HDPE Electrofusion Expansion Socket Fittings for Siphonic Drainage

HDPE electrofusion expansion socket fittings for siphonic drainage, DN50-315 mm, PN6-PN16, electro-welded sockets that absorb thermal movement in roof drainage stacks.

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Category: HDPE Siphonic Fittings

HDPE Siphonic Fittings

Product Overview

HDPE electrofusion expansion socket manufactured from PE100 for siphonic drainage systems, compensating thermal expansion in long stacks. This HDPE expansion socket absorbs axial movement caused by temperature swings in tall siphonic drainage stacks, preventing stress cracks and joint failure. Rated PN6 to PN16 under ISO 4427 and EN 12201 for DN 50 to 315 mm pipe.

Quick Information

Diameter Range: DN 50 - 315 mm
Pressure Rating: PN 6 - PN 16
Applicable Standards: ISO 4427, EN 12201
Stock: In stock

Specification Table

尺寸规格
50
75
110

Key Features

Thermal Expansion Compensation: The HDPE expansion socket absorbs axial movement in tall siphonic drainage stacks, protecting joints from thermal stress.
PE100 Flexibility: This siphonic drainage fitting uses PE100's natural flexibility to handle repeated expansion and contraction cycles without fatigue.
Precision Sliding Surface: The HDPE expansion socket has a smooth inner bore that allows the pipe to slide freely while maintaining a watertight seal.
Leak-Free Fusion Ends: Both ends of this siphonic drainage fitting electro-weld to HDPE pipe by electrofusion, forming a homogeneous system with zero leak paths.
Corrosion and UV Resistant: The HDPE expansion socket never rusts and resists rooftop UV and chemical exposure for decades of service.
Full Size Range: This siphonic drainage fitting covers DN 50 to 315 mm with PN6 to PN16 ratings for any siphonic stack design.

Production

Raw Material

Every HDPE expansion socket is molded from certified virgin PE100 resin with carbon black UV stabilizer, batch-tested for melt flow rate, density and tensile properties.

Molding Process

Each siphonic drainage fitting is injection molded with precision cores that form the expansion chamber and fusion ends in one cycle, holding dimensional tolerance within 0.1 mm.

Quality Control

Batches of HDPE expansion sockets are sampled for axial movement testing, dimensional gauging and fusion joint integrity per ISO 4427 and EN 12201.

Applications

Tall siphonic drainage stacks in high-rise buildings use the HDPE expansion socket to compensate thermal movement over many floors.
Industrial plant siphonic systems install this siphonic drainage fitting where ambient temperature swings are extreme.
Rooftop-to-basement siphonic stacks rely on the HDPE expansion socket to prevent stress cracks at fixed points.
Municipal siphonic drainage networks choose this siphonic drainage fitting for reliable long-term expansion management.