Leakage Control Products

ALH offer a full range of products approved by GIS and Kite Marked for the repair and maintenance of gas pipelines. From simple external injection and internal spraying to highly sophisticated external repair kits for standard, complex joints and valves.

What is a gas leak?

  • Pre early 1970 Town Gas fed the metallic gas network
  • This was ‘wet gas’ and kept gas joints ‘moist.’
  • When the UK moved to Natural Gas, this was dry and subsequently dried out the joints.
  • ALH was approached to manufacture a repair solution that can be inserted into the joint and thus ‘remediate’ and seal the leaking joint.

This is Flexspray, a two-part anaerobic system formulated to seal leaking mechanical and lead yarn joints on cast and spun iron, steel, and ductile gas mains.

Unlike other anaerobic solutions, Flexspray contains a flexibility additive that enables the joint to move while still being sealed, enhancing the longevity of the repair.

It is formulated to fully seal joints using capillary ‘wicking’ motion, ensuring a complete seal.

ALH manufacture the Flexspray sealant consumable and the equipment needed to seal leaking gas joints.

Leakage Control Products and Accessories

Products and replacement parts complementing the Leakage Control range.

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