Ball Valve | NTVAL

Trusted Ball Valve Manufacturer

NTVAL offers durable Ball Valves for various industrial uses, known for excellent sealing and long-lasting performance. Our valves ensure efficient operation in tough environments, delivering quality products at competitive prices for dependable service.

Reliable Ball Value

Quality Control

The PMI test checks if the ball valve is made from the correct metal. This prevents using the wrong metal, which can affect how well the valve works.

PMI Test

In the sealing test, we check if the ball valve can stop leaks. By using air or water pressure, the test shows if the valve tightly shuts off the flow.

Sealing Test

This test makes sure the ball valve releases little to no harmful gases. The valve is placed under pressure, and sensors monitor if gases escape from any part of the valve.

Low Emission Test

The impact test checks how tough the ball valve is by hitting it with force. The goal is to see if it cracks or bends. The valve must stay strong and work correctly, even if it faces hard hits.

Impact Test

Dimension inspection checks if every part of the ball valve matches the size required by the design. Correct sizes make sure the valve fits perfectly into the system.

Dimension Inspection

The painting thickness test measures the layers of paint on the ball valve. This makes sure the valve is properly protected from rust or damage.

Painting Thickness Test

The PT test looks for tiny cracks on the ball valve’s surface using a special liquid. The liquid highlights any hidden flaws that could weaken the valve over time.

PT

Material inspection checks the ball valve’s materials to confirm they meet the standards set in the design. This step looks for any impurities or weaknesses in the metal.

Material Inspection

Our Valve Applications in Key Industries

Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.

Ball valves safely control harsh chemicals, prevent leaks, and provide reliable performance, making them essential for chemical processing.

Chemical Processing

Ball valves withstand high-pressure fluids like oil and gas, offering long-lasting, corrosion-resistant flow control in petrochemical applications.

Petrol Chemical

In nuclear industries, ball valves offer reliable performance under extreme pressure and temperature, establishing safety and precise flow control.

O.P.G & Nuclear

Ball valves manage thick liquids like wood pulp smoothly, preventing clogs and keeping pulp production efficient and uninterrupted.

Pulp

In mining, ball valves endure abrasive materials and high pressures, providing long-lasting durability for efficient underground operations.

Mining

Ball valves manage water flow and waste, preventing leaks and maintaining reliable control in water and sewage systems.

Water & Sewage

Ball valves control high-temperature steam flow, offering durability and precise management in industrial heating and steam applications.

Steam System

Ball valves regulate hot water flow, establishing safe and efficient operation in boiling systems, preventing overheating or malfunctions.

Boiling System

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Advantages of Ball Valves

Minimal Pressure Drop

Ball valves do not require a powerful pump to move fluids or gases, leading to minimal pressure changes from high to low. This helps maintain the smooth operation of the pipe components.

Stemless Design

The valve operates without a stem that moves up or down, preventing gas or liquid from escaping when the valve is either shut off or turned on.

Ease of Operation

A simple 90-degree turn is all it takes to open or close the valve.

Cost-Effective

Ball valves are affordable and durable, with a wide range of design options available.

Versatile

These valves are capable of handling high pressures and temperatures, withstanding up to 700 bars and 200°C.

Easy to Repair

Thanks to their simple design, especially the top-entry style, ball valves are easier to fix and assemble compared to other valve types.

How Do Ball Valves Work?

Ball valves are designed with two or more ports, depending on the application. A common type is the two-way valve, which is often bidirectional. In this design, there are two seats—one for upflow and one for downflow. Some ball valves are built to allow flow in multiple directions, offering flexibility for various systems while maintaining cost-effectiveness.

The operation of a ball valve is straightforward. A quarter turn opens the valve, allowing flow through the ports. To close and seal the pipe, another quarter turn is made, depending on the specific shut-off design. For a deeper understanding of how ball valves function, additional details are available in our blog.

What Are Ball Valves Used For?

