14" Ball Valves (DN350)

When it comes to large-diameter pipeline systems, 14" Ball Valves (DN350+) and above play a vital role in ensuring safe, efficient, and reliable flow control. These oversized ball valves are designed to handle extremely high flow rates, pressures, and harsh operating conditions found in major infrastructure and industrial projects. Whether used in water distribution, oil and gas transmission, power generation, or process industries, these valves provide full-bore performance with minimal pressure drop and fast shut-off capability.

Key Features

Key features and benefits of 14 inch Ball Valves (DN350).
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Key Features

These large-diameter ball valves feature a full-bore design that allows unrestricted media flow, reducing turbulence and pressure loss across the system. This makes them ideal for high-volume applications like water transmission and oil pipelines.
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Key Features

Manufactured from durable materials such as carbon steel, stainless steel, or duplex alloys, these valves are built to withstand extreme pressure and temperature conditions. Their rugged build ensures long service life in the most demanding environments.
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Key Features

Even at large sizes, DN350+ ball valves deliver tight shut-off to prevent leakage and maintain system integrity. This is essential in critical applications where downtime or product loss is not an option.
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Key Features

These valves can be operated manually via gearbox or fully automated with electric, pneumatic, or hydraulic actuators. Automation ensures efficient remote control and integration with SCADA or PLC systems for total process management.
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Key Features

Each valve is manufactured and tested to meet international standards such as API, ASME, and ISO. This guarantees compatibility, safety, and performance in regulated sectors including petrochemicals and energy.
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Key Features

Despite their size, many large ball valves are designed for straightforward maintenance with features like accessible seals and split-body construction. This reduces long-term servicing costs and minimises system downtime.

We Have The Expertise And Supply Chain To Source VERY Big Valves

We supply a wide range of large-diameter ball valves, including 14", 16", 18", 20", 24" and above, available in various configurations such as flanged ends, gear operated, and fully automated packages. Constructed from robust materials like carbon steel, stainless steel, and duplex alloys, our valves are built for longevity, corrosion resistance, and heavy-duty operation. Every valve is tested and specified to meet international standards, ensuring safe integration into high-stakes systems where failure is not an option.

No matter how demanding the application or how large the system, we have the expertise and supply chain to source, specify, and deliver large ball valves that perform under pressure. Speak to our team today for technical support, fast quotations, and tailored solutions for your large-scale valve requirements.

Why Are 14"+ (DN350+) Ball Valves Important?

14"+ ball valves (DN350 and above) are essential for controlling flow in large-diameter, high-capacity pipeline systems where standard valve sizes simply aren’t sufficient. These valves ensure safe and efficient shut-off in critical infrastructure such as municipal water networks, oil and gas pipelines, power plants, and industrial process facilities. Their ability to handle high pressures and extreme flow volumes makes them a cornerstone of system reliability and operational safety.

In large systems, even minor flow disruptions or pressure drops can have massive impacts—these valves help prevent that by maintaining unrestricted, full-bore flow with fast-acting shut-off. Their rugged design and customisation options, including automation and gear operation, allow seamless integration into complex control networks, ensuring efficient performance even in remote or hazardous locations. Simply put, without these high-capacity valves, large-scale fluid management would not be possible.

Where Would You Find 14"+ (DN350+) Ball Valves?

You would typically find 14" and larger ball valves (DN350+) installed in major industrial and infrastructure systems where high-volume flow control is critical. These include municipal water supply lines, wastewater treatment plants, and district heating or cooling systems, where they help manage flow in large-diameter pipelines. In the oil and gas industry, they're used in refineries, storage terminals, and long-distance transmission pipelines, offering safe shut-off for high-pressure and hazardous media.

You’ll also find these valves in power stations, chemical processing plants, and marine or offshore platforms, where flow control of steam, cooling water, fuel, or process chemicals at scale is required. Their ability to integrate with automated systems makes them ideal for remote or hazardous locations, where manual access is limited. Wherever reliability, flow capacity, and system safety are priorities, DN350+ ball valves are a critical component.

Got a Project in Mind? Let’s Talk.

If you're working on a large-scale project that requires high-performance flow control, we're here to help. Whether you're planning a new installation or upgrading an existing system, our team can assist with expert advice, tailored specifications, and fast sourcing.
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Frequently Asked Questions

A ball valve is used to start or stop the flow of liquids or gases by rotating a ball with a bore inside the valve body. It provides quick, reliable shut-off with minimal pressure drop.

Ball valves use a hollow, pivoting ball that aligns with the flow path when open and rotates 90° to block flow when closed. The handle position clearly indicates whether the valve is open or shut.

Ball valves are not ideal for throttling or precise flow regulation, as partial opening can cause seat wear and turbulence. They're best used in fully open or closed positions.

Ball valves can be made from stainless steel, brass, bronze, PVC, CPVC, carbon steel, and other alloys. Material choice depends on the application, pressure, and media compatibility.

Yes, many industrial-grade ball valves are designed to handle high pressures, especially those made from metal with reinforced seals and full-bore designs.

Common types include two-piece, three-piece, flanged, wafer, full bore, reduced bore, and multi-port ball valves. Each type suits different installation and maintenance needs.

Ball valves have a long service life, especially in clean systems. With minimal moving parts and a durable seal, they often outlast other valve types when used correctly.

Most ball valves are bidirectional and allow flow in both directions. However, some designs may be unidirectional depending on the seat and body configuration.

Yes, ball valves can be fitted with pneumatic or electric actuators for remote or automatic control. This is common in industrial and process automation.

Ball valves are generally low maintenance. Three-piece designs are preferred where service or cleaning may be needed, as they allow in-line maintenance.

Ball valves are used across many sectors, including oil & gas, chemical processing, water treatment, food & beverage, pharmaceuticals, and HVAC systems.

Ball valves come in sizes ranging from 1/4" (DN08) for small systems to 12" or larger (DN300+) for industrial pipelines. Size selection depends on flow rate and pipe compatibility.

FAQ

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14" Ball Valves (DN350)