Everything You Should Know about Valves

Valves are an integral part of fluid control systems. They are used to regulate and control the flow of fluids, ensuring that fluids are delivered as needed in pipeline systems. Valves are found in a variety of industries including oil and gas, chemical power, water supply and drainage systems, as well as the pharmaceutical and food industries.

The Valve Components

Valve components, a diverse assembly of parts, each contribute significantly to the consistent performance of a valve.

The Valve Components

Valve Bonnet

The valve bonnet is positioned on top of the valve body and protects the internal components. It is usually sealed to the valve body and offers easy access for maintenance and repair.

The Valve Components

Valve Body

The body is the main housing of the valve, which is usually made of metal or plastic with sufficient strength and corrosion resistance. It holds the fluid by connecting the pipe system.

The Valve Components

Valve Trim

The trim is the working assembly of the valve, directly interacting with the fluid. It is composed of several parts:

Stem: The stem is the linkage between the valve’s operating handle and the internal mechanism.

Disc: The disc is the moving part of the valve that, when actuated by the stem, changes the flow path.

Seat: The seat refers to the surface or area where the valve disc makes contact to create a seal and control the flow of fluid or gas.

Packing: Packing, also known as gland packing, is the material that seals the gap between the

Different Types of  Valves

There are different types of valves, each designed for a particular use according to the application requirements. Here are a few commonly used valve types.

Different Types of Valves

Ball Valve

The ball valve controls the on and off of the fluid by rotating the ball. It has the characteristics of fast switching and tight sealing and is widely used in petroleum, chemical, natural gas, and water treatment.

Our ball valves are available in a variety of materials to match different fluid types and pressures, ensuring a perfect fit for your system requirements.

 

1PC Ball Valve

2PC Ball Valve

3PC Ball Valve

Different Types of Valves

Needle Valve

The needle valve has a long, tapered needle-like disc, which provides precise flow control. This valve type is ideal for applications requiring fine-tuned flow regulation, such as in laboratories or gas delivery systems.

Explore our needle valves, which are crafted for durability and long service life, even in the most demanding conditions.

 

Stainless Steel Needle Valve

Different Types of Valves

Gate Valve

A gate valve is operated by a sliding gate that moves vertically within the valve body. This movement either obstructs or clears the flow path. Gate valve offers a clear path for fluid when fully open, which are commonly found in water supply systems and sewage treatment plants.

Our gate valves are built to withstand high pressures and are available in various sizes to suit a wide range of applications.

 

Gate Valve

Flange Gate Valve

Different Types of Valves

Globe Valve

Globe valves feature a disc that moves perpendicular to the flow direction. The disc is attached to the valve stem and is raised or lowered to open or close the valve. With its good sealing capabilities, globe valves are often utilized for throttling and regulating flow in various systems.

Our globe valves are known for their tight shut-off and are suitable for a variety of fluid control applications.

 

Globe Valve

Brass Globe Valve

Different Types of Valves

Foot Valve

Foot valves are one type of check valve that are commonly installed at the bottom of a pump or pipeline. They prevent the backflow of fluids and maintain the prime in the pump. Foot valves are crucial in irrigation systems and water supply applications.

Our foot valves are constructed to resist corrosion and are ideal for water supply and irrigation systems.

 

Foot Valve

Wrapping Up

Valves are vital components in numerous industries, ensuring the efficient and controlled flow of fluids and gases. Understanding the essential components and different types of valves helps in selecting the right valve for a particular application.

When it comes to reliable and high-quality valves, Union Metal stands out as a reputable valve supplier whose products are known for their durability, precise control, and excellent sealing properties. With our extensive experience and commitment to excellence, we provide a wide range of valves to suit different industries and applications.