Ball valves are commonly used in industrial applications that require protection from leaks, particularly in systems that need a tight shutoff.

They are ideal for handling liquids or gases, making them suitable for industries such as natural gas, chemical storage, and those dealing with corrosive fluids. However, ball valves are not well-suited for applications involving slurries.

How Are Ball Valves Made

Ball Valve Body

The body is the framework of the valve that holds all the components together. It connects to the pipes within the system and can consist of one, two, or three pieces.

Ball Valve Actuator

Located outside the valve body, the actuator is responsible for opening or closing the valve. This can be done manually or automatically, depending on the system.

Ball Valve Ball

The ball is a hollow sphere positioned at the center of the valve. When rotated, it either permits or blocks the flow of media through the valve.

Ball Valve Stem

The stem is a shaft that connects the internal ball to the handle or actuator. It transfers the quarter-turn force from the actuator to the ball, allowing the valve to open or close.

Ball Valves Designs: Factors to Consider

Ball Valves By Valve Opening

Ball valve designs can be classified based on the relationship between the valve size and the pipe size:

Full Port Ball Valve

In a full port ball valve, the internal diameter of the valve matches the internal diameter of the attached pipe. This design minimizes friction and does not restrict fluid flow, making it ideal for use in refining and petrochemical industries. Although it offers excellent performance, it is generally more expensive to install.

Reduced Port Ball Valve

Also known as a standard port or reduced bore valve, the reduced port ball valve has an internal diameter smaller than that of the pipe it is attached to. This type is commonly used in gas and oil applications, where a smaller valve size is sufficient.

V-Port Ball Valve

The V-port ball valve, which can be obtained from specialized manufacturers like NTVAL, serves a dual purpose as both a ball valve and a control valve. It features either a V-shaped ball or seat, allowing for more uniform media flow. This design results in a lower pressure drop compared to full and reduced port valves, making it suitable for applications requiring precise flow control.

Supply Ball Valves By Number of Pieces

One-Piece Ball Valve

As a supplier of one-piece ball valves, we offer the most cost-effective option. These valves are either welded or forged into a single piece. However, this design has a limitation: it cannot be disassembled for cleaning or replacement.

Two-Piece Ball Valve

As the name suggests, a two-piece ball valve consists of two parts connected by a thread. For internal cleaning or replacement, the valve must be removed from the pipeline.

Three-Piece Ball Valve

NTVAL, a leading manufacturer of three-piece ball valves, designs these valves with bolt connections that hold the three-piece housing together. This design allows for cleaning, inspection, or disassembly without the need to remove the entire valve from the pipeline.

Ball Valve By Ball Movement

Trunnion Mounted Ball Valve

NTVAL, a trusted manufacturer of trunnion ball valves, offers designs with an additional anchor point on the top, bottom, or both sides of the ball. This anchoring helps to offset valve torque and reduce friction caused by high-pressure flow through the pipes.

In double trunnion ball valves, the ball is anchored both at the top and bottom. The bottom trunnion holds the ball in place, preventing it from floating, while the top trunnion controls the opening and closing of the valve.

Floating Ball Valve

As the name suggests, the ball in a floating ball valve is not fixed and is supported by two seats made of soft elastomeric material. This is the most common ball valve design. A stem connected to the top of the ball allows for the quarter-turn operation. The soft seats provide excellent leak tightness, and the floating design enables the valve to be shut off in a bi-directional manner.

Ball Valves By Body Arrangement

Ball valves are also classified based on their body arrangement, which can include split body, top entry, end entry, or three-piece designs.

Top entry Ball Valves allow access to valve internals for maintenance directly from the top. This design simplifies repairs as the valve does not need to be removed from the pipeline. It is particularly valuable in systems where valve maintenance must be straightforward and quick.

The split body ball valve features a design where the ball and other internal parts are enclosed within a smaller casing, which is secured by bolts. This design allows for easier access to internal components when disassembly is needed.

