are required.

 

1. Check the valve body and the surrounding environment before installation

 

Before installation, the shut-off valve should be checked, check the specifications, and identify any damage, especially to the stem. Also turn a few times to see if it is skewed because, during transportation, it is most likely to hit the stem. Also, remove the debris inside the valve.

 

The surface of the valve body should be inspected for cracks or other defects. This is especially important if it has been in use for a long time. You should also check to make sure all the parts are there and in good condition. Check the gasket surface very carefully; if it looks like it’s going to leak, replace it before installation.

 

For the line to which the shutoff valve is connected, be sure to clean it out. Compressed air can be used to blow away iron oxide chips, mud and sand, welding slag, and other debris. This debris, not only easy to bruises the sealing surface of the shut-off valve, which large particles of debris (such as welding slag), but also can block the small shut-off valve, so that it fails.

 

globe valve install1

 

2. If a pressure gauge is installed, it should be installed directly in front of the valve.

 

This is because that way you can see how much pressure your system has without having to look at the back of the valve where all its valves are located.

 

If you have a lot of valves installed in one place, this can be difficult because there will be so many valves that they may block one’s view of another. If they’re not blocking each other’s views, then there might not be any space left for an additional gauge because it would just add more clutter inside your equipment compartment or room.

 

3. Globe valves are generally installed upstream of control valves and downstream of filters, which is convenient for maintenance.

 

While it is possible to install a globe valve in any location, it is usually installed upstream of control valves and downstream of filters.

The advantage of this configuration is that it makes maintenance easier because the filter can be accessed without disconnecting anything else.

Additionally, if you ever need to replace or adjust your globe valve, you’ll have easy access to all its parts and components.

 

4. The valves used in the open and closed circuit of the steam pipeline shall be installed horizontally, and other valves shall be installed at an inclination of no more than 15°.

 

1)Before installation, check for cracks and other defects (such as deformation, corrosion, cracks, or discoloration) on joints; if there are any anomalies, stop installation immediately and contact your local manager for guidance or repair work.

 

2)After installation is complete, check for steam damage; if not repaired properly on time to avoid internal leakage!

 

globe valve install2

 

5. When installing, use a fixed base or flange connection to prevent damage to the valve stem thread.

 

1)When you install a globe valve, it’s important to consider how the valve will be connected to the pipe. A fixed base or flange connection with gaskets between them is recommended to prevent damage to the stem threads.

 

2)The stem thread is the part of the valve that connects it to the pipe. Damage to this area can lead to leaks and should be covered with a gasket before installing your globe valve.

 

3)When installing your new globe valves, make sure they’re properly compressed by using a diagonal pattern when tightening bolts around their perimeter (do one way, then turn them in an opposite direction). This will ensure that pressure on each side of the gasket is equalized for maximum durability and reliability over time.

 

6. Be careful not to use improper force when tightening bolts.

 

1)When installing a globe valve, be sure to tighten the bolts to their specified torque. Do not over-tighten or under-tighten them. Ensure that you do not damage the sealing surface of the gasket by using an incorrect tightening force.

 

2)Make sure that you apply an even force when tightening each bolt so that it is evenly seated in its hole and does not cause undue strain on any one area of metal (which could lead to cracking).

 

3)When tightening bolts, it should be carried out diagonally by several rounds in order to ensure uniform force at each flange joint.

 

4)Use a torque wrench to ensure that the bolt is tightened properly and doesn’t damage the valve stem thread. A torque wrench is used to prevent damage to the valve stem thread, which can lead to leakage when you turn on your water supply system because of insufficient tightening strength or improper installation methods.

 

7. The perforated flange of the globe valve shall be tightened with a gasket, and it will leak if there is no gasket.

 

1)When installing the globe valve, it needs to be installed on both ends of the pipe tightly with rubber or plastic washers (analogous to O-rings).

 

2)Usually, gaskets are made from rubber materials, which can withstand high-pressure resistance, and thermal expansion coefficient values are small (about 1%).3)

 

3)Gaskets are used to seal the flanges, and they can be damaged during installation or when they are used for a long time.

 

4)Gaskets should be replaced when they are damaged.

 

Conclusion

We hope that this article has given you a better understanding of how to install globe valves. If you have any questions, please feel free to contact us by email or phone at any time!

 


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