Compared to traditional heat fusion, electrofusion technology offers significant advantages: it is less dependent on the operator's skill level, as welding parameters are automatically controlled by the system. There is no need to manually adjust heating temperature and time, which helps avoid overheating or insufficient heating. This greatly improves the quality management of engineering projects. PE electrofusion fittings use this technology to create reliable, leak-proof joints.

The DN75 PE electrofusion fittings play a critical role in building risers and regional branch line networks, offering a balance between flow capacity and installation economy. Fittings of this size possess good resistance to bending and can effectively handle stresses caused by building settlement or temperature changes. An optimized fusion zone design ensures more uniform heat distribution, guaranteeing a high first-time success rate for medium-diameter connections. Their exceptional chemical corrosion resistance makes them particularly suitable for chemical drainage and industrial wastewater collection systems, ensuring long-term operational stability.

DN75 Series Electrofusion Fittings Product List

Category	Product Name	Model Example
Basic Connections	Electrofusion Coupler	S75
Basic Connections	Electrofusion End Cap	D75
Direction Changes	90° Electrofusion Elbow	L75*90
Direction Changes	45° Electrofusion Elbow	L75*45
Branching	Electrofusion Equal Tee	T75
Branching	Electrofusion Reducing Tee	T75×32/40/50/63
Flange Adaptors	Electrofusion Flange	FL75
Flange Adaptors	PPR Electrofusion Flange	FL75-PPR
Threaded Adaptors	Female Threaded Adaptor	75
Threaded Adaptors	Male Threaded Adaptor	75
Transition Fittings	Steel-to-PE Transition	75
PPR Specific	PPR Electrofusion Tee	T75-PPR

Common Issues

Contaminated or Damp Terminals

Moisture, oil, or dirt on the terminals can cause poor contact, sparking, or even short circuits when connected to the welder. This can potentially burn the terminals and halt the welding process.

Incorrect Welder Parameters

Mechanically using standard calibrated time/voltage without adjusting for site conditions (e.g., ambient temperature, voltage fluctuations) can lead to issues. In colder weather, heating time should be increased; if input voltage is low, the welder's output voltage should be raised if possible.

Loose Welder Cable Connection

Loose clamps on the terminals cause poor contact, leading to insufficient power delivered to the heating wire. This reduces heating effectiveness and can result in cold welds (lack of fusion).

Primary Application Areas for PE Electrofusion Fittings

Application Field	Typical Scenarios	Core Advantages
Municipal Engineering	Water supply networks, Drainage/Sewage networks, Gas distribution, Firefighting pipelines	Excellent sealing, corrosion resistance, long service life, suitable for buried installation
Building Water Supply/Drainage	Indoor/outdoor water supply, drainage, rainwater systems for residential/commercial buildings	Easy installation, reliable connection, no open flame, suitable for confined spaces
Industrial Piping	Process piping in chemical, pharmaceutical, and food plants; Circulating water systems	Chemical corrosion resistance, meets cleanliness requirements, high joint strength
Agricultural Irrigation	Water irrigation systems for large-scale farmland, greenhouses	Strong weather resistance, low flow resistance, cost-effective
Mining	Slurry transport, tailings disposal, mine dewatering/water supply	Good abrasion resistance, can withstand some impact, safe and reliable
Trenchless Rehabilitation	Old pipeline renewal, point repair	Minimal space requirement, high repair efficiency, low environmental impact