What Is Gate Valve and Why Do You Need It?

Jun 19, 2019 by

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When it comes to the functionality of a commercial, residential, or industrial structure, we want it to be fully functional. The building is expected not just to be aesthetically pleasing but can sustain the needs of every part of it. We have always been curious about what we see in a building and even more curious about things not in plain sight. Plumbing, electrical, and mechanical design for example. These are the components which make up the functionality of the spaces.

Introducing the XHVAL gate valve, what we have in mind are parts which control the flow of liquid or gas with designated temperature and pressure. We are informed with the common knowledge about how it works and how important is to make a structure function. To give you a broad idea about gate valves, we will provide distinct information about gate valves and how it works.

About Gate Valves

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Whether it is under or above ground, gate valves are widely used for a variety of applications involving certain types of liquid and gas. Gate valves are used to regulate and control the flow of either liquid or gas. They work as a switch to open or close access to the pipelines operated clockwise to open (CTO) or clockwise to close (CTO). When the main switch is rotated, the gate moves up or down (depending on the design), to perform an opening or closing operation.

Shutting off the fluid flow is what gate valves are designed for. They are composed of parts required to fully function like seat and disc, spindle, valve body, wheel, and gland. Gate valves work hand in hand to ensure the flow of water or gas is put to a full stop. They prevent uncontrolled demand of liquid or gas from the main source or the waste container causing malfunction.

Gate valves cater to different types of liquid like potable water, neutral liquids or wastewater. The temperature of the liquids should be maintained in between -20⁰ C and +70⁰ C with a maximum flow velocity of 4 m/s to 5 m/s. On the other hand, the gas flow is also accompanied restrictions aligned to every building’s requirement. The temperature of the gas should be maintained in between -20⁰ C and +60⁰ C. The maximum flow possible should run no higher than 20 m/s.

Gate Valves VS. Other Types of Valve

Gate valves in comparison to other types of valve are highly recommended for liquid flow control than gas flow control. They can work for both but it has its limitations when it comes to controlling the flow of gas. These valves respond slowly compared to the other valves for they require a number of turns to be fully opened or fully closed.

They are the type of valve which usually facilitates in structures involving petrochemical plants and refineries. The temperature requirement is relatively high but with relatively low demand for pressure. Gate valves are mostly utilized in plumbing operations unlike operations involving gas and oil production because of the high demand in pressure.

Advantages of Using Gate Valves

Using gate valves has its perks too especially when the switch is catering to large industrial spaces like factories. They provide efficient control over the whole structure’s sections of pipes. If you want a valve that is best at allowing and stopping the flow of liquid to the pipes, gate valves are considered the perfect choice. Consider it the most efficient and effective valve to use.

Full Open and Close Features

The operations of gate valves happen by rotating the wheel clockwise to open (CTO) or clockwise to close (CTO). Gate valves allow smooth transportation of materials without blockages to interrupt the flow. This feature is their best advantage. It is qualified to cater to thicker liquid materials leaving the passage unobstructed.

Ease in Control

The use of gate valves frees the maintenance from complex mechanisms and control over liquid and gas. They are easily switched on and off with the assurance that the flow is already put to a stop. It might require a bit of effort to rotate the wheel but it ensures that the flow is safely and securely stopped. In comparison to most valves, they are the easiest to control that even people who have basic knowledge about valves know how to.

Low Probability of Damage

When the gate valve is fully opened, the flow of material is unobstructed which frees the valve from intense pressure that can cause damage. Since gate valves are limited to full stop flow, it prevents damages to pipelines and the valve itself.

What is Rising and Non-Rising Stem Designed Gate Valves?

There are two types of stem design for gate valves, the rising and non-rising valves. They differ on how the valves open and close for the flow of materials. Here are facts about the two which will give you the idea on which is more suitable for the structure.

Rising Stem Design for Gate Valves

  • Suitable for above ground piping systems.
  • Fixed to the Gate Valve making it move upward and downward in unison with the gate’s composition.
  • It provides a visual manifestation of the positioning of the valve seeking for the stem to be greased.

Non-Rising Stem Design for Gate Valves

  • Non-rising stem design for gate valves is suitable for both above and underground piping systems.
  • They are threaded into the gate whenever the handwheel is rotated allowing the wedge to raise and lower inside the valve.
  • It provides a space-saving design considering that minimal vertical space is required.

Conclusion

Gate valves are ideally the switch of the piping lines. They play a significant part in allowing and stopping the materials from flowering through the pipes. Most companies prefer gate valves because they are easily maintained and controlled. Moreover, gate valves are also secured when it comes to controlling but it ensures the safety of the users of a structure.

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