Rising Stem Ball Valves are operated with a stem that rises as the valve opens and lowers as it closes, providing a visual indication of the valve’s status. This feature is useful in industrial applications where direct monitoring of valve position is necessary.

Top Entry Ball Valve

Split Body Ball Valve

Rising Stem Ball Valve

Ball Valves By Material

PVC Ball Valve

Polyvinyl chloride (PVC) is commonly used for ball valves handling corrosive media, especially in low-pressure applications. However, PVC is not suitable when temperatures exceed 60°C.

Stainless Steel Ball Valve

NTVAL offers stainless steel ball valves, typically using 316-grade stainless steel for high-quality valves that can withstand highly corrosive materials. For applications requiring medium-quality valves, 314-grade stainless steel is often used.

Brass Ball Valve

Brass, a stable alloy, is one of the most common materials used for ball valve bodies. However, brass should be avoided in applications involving chloride solutions, as chloride can corrode the zinc in brass, compromising its stability.

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Additional General Insights Here

Specs of Ball Valve

Dimensions

Ball Valves are available in a range of sizes, typically measured by diameter. They can vary from 1/4 inch for small residential uses up to 48 inches for major industrial applications. But here’s the interesting thing, the choice of size directly affects the flow rate and pressure handling capabilities of the system. This means selecting the right size is crucial for maintaining optimal system performance.

Material

Ball Valves are made from a variety of materials to suit different industrial needs, including stainless steel and carbon steel. Stainless steel valves resist rust and are excellent for harsh conditions, making them ideal for a wide range of industrial applications. Carbon steel valves are valued for their strength and durability under high-pressure conditions, often used in oil and gas industries as well as other demanding environments.

Connection Type

Ball Valves from NTVAL comes with different types of connections, including threaded, flanged, or welded. Threaded connections are common in smaller sizes for easy installation and maintenance. Flanged valves provide a stronger bond, suitable for high-pressure systems, and welded connections offer the most robust seal.

Pressure Ratings

Ball Valves are rated for pressures from as low as 150 psi (pounds per square inch) to as high as 10,000 psi. The pressure rating needed depends on the system’s requirements—higher pressures are typical in oil and gas applications, while lower pressures might be sufficient for residential water systems.

Features of Ball Valves

Easy Operation

Ball Valves operate with a simple turn mechanism that enables rapid opening and closing. This operation is facilitated by a lever or handle that rotates a ball, which has a hole through its center. When open, the hole aligns with the flow path; when closed, it blocks the flow entirely.

Compact Design

The compact structure of Ball Valves makes them suitable for systems with limited space. Unlike other valves that might need more space or larger actuators, Ball Valves are ideal for tight spaces due to their straightforward build and fewer moving parts.

Multiple Connection Options

Ball Valves come with a range of connection types, including threaded, flanged, and welded options. This assortment allows them to be incorporated into nearly any piping system, enhancing flexibility and dependability in both installation and operation.

Benefits of Ball Valve

Enhanced Durability

Ball Valves from NTVAL are built to last, capable of enduring tough conditions which helps extend their operational lifespan. This durability reduces the frequency of replacements and maintenance, promoting long-term service and dependability.

Superior Sealing

Ball Valves achieve excellent sealing performance due to their precise construction and design. As the ball turns to a closed position, it securely fits against the valve's seats, establishing a firm seal that prevents any leaks and maintains the integrity of the system.

Low Maintenance

Ball Valves are designed for minimal upkeep, thanks to their straightforward design and sturdy construction. This advantage minimizes downtime and maintenance expenses, helping keep systems running smoothly with fewer interventions. And the best part? This streamlined maintenance not only saves time but also reduces costs in the long run.

Applications of Ball Valve

Water Supply Systems

Ball Valves are essential in water supply systems to regulate and direct water flow. They facilitate smooth movement of water through pipes, can be easily shut off for repairs, and prevent backflow that could contaminate the supply. This is crucial in both residential buildings and large-scale water distribution networks.