Electrofusion Tapping Saddle

Structural features and core functions

Electrofusion heating wire embedding: The heating wire is pre-buried inside the pipe fitting, and the PE material is evenly heated and melted after power is turned on to achieve a strong bond.

High sealing performance: After welding, an integrated connection is formed to effectively prevent leakage.

Convenient construction: No additional flange or threaded connection is required, reducing installation time and cost.

Suitable for non-stop water operations: After installation, drilling can be directly carried out to extract water or gas, and it is widely used in municipal water supply, gas transmission and agricultural irrigation.

Working principle of Electrofusion Tapping Saddle

The pipe fitting adopts electrofusion welding technology. The built-in heating wire is heated by the current provided by the welder to soften and melt the PE material and combine with the surface of the pipe. After cooling, a firm branch interface is formed to ensure long-term and stable use.

Connection process analysis

Surface treatment: clean the pipe surface, scrape off the oxide layer, and improve the welding quality.

Fix the saddle: fix the electrofusion saddle fixture to the outer wall of the PE pipe.

Electric welding: heat the interface by electric heating with a special electrofusion welding machine.

Cooling and drilling: after the welding is cooled, special tools can be used to drill holes in the pipe and install the branch pipe.

Electrofusion Tapping Saddle product classification and specification selection

1. Classification of Electrofusion Tapping Saddle

Electrofusion Tapping Saddle (Electrofusion Tapping Saddle Water Collection Fixture) is a pipe fitting specially used for PE pipe system. It is used to add branch pipe connections to existing pipes. It is widely used in municipal water supply, gas transportation, agricultural irrigation and industrial fluid transportation. According to different application requirements, Electrofusion Tapping Saddle can be classified as follows

(1) Classification by pipe adaptation type

Standard electrofusion saddle: suitable for standard PE pipes (PE80, PE100).

High-pressure electric melting saddle: suitable for high-pressure pipeline systems, such as gas pipelines, usually meeting PN16 and above pressure requirements.

Special pipeline adaptation type: suitable for PE pipelines with protective layers, providing special structures to enhance welding reliability.

(2) Classification by connection method

With integrated valve: integrated ball valve or gate valve on the saddle to facilitate flow control, suitable for water supply and gas systems, and can be connected without water interruption.

Without valve: requires use with external valves, suitable for agricultural irrigation and industrial pipeline systems.

(3) Classification by branch pipe size

Fixed diameter branch type: branch pipe interface is fixed size, suitable for standard pipe network expansion.

Variable diameter branch type: can be replaced with connectors of different pipe diameters to increase the scope of application.

(4) Classification by application field

Municipal water supply special type: suitable for urban water supply network, can be opened to take water without water interruption, reducing the impact of water outage.

Special type for gas pipeline: suitable for gas pipeline connection, requiring high sealing and pressure resistance.

Special type for agricultural irrigation and industry: suitable for agricultural drip irrigation, sprinkler irrigation system and industrial fluid transportation.

2. Specification selection of Electrofusion Tapping Saddle

When selecting Electrofusion Tapping Saddle, it is necessary to comprehensively consider the pipe diameter, branch pipe size, pressure level and application scenario.

(1) Applicable pipeline range

Main pipe diameter: usually suitable for PE pipes of DN63-DN630.

Branch pipe diameter: branch pipe size generally ranges from DN20 to DN315, which can be selected according to needs.

(2) Main pressure rating (Pressure Rating)

PN10 (10bar): suitable for general water supply and agricultural irrigation systems.

PN16 (16bar): suitable for high-pressure water supply and gas pipelines.

(3) Technical standards

ISO 4427 (PE pipe water supply standard)

EN 12201 (PE pressure pipe system standard)

ASTM F1055 (Plastic pipe electrofusion connection standard)

GIS/PL2-4 (PE pipe and accessories standard for gas)

(4) Other selection factors

Whether it has a valve (if it has a ball valve, it is suitable for emergency repairs or temporary water supply systems)

Welding method (compatible with standard electric fusion welding machines and must meet welding parameter requirements)

Environmental adaptability (corrosion resistance, UV resistance, suitable for underground or open-air environments)

3. Selection recommendations

When choosing an Electrofusion Tapping Saddle, you can match it according to the following scenarios: