Butterfly valves

What is a Butterfly valve?

Butterfly valves are used across a wide range of industries including water supply, wastewater treatment, Irrigation, fire protection, gas supply, chemical processing, oil handling, and power generation. Their main advantages are their simple construction, which requires minimal space, and their lightweight nature, which typically results in lower costs compared to other valve types. Butterfly valves can be operated through various means such as manual handles, gear systems, or actuators, tailored to specific operational needs.

Butterfly valves are available in different designs, primarily classified as centric (or concentric) and eccentric. In a centric butterfly valve, the stem is centrally aligned with both the disc and the bore, offering a straightforward design. In contrast, eccentric butterfly valves feature stems (stub shafts) that are offset from the center. This category includes double and triple offset valves, which offer enhanced performance and durability.

AVK's Butterfly Valve Range

AVK provides a comprehensive selection of butterfly valves, catering to diverse applications with both centric and eccentric designs. Our offerings include:

Centric Butterfly Valves with Fixed Liner

Ideal for vacuum conditions and high flow velocities, these valves are designed for applications requiring frequent operation, such as rapid open/close cycles. Fixed liner valves are commonly used above ground but can also be installed underground with double flanged versions. They are suitable for water, wastewater, gas, fire protection, and industrial applications.

Centric Butterfly Valves with Loose Liner

These valves are a cost-effective choice for above-ground applications where ease of replacement and maintenance is a priority. The replaceable liner allows for flexibility in material choices and is designed for applications involving water, wastewater, and industrial processes.

Double Eccentric Butterfly Valves

Often utilized in below-ground water supply applications, these valves are a cost-efficient alternative to gate valves, particularly in larger sizes. They also perform well in above-ground installations. Their design allows for lower bury depths, making them suitable for a variety of installation environments.