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Overview
A butterfly valve is a quarter-turn rotary motion device used to regulate or isolate fluid flow in industrial piping systems. It typically features a disc mounted on a rotating shaft within a circular body, often constructed from stainless steel, cast iron, or carbon steel. These valves generally adhere to industry standards such as API 609 or ISO 5752 for face-to-face dimensions and pressure ratings.
Application
- Water & Wastewater: Treatment plants for intake and distribution control.
- Chemical Processing: Handling corrosive fluids with lined or specialized alloy bodies.
- Petrochemical: Large diameter pipelines for oil and gas transmission isolation.
- HVAC Systems: Air and water flow regulation in commercial buildings.
Precautions
- Temperature Limits: Strictly observe operating ranges to prevent seal deformation.
- Lubrication: Ensure periodic maintenance of stem seals and bearings.
- Cycle Monitoring: Schedule replacement after high-cycle operations to avoid leakage.
- Installation: Verify proper alignment to eliminate stress on the valve body.