| Flexible Polyethylene Inserts Widely used in electric utility power stations, industrial power plants and on ships – wherever inlet end erosion and impingement present a problem – Conco Alkaserts ® polyethylene plastic inserts are designed to assure lasting protection to the inlet ends of new tubes and to greatly prolong the life of worn tubes damaged by erosion and impingement. Conco Alkaserts are inert and highly resistant to erosion and abrasion. They are dimensionally stable well above normal operating temperatures of steam condensers. They are flexible enough to accommodate normal variations in tube bores, yet rigid enough for easy insertion. Conco Alkaserts are designed to make a snug fit in the tube so that there is no danger of water seeping between the insert and tube and setting up a crevice corrosion attack. |
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Two Types of Alkaserts Head Designs Available |
Features: - Easily and quickly installed
- Conforms to irregular tube surface conditions – streamlining flow over these areas
- Inlet end streamlined for smooth flow. Bonnet head gives protection to ends of tubes or ferrules
- Internal taper promotes streamlined flow
- Dimensionally stable to 170º F, well above normal operating temperature of steam condenser
- Unaffected by normal cleaning chemicals
- Filtering action – holds foreign objects for easy removal
- Available for a wide range of tube sizes and gauges
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The “bonnet” type head is designed to cover the ferrule in ferrule-type installations. |
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The “flush” type head is designed for “flush” rolled-in tubes and close-clearance tube sheet designs. |
Quick and Easy Installation
Simply insert the Alkasert into tube and tap home with a wooden or Micarta “persuader,” using light, sharp blows of a light mallet. |
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