Butterfly Valve Supplier
Valvesonly europe is the largest Butterfly Valve Supplier in Germany. A butterfly valve is a type of quarter-turn valve used to regulate the flow of fluids. Its name is derived from the disc’s movement, which resembles a butterfly’s wings. This disc, or vane, rotates around a central axis within the valve body to open or close the valve, thus controlling the flow of liquid or gas through the pipe. Butterfly valves are known for their compact design, efficiency, and ability to provide a quick shut-off.
Where are Butterfly Valves Used?
Butterfly valves are versatile and used across various industries due to their efficient operation and cost-effectiveness. Common applications include:
•Water and Wastewater Treatment: Used to regulate water flow, control chemical additives, and manage waste discharge.
•Oil and Gas Industry: Essential for managing the flow of crude oil, natural gas, and refined products.
•Chemical and Pharmaceutical Industries: Handles corrosive and non-corrosive chemicals safely.
•Fire Protection Systems: Utilized in firefighting water lines due to their reliability and quick operation.
Main Design of Butterfly Valves:
Butterfly valves come in several designs, each suited to specific applications. The main types include:
•Wafer Type: This is the most common type, designed to maintain a seal against bi-directional pressure differential to prevent backflow in systems designed for unidirectional flow.
•Lug Type: This design features threaded inserts (lugs) on both sides of the valve body, which allow it to be installed using two sets of bolts and without nuts, providing a more secure fit.
•Flanged Type: These valves have flanges on either side that match the pipe flanges, making them easy to install and remove.
•Double Eccentric (High-Performance) Butterfly Valves: These valves have an offset stem that reduces seat wear and allows for a tighter seal.
•Triple Eccentric (Triple Offset) Butterfly Valves: These are used for high-pressure applications and provide bubble-tight shut-off.
Working Theory of Butterfly Valve
The working principle of a butterfly valve is relatively simple. It involves a circular disc that is fixed to a rod. When the valve is closed, the disc blocks the passageway entirely. When the valve is fully open, the disc rotates a quarter turn to allow fluid to pass through with minimal obstruction.
•Closed Position: The disc is perpendicular to the flow direction, effectively blocking the flow.
•Open Position: The disc is parallel to the flow direction, allowing maximum flow.
•Throttling Position: The disc is at an angle between fully open and fully closed, which allows for flow regulation.
Components of Butterfly Valve
•Valve Body
•Disc
•Stem
•Seat
•Actuator/Handle
•Seals and Gaskets
Types of butterfly valve:
•Wafer Butterfly Valve
•Flanged Butterfly Valve
•Triple eccentric Butterfly Valve
•Double Offset Butterfly Valve
•Triple Offset Butterfly Valve
•Lug Butterfly Valve
Valvesonly europe is the largest Butterfly Valve Supplier in Germany and are essential components in many industrial applications due to their simplicity, efficiency, and versatility.
Description:
Body Material: Cast Carbon steel (WCC,WCB, WC6), Stainless Steel [SS316, SS304, SS316L, SS904L, CF8, CF8M, F31L, F91], DUPLEX STEEL and Super duplex Steel (F51,F53,F55) , Cast iron, Ductile Iron.
Size – 2” – 48”
Class- 150 to 300; PN 6 – PN 25
Ends- Wafer, flanged, lug
Operations- Lever operated, gear operated, pneumatic actuated and electric actuated.

https://www.valvesonlyeurope.com/product-category/lug-butterfly-valve/