Heat Shrink Coupler for Corrugated HDPE Pipe Jointing (GCMW)

About Heat Shrink Coupler for Corrugated HDPE Pipe Jointing (GCMW)

Corrugated HDPE pipe is laid in long runs for water management, irrigation, sewerage, storm drainage, mining and underground cable protection, and every joint has to stay tight in the ground. Gala's Heat Shrink Coupler joins two pipe ends with a heat-shrunk sleeve instead of butt welding, snap-fit couplers or split couplers.

The coupler is a cross-linked polyolefin tube lined with hot-melt adhesive. Positioned over the joint and heated, it shrinks onto both pipe ends and the adhesive melts into the corrugations, giving an in-line, sealed connection. It resists impact and abrasion, works in wet or dry underground conditions, and its elastic recovery lets it follow irregular contours. A wide shrink range means a few stocked sizes cover many pipe diameters.

Installation needs no special skill or equipment beyond a gas torch. Cut the pipe ends square, clean and degrease them, slide the coupler over the joint, then shrink it with a propane torch from the centre towards both edges until adhesive appears at the ends, and let it cool. Two people are recommended on the larger sizes.

Seventeen sizes run from 70/22 to 863/250: the first figure is the minimum inside diameter as supplied, the second the maximum inside diameter after recovery. Custom dimensions, lengths and colours can be made on request.

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

Specifications

• Brand: Gala
• Product type: Heat shrink coupler (adhesive-lined sleeve) for corrugated pipe jointing
• Material: Cross-linked polyolefin with hot-melt adhesive lining
• Colour: Black
• Operating temperature: -40 deg C to +110 deg C continuous
• Shrink ratio: About 3.2:1 to 3.6:1 by size (supplied ID / recovered ID)
• Size range: 70 mm to 863 mm supplied ID; 22 mm to 250 mm recovered ID
• Wall type / thickness: 2.7 mm to 3.5 mm after recovery (+/-10%)
• Adhesive / sealant: Hot-melt adhesive lining
• Standards tested to: Test methods quoted on Gala's datasheets - ASTM D638, ASTM D2671, ASTM D2240, ASTM D570
• Application: Jointing corrugated HDPE pipes and ducts for water, irrigation, sewer, drainage, mining and underground cable protection
• Installation: Propane torch, centre outwards until adhesive shows at both ends
• Country of origin: India
• Shrink temperature: 125 deg C
• Elongation at break: 350% min
• Hardness: 45 +/- 10 Shore D
• Water absorption: 0.5% max

Sizes

• 70/22 | D 70 / d 22 | T 2.7 | max length 1200 mm
• 90/28 | D 90 / d 28 | T 3.0 | 1200 mm
• 105/30 | D 105 / d 30 | T 3.0 | 1200 mm
• 115/34 | D 115 / d 34 | T 3.2 | 1200 mm
• 130/36 | D 130 / d 36 | T 3.2 | 1200 mm
• 140/42 | D 140 / d 42 | T 3.2 | 1200 mm
• 160/50 | D 160 / d 50 | T 3.3 | 1200 mm
• 180/55 | D 180 / d 55 | T 3.3 | 1200 mm
• 200/60 | D 200 / d 60 | T 3.5 | 1200 mm
• 250/70 | D 250 / d 70 | T 3.5 | 1200 mm
• 320/90 | D 320 / d 90 | T 3.5 | 500 mm
• 375/110 | D 375 / d 110 | T 3.5 | 500 mm
• 425/125 | D 425 / d 125 | T 3.5 | 500 mm
• 550/157 | D 550 / d 157 | T 3.5 | 500 mm
• 680/200 | D 680 / d 200 | T 3.5 | 500 mm
• 760/215 | D 760 / d 215 | T 3.5 | 500 mm
• 863/250 | D 863 / d 250 | T 3.5 | 500 mm

Applications: Water supply and irrigation, sewerage and storm drainage, municipal and infrastructure projects, mining, telecom and power cable ducting, pipe laying contractors