The difference between butterfly flange and ordinary flange
Butterfly flanges and ordinary flanges are two different types of flanges used in piping and industrial applications. They serve similar functions but have distinct designs and applications. Here are the key differences between butterfly flanges and ordinary flanges:
Design and Shape:
Butterfly Flange: A butterfly flange is typically shaped like a butterfly's wings or a double-disc. It consists of two metal plates or discs connected by a central hinge or pivot point. When the hinge is rotated, the plates can open or close like the wings of a butterfly.
Ordinary Flange: An ordinary flange is a flat, circular or rectangular plate with bolt holes around the perimeter. It is typically used to connect two sections of pipes, valves, or other equipment.
Function:
Butterfly Flange: Butterfly flanges are primarily used for regulating or controlling the flow of fluids or gases within a pipeline. By adjusting the position of the butterfly valve, the flow can be throttled or completely shut off.
Ordinary Flange: Ordinary flanges are used for connecting and securing pipes, valves, or other equipment together in a piping system. They provide a leak-tight seal and support the weight of the connected components.
Sealing Mechanism:
Butterfly Flange: Butterfly flanges use a rotating disc or valve to control the flow. The sealing is achieved by pressing the disc against a seat or sealing surface to create a watertight or airtight seal.
Ordinary Flange: Ordinary flanges use gaskets, O-rings, or other sealing materials between the flange faces to create a tight seal. Bolts and nuts are used to compress the flanges together, ensuring a secure seal.
Flow Control:
Butterfly Flange: Butterfly flanges are ideal for applications where flow control is critical, such as in HVAC systems, water treatment plants, and some industrial processes.
Ordinary Flange: Ordinary flanges are primarily used for joining pipes and components and do not have inherent flow control capabilities. However, flow control can be achieved using additional valves or equipment connected to the flanged joints.
Applications:
Butterfly Flange: Commonly used in applications where precise flow control is required, including water treatment, HVAC systems, and some chemical and food processing industries.
Ordinary Flange: Used in a wide range of industries and applications for connecting pipes and equipment, including oil and gas, petrochemical, power generation, and general plumbing.
In summary, butterfly flanges are specialized flanges designed for flow control, while ordinary flanges are general-purpose flanges used for connecting and sealing pipes and equipment. The choice between the two depends on the specific requirements of the piping or industrial system in question.
