Heat Shrink Anode Cap for Cathodic Protection (ANODECAP GAC)

About Heat Shrink Anode Cap for Cathodic Protection (ANODECAP GAC)

In a cathodic protection system, a common cause of early failure is the anode-to-lead-wire connection: moisture gets in, the connection corrodes and the wire works loose from the anode. Gala's ANODECAP seals that connection.

The cap is a black moulding of highly cross-linked polyolefin, stepped from a wide end that fits over the anode to a narrow neck that fits the lead wire. It is lined with a sealant that adheres to the anode material and to the wire insulation. Placed over the anode end with the wire through the neck, it is heat-shrunk at 125 deg C so the wide end grips the anode and the neck grips the wire. The result is a moisture-proof, electrically insulated seal at the wire exit, with strain relief so that movement of the wire does not load the connection.

Six sizes cover anode-end bores recovering to 20, 40 or 50 mm and lead-wire necks recovering to 4.5 to 5.5 mm. Gala's guaranteed values include an operating range of -55 to +100 deg C, 12 N/mm2 minimum tensile strength, 350 % minimum elongation and a non-corrosive material.

The caps are used by cathodic protection contractors and anode manufacturers on anodes for pipelines, tanks, marine structures and plant. Gala is an ISO 9001, ISO 14001 and ISO 45001 certified manufacturer.

Manufactured by Gala in India. Datasheet and size selection on request.

Specifications

• Brand: Gala
• Product type: Heat-shrinkable anode cap (anode-to-lead-wire seal)
• Material: Highly cross-linked polyolefin
• Colour: Black
• Operating temperature: -55 to +100 deg C
• Size range: GAC 0420 to GAC 0550; anode end recovering to 20 to 50 mm, wire end to 4.5 to 5.5 mm
• Wall type / thickness: Recovered wall 3.5 to 4.8 mm at the anode end, 2.5 to 3.9 mm at the wire end
• Adhesive / sealant: Internal sealant lining that bonds to anode and wire insulation
• Standards tested to: Material XRF-screened for cadmium, lead, mercury and chromium by TCR Engineering (NABL-accredited lab), 2020 - none detected
• Application: Sealing the lead-wire exit of cathodic protection anodes
• Installation: Heat-shrink over the anode end with the wire through the neck
• Country of origin: India
• Shrink temperature: 125 deg C
• Tensile strength: 12 N/mm2 min (ASTM D638)
• Elongation: 350 % min (ASTM D638)
• Water absorption: 0.2 % max (ASTM D570)
• Dielectric strength: 12 kV/mm min (ASTM D149)
• Corrosion: Non-corrosive (Gala guaranteed value)

Sizes

• All in mm. ID = supplied (min) / after free recovery (max). Length = total supplied length, +/- 2 %.
• Code | Anode end ID | Lead-wire end ID | Total length supplied | Wall anode / wire end
• GAC 0420 | 41 / 20 | 13 / 4.5 | 120 | 3.5 / 2.5
• GAC 0420A | 50 / 20 | 14 / 4.5 | 115 | 3.5 / 2.5
• GAC 0540 | 82 / 40 | 16 / 5.0 | 150 | 4.7 / 3.7
• GAC 0540A | 108 / 40 | 16 / 5.0 | 140 | 4.8 / 3.8
• GAC 0550S | 108 / 50 | 20 / 5.5 | 180 | 4.7 / 3.9
• GAC 0550 | 145 / 50 | 20 / 5.5 | 175 | 4.7 / 3.9

Applications: Cathodic protection (ICCP and galvanic anodes), oil and gas pipelines, water pipelines, storage tanks, marine and port structures, refineries and process plants, anode manufacturing