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Why Use a Butterfly Valve Instead of a Gate Valve?

In industrial fluid control systems, selecting the right type of valve can significantly affect operational efficiency,  maintenance costs, and safety.

 Both butterfly valves and gate valves are widely used for on/off and throttling applications, but they differ fundamentally in design, operation, and suitability for certain conditions.

 This article explores why engineers and procurement managers might prefer a butterfly valve over a gate valve, focusing on performance, installation, maintenance, and long-term project considerations.

Definition and Basic Concepts

 

A gate valve is a linear motion valve that uses a flat or wedge-shaped gate to control flow.

The gate moves perpendicular to the pipeline, providing full open or full close functionality.

 Gate valves are typically used in applications requiring minimal pressure drop when fully open.

 

A butterfly valve uses a rotating disc positioned at the center of the pipe.

The disc rotates 90 degrees to allow flow or create a seal. Butterfly valves are compact, lightweight, and offer quick operation with a quarter-turn motion.

They are widely adopted in industries where space, cost, and maintenance efficiency are critical.    

Procurement tip: When deciding between these two valves, consider flow control needs, system size, and maintenance capabilities.

Working Principle and Mechanical Differences

The gate valve’s wedge-shaped gate moves vertically to block or allow fluid flow.

Its full-bore design provides minimal pressure drop when open, but the valve requires substantial space for the gate’s vertical travel and more time to operate.

Butterfly valves, by contrast, feature a central disc connected to a stem. Rotating the stem 90 degrees swings the disc from closed to open.

The streamlined design offers several advantages:

  • Compact Size: Requires much less space than a gate valve.
  • Quarter-Turn Operation: Faster actuation reduces labor time in manual or automated systems.
  • Lightweight: Easier to install and support, especially in large-diameter pipelines.
  • Low Maintenance: Simple design reduces wear and tear on the sealing surfaces.

Engineer’s note: Consider disc alignment, seal material, and eccentricity type (concentric, double-eccentric, or triple-eccentric) to optimize sealing performance.

Why Choose Butterfly Valves Over Gate Valves?

  • Faster Operation: Quarter-turn actuation vs multi-turn gate operation.
  • Space Savings: Compact design reduces installation footprint.
  • Lower Cost: Lighter weight reduces material and support structure expenses.
  • Maintenance-Friendly: Fewer moving parts and simpler sealing mechanism.
  • Versatility: Suitable for throttling, on/off, and automated applications.

Reminder: Gate valves are still preferred for full-bore, high-pressure pipelines where minimal flow restriction is critical.

Selection and Procurement Tips

  • Assess system pressure, temperature, and flow requirements before choosing a valve type.
  • Consider valve face-to-face dimensions and available space for installation.
  • Specify seal materials compatible with the medium.
  • Check compliance with international standards (ISO,  CE) for industrial projects.
  • Plan for automation if frequent remote operation is required, using pneumatic or electric actuators.

Conclusion & Call to Action

Butterfly valves offer a combination of compact size,  fast operation,  and low maintenance, making them an excellent choice in many industrial systems.

While gate valves still serve specific high-pressure or full-bore applications, butterfly valves provide engineers and procurement managers with efficient and cost-effective solutions for modern projects.

📩 Contact DKV Valve today to request datasheets, pricing, or customized valve solutions backed by over 40 years of industrial valve expertise.

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