USE:

For the protection of valve, flanges and similar structures from corrosion above ground, buried or immersed. To protect the metal structure from the environment the tape must cover the entire surface.

EQUIPMENT LIST

Power wire brush / scraper / blast cleaning equipment (optional)

Brush, brush cleaning solvent

Utility knife

Overalls, gloves, cleaning cloth, hand cleaner, barrier cream

APPLICATION

1. Surface preparation:

Surfaces must be dry and free from dirt. Solvent wipe with a clean cloth to remove any grease deposits.

Power wire brush to remove all scale, loose rust and old flaking coatings to achieve a finish of St2 according to ISO 8501-1 or Swedish Standard SIS 0055900.

The preferred method for refurbishment of old pipe lengths is abrasive blast cleaning to Sa21/2 according to ISO 8501-1 or Swedish Standard SIS 0055900.

2. Priming:

Brush apply one coat of Premcote Primer over the entire area to be wrapped. Allow to dry.

Coverage: 9-11 m2/l

Wet film thickness: 90 -110 microns

Dry film thickness: 40 – 50 microns

Drying time: Approx 10 minutes

3. Premier Moulding Compound

Profile the pipe joint, flange, valve with Premier Moulding Compound so that there will be no air gaps under the subsequent tape wrapping. Push the mastic firmly into all cavities and around all bolt heads building it up to form a profile suitable for wrapping without forming bridges or voids.

4. Premcote tapes

Firstly, wrap the tape in horizontal strips, starting from the bottom upwards in weatherboard fashion, overlapping by at least 55% to give a double wrap.

Secondly, spirally wrap the tape with tension, starting from the one side of the flange, overlapping each turn by at least 55% to give a double wrap. Smooth finished wrap down well particularly at the tape edges.