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Telescopic Flanged Butterfly Valve

Product Features

● Integrated Expansion Joint: Allows controlled axial adjustment to compensate for thermal expansion or installation deviation.
● Double Flanged Body: Provides strong rigidity and easy installation on large-diameter pipelines.
● Centerline Butterfly Disc: Smooth operation with low torque and reliable sealing.
● Replaceable Seats: EPDM, NBR, PTFE optional for water, air, and weak chemical media.
● Leak-Tight Design: Maintains sealing performance under PN10/PN16 pressure classes.
● Anti-Pull-Out Safety Structure: Ensures the extension section remains secure during pipe pressure changes.

Product Overview

Product Overview

The Telescopic Flanged Butterfly Valve integrates a flanged butterfly valve with a built-in telescopic (expansion) joint, designed to compensate axial displacement, thermal expansion, and installation tolerances in pipeline systems.

It ensures reliable shut-off while allowing limited axial movement, making it ideal for pipelines with vibration, thermal changes, or alignment requirements.

Widely used in water supply networks, pump stations, HVAC systems, irrigation pipelines, and industrial water applications.

Product Advantages

Product Advantages

● Compensates Axial Displacement: Reduces stress caused by temperature changes or pipeline vibration.
● Simplifies Installation: Helps align pipelines and eliminates the need for separate expansion joints.
● Improves System Safety: Prevents flange deformation due to pipeline shrinkage or expansion.
● Ideal for Large Pipelines: Especially suitable for DN200–DN1400 water transmission lines.
● Long Service Life: Anti-corrosion coating and reinforced structure enhance durability.

Technical Specifications

Size Range

● DN50 – DN1400

 

Pressure Rating

● PN10 / PN16

 

Standards

● Design Standard: EN 593 / ISO 5752
● Test Standard: EN 12266 / ISO 5208
● Flange Standard: EN 1092-1

Industry Applications

Industry Applications

● Municipal water distribution pipelines
● Pump stations & booster systems
● HVAC cooling and heating circulation loops
● Irrigation & agricultural pipeline systems
● Industrial water and drainage pipelines
● Pipelines requiring compensation for thermal or installation displacement

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