EF Tapping Tees, Installation Guide, Electrofusion Couplers, HDPE, Tega EF Fittings, PVC Fittings

MOUNTING INSTRUCTIONS FOR EF TAPPING FITTINGS

1.Scraping of Fusion Zone:

Different from the couplers, in Tapping Fittings, Fusion Zone is the area where the resistance wires exists and which is located to the upper side of the fitting Before scraping, fusion zone must be marked with a marker on the pipe as shown in Figure 1.

In order to remove the oxide layer, scrape carefully the whole circumference of the fusion zone using a hand scraper as shown in Figure 2.

This scraping operation must be carried out just before fusing.

Attention

In order to remove the oxide layer completely, the pipe must be scraped so that shavings are formed and marking line is removed. This operation ensures removal of oxide layer, which may cause unsuitability for the jointing. The prepared surface must be protected against unfavorable weather conditions.

2. Degreasing of the Fusion Zone:

The prepared pipe and internal face of fitting must be degreased with a suitable cleaning agent and a white absorbent and nonfibrous paper as shown in Figure 3.

As a cleaning agent, trichloroethane, acetone or alcohol can be used. (The alcohol content must not be less than 96% by volume).

Attention

Degreased surfaces must be protected against dirt or unfavorable weather conditions.

3. Attaching Tapping Tees:

After correct positioning is done on the prepared pipe, fitting is closed and fully tighten both two screws uniformly by using a suitable screwdriver as shown in Figure 4.

4. Fusion:

Provided that the information given in the operating instructions are followed step by step and there is no problem, the fusion process can be started after fusion data of the tapping fittings is set to the fusion control unit by manually or by means of bar-code reader as shown in Figure 5.

Attention

Use only universal Fusion Control Unit.
As a safety precaution, be careful to stay at least 1 m away from the fusion area.

Before tapping operation the cooling times must be applied. Cooling times of tapping tee pieces are written on barcode labels.

5. Carrying out the tapping operation:

The cap on the tapping fitting is first unscrewed and put somewhere it cannot become soiled. After that, by means of a suitable hexagon wrench, the integral cutter is screwed down as shown in Figure 6.

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