As you all know, valves are used to regulate, stop or start the flow of a fluid or any gaseous applications. Different types of valve are available, which include Ball valve, Butterfly valve, Globe valve, Plug valve, piston valve and many more.
Have you heard about Globe valve? It is a linear motion valve which can be used to regulate the flow of any kind of fluids. This regulation is made by changing the distance between a movable disc and a stationary seat. During the process of opening and closing the disc moves perpendicularly to the stationery seat. Thus this valve can close or open the flow path completely. You can use this valve in any chemical plant, sewage pipeline system, oil and gas pipeline system and many more.
NTGD Industrial valve is a company that offers all these different kinds of valves at a reasonable price. From Ball valves to forge valves are available with them. With the highly sophisticated UK design and quality control system, they make sure that the products are with very high quality in accordance with API, ASME, ANSI and DIN. They have a team of experts specialized in valve manufacturing.
Different types of disks used in the globe valve
Different types of disks are used in of glove valve. This include
- Needle type
- Composition type
Ball-type disk arranged globe valve are used in low-pressure systems. Usually, this is used to just start and stop the flow of the fluid.
Needle type disk arrangement offers more throttling as compared with ball type and composition type. So it is more useful with systems that need different flow conditions.
Composition disk arrangement has a better shutoff property. A hard insert ring is used to stop the flow completely without any leakage.
Types of glove valve
Depending on the body design of the globe valve, mainly three types of globe valves are available in the market.
- Z body or Tee pattern
- Angle type
- Y body
Z body or Tee pattern
Z body or Tee pattern globe valve design is one of the most commonly used type. In this, the valve contains a Z shaped diaphragm. In this, the seat is placed horizontally which allows the stem to move perpendicular to the seat. But this results in a high-pressure loss. So this type of valve is used in systems where pressure drop is not a problem, and just high throttling is needed.
This type of globe valve is similar to the basic tee pattern valve. The only difference is that the end of the valve is placed at 90 degrees tilted, which allows the fluid flow only with a single 90-degree turn. This is used in systems with the fluctuating flow.
This kind of valve solves the problem of the high-pressure drop with Z body valves. In these valves, the seat and stem are placed with around 45 degrees to the axis of the pipe. This is used with systems where pressure drop is concerned.
Based on Body and bonnet
Second categories of globe valves are available based on the connection within the body and the bonnet. This include
- Screwed bonnet
- Welded bonnet
- Bolted bonnet
- Pressure-seal bonnet
Screwed bonnet is the simplest kind of globe valve available, and it is mostly used in inexpensive systems.
The welded bonnet is the most commonly used kind of globe valve. This valve is also light in weight.
Bolted bonnet is also one of the popular kinds of globe valve. In this Body and bonnet is sealed using a gasket.
Pressure seal is used in applications with high pressure and high-temperature fluid flow.
How to purchase the globe valve
Before purchasing a globe valve, there are so many factors that you need to consider.
- Types of media
The type of material passing through the pipe where the globe valve is placed has to be considered. This is one of the most important factors that you need to consider before buying a globe valve. In some cases, the fluid will be highly corrosive or will be chemically neutral. This will affect the valve. So it is important that you consider the type of material and choose a valve that is suitable for your requirement.
Globe valves are available in different prices. So it will be better to compare the prices of different manufactures before settling with one of them. NTGD offers different kinds of valves at a reasonable price.
Check whether the valve that you are purchasing suits with the system. Mode of installation and the assembly of the valve has to be considered.
So these are all these things that you need to know about Globe valve. Hope this articles will help you know more about globe valve and will make you purchase the best one suitable for your needs.