1 1/2" Ball Valves (DN40)

Available in a variety of body materials—including stainless steel, brass, carbon steel, and PVC—our DN40 range supports both standard and specialist applications. With connection options such as BSP, NPT, flanged, and welded ends, these 1 1/2" valves are suited for everything from water treatment plants and HVAC systems to chemical processing and food-grade installations. Their quarter-turn design makes them quick to operate manually or easy to automate with electric or pneumatic actuators for remote control and enhanced safety.

Why Are 1 1/2" Ball Valves (DN40) Important?

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1 1/2" Ball Valves (DN40) play a critical role in medium-to-large pipeline systems where reliable shut-off, minimal pressure loss, and high flow capacity are essential. Their full bore design ensures that flow is maintained without restriction, making them ideal for systems where efficiency and throughput are priorities. These valves are often used in industries such as water treatment, chemical processing, HVAC, oil & gas, and manufacturing—where both durability and ease of operation are non-negotiable.

Their importance also lies in their versatility. DN40 ball valves can handle a wide range of media, including corrosive chemicals, steam, gas, and liquids, making them suitable for a variety of applications. The ability to automate them easily with electric or pneumatic actuators enhances process control and safety in demanding environments. With robust materials, leak-tight sealing, and long service life, these valves contribute significantly to reducing downtime, preventing fluid loss, and improving overall system performance.

Where Are 1 1/2" Ball Valves (DN40) Used?

1 1/2" Ball Valves (DN40) are commonly used across a wide range of industrial and commercial systems where medium-sized flow control is required. You’ll find them in water treatment plants, managing the isolation and diversion of water in filtration and distribution systems. In chemical processing facilities, they are used for controlling aggressive fluids, acids, or solvents due to their corrosion-resistant materials and tight shut-off capability.

They are also widely used in HVAC systems, regulating hot and chilled water circuits, and in oil & gas operations for pipeline isolation, fuel handling, and general fluid transfer. In food and beverage manufacturing, hygienic DN40 ball valves made from stainless steel are used to control flow in clean processing lines. Additionally, you’ll see them in pharmaceutical plants, breweries, industrial laundries, cooling systems, and compressed air networks, where reliable, quick-action shut-off and low maintenance are essential for smooth operation.

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.