1. Electrofusion Products

2. Electrofusion Products

3. Basic Design Characteristics of a GFCP Electrofusion Fitting
Fusion Zones
Cold Zones

4. Basic Design Characteristics of a GFCP Electrofusion Fitting
The cold zone is the part of the fitting found on either side of the fusion zone.
The purpose of the cold zone is to restrict the movement of the molten plastic generated in the fusion zone so that sufficient interfacial pressure can be built up in the fusion zone.
Cold Zones
Central Plastics Electrofusion Couplings are designed to have longer cold zones which are necessary to ensure good melt containment and proper interfacial pressures are achieved during the fusion process.

5. GFCP Electrofusion Fitting

6. Basic Design Characteristics of a GFCP Electrofusion Fitting
The size of the Central Plastics Electrofusion Fitting cold zones, the size of the fusion zones and the specific makeup of the wire used in the fusion zones are carefully calculated in relation the geometric configuration of the fitting in order to create a fusible interface zone that will exhibit sufficient strength to transmit all system forces

7. Excerpts from New Electrofusion Installation Manual
Pipe that has been installed by directional boring where drilling lubricants such as bentonite have been used require particular attention to pre-cleaning before scraping as well as any cleaning after scraping. Drilling lubricants, even when dried, can be difficult to see and are easily spread by wiping. Use extra caution to only wipe over areas that were previously cleaned with isopropyl alcohol to prevent spreading onto prepared surfaces.
Inspect the pipe surface to be scraped/peeled for embedded foreign objects such as rocks that might damage scraping tool blades.

8. Excerpts from New Electrofusion Installation Manual
Do not use detergents to clean the pipe.
Procedure: Clean an area larger than the area to be scraped/peeled and fused:
Mark the initially cleaned area.
a. For saddles, initially clean
(with water), dry, and mark an area that is approximately 3 times
wider than the area to be peeled/scraped. DO NOT WIPE OUTSIDE THIS INITIALLY CLEANED AREA IN LATER STEPS.
b. For couplings, initially clean (with water), dry, and mark an area that is at least 2 times the full length of the coupling on each pipe end. DO NOT WIPE OUTSIDE THIS INITIALLY CLEANED AREA IN LATER STEPS.

9. Excerpts from New Electrofusion Installation Manual
This will remove loose particles and mud and will establish the area that should not be exceeded when cleaning in later steps.
Additional cleaning of this area with Isopropyl alcohol is good practice to help remove other potential contaminates such as drilling fluids that may not be removed by cleaning with water. Do not exceed the marked limits of the cleaned area when wiping beyond the mark with alcohol.

10. Recent Returns

11. Electrofusion Manual
To download the most recent Georg Fischer Central Plastics Electrofusion Manual, Please visit our website at:
centralplastics.com