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Lug-Style vs Wafer-Style Butterfly Valves: Key Differences and Applications
A butterfly valve is a type of quarter-turn valve that controls the flow of a product in a pipeline. From pharmaceuticals to manufacturing and food processing, butterfly valves have a wide range of applications. They can regulate the flow of solids, liquids, or gases efficiently.
Types of Butterfly Valves
Butterfly valves are generally divided into two main types: lug-style butterfly valves and wafer-style butterfly valves. These designs are not interchangeable and each has distinct features, benefits, and limitations. Below is a comparison to help you select the right valve for your application.
Lug-Style Butterfly Valve
Lug-style butterfly valves are typically made of durable metals such as ductile iron or steel. They feature threaded tapped lugs positioned on the valve flanges for secure bolt connections.
Suitable for end-of-line service (blind flange recommended)
Compatible with pneumatic or electric actuation
Material of disc and seat should be selected based on media and application
Wafer-Style Butterfly Valve
Wafer-style butterfly valves are designed with four alignment holes that allow the valve to clamp securely between two pipeline flanges. Most wafer valves fit standard flange connections, and the EPDM or rubber seat ensures a tight seal.
Not suitable for end-of-line service (entire line must be shut down for maintenance)
Compact and cost-effective design
Compatible with pneumatic or electric actuation
Industrial Applications of Butterfly Valves
Butterfly valves are widely used across industries, including:
Oil and gas
Chemical processing
Water and wastewater treatment
Food and beverage processing
Pharmaceuticals
Manufacturing
Shipbuilding and shipyards
HVAC systems
Choosing the Right Butterfly Valve
The choice between a lug-style butterfly valve and a wafer-style butterfly valve depends on your pipeline design, maintenance requirements, and overall project specifications.
Looking for a reliable butterfly valve supplier?
Contact Solid today for detailed specifications, expert technical support, and competitive pricing.
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