2 1/2" Ball Valves (DN65)

Manufactured from high-quality materials such as stainless steel, carbon steel, brass, and PVC, these valves are suitable for a variety of demanding environments including process plants, utility networks, water treatment facilities, and HVAC systems. The quarter-turn operation allows for quick and secure isolation, while options for manual, electric, or pneumatic actuation provide flexibility for both simple and automated systems.

Why Are 2 1/2" (DN65) Ball Valves Important?

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2 1/2" (DN65) ball valves are important because they bridge the gap between mid-sized and large-scale flow systems, offering high-volume control without compromising on efficiency or reliability. Their full-bore design allows for unrestricted media flow, making them ideal for process applications where pressure drop must be minimised. This is especially critical in systems handling large quantities of water, chemicals, steam, or gas, where flow consistency directly impacts performance and energy consumption.

These valves also offer flexibility in both installation and operation, with a wide range of material and end-connection options to suit different industries and environments. Whether manually operated or automated, they provide quick shut-off capabilities, enhancing system safety and responsiveness. Their robust construction and low maintenance needs make them a trusted choice for continuous-use applications across sectors such as chemical processing, utilities, manufacturing, and water treatment.

Where Would You Find 2 1/2" (DN65) Ball Valves?

You would typically find 2 1/2" (DN65) ball valves in medium to large-scale industrial and commercial piping systems where reliable flow control and high capacity are required. Common applications include water treatment plants, where they manage flow between filtration stages or storage tanks, and chemical processing facilities, where robust shut-off is needed for handling corrosive or pressurised fluids.

They are also used in HVAC systems, manufacturing plants, and utility services where fluid transfer must be maintained with minimal pressure drop. In oil and gas, steam networks, and bulk liquid transfer lines, DN65 valves are preferred for their ease of actuation and full-bore design, ensuring smooth and efficient flow even under demanding conditions. Their adaptability and durability make them a key component in both new installations and retrofit projects.

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.