ST24N1
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Technos 胶球ST24N1 Technos 胶球ST19N1 法国Technos天可诺胶球ST24H1 Technos天可诺胶球ST22N1 Type S : Standard balls: P : Extended life balls R : Abrasive balls Specification T : Standard G : Polishing Y : Fully Coated Z : Ring Coated with Corundum X : Blended with Corundum Diameter From 16 to 42 mm Increment 1 mm Specific diameter available on request Hardness J : Soft N : Medium-Soft F : Medium-Hard H : Hard Temperature 1 : Standard balls up to 80°C 2 : Heat resistant balls up to 140°C BALL SIZE Balls must be slightly oversized (2 mm larger) to apply enough pressure inside the tube to ensure correct cleaning. This rule can be changed for specific reasons Larger diameter : used for a longer ball-life when the condenser pressure drop is higher than usual. This applies only when the type of fouling allows the use of soft or medium soft cleaning balls. In other cases, the use of extra oversized balls can lead to ball blockage inside condenser tubes, reducing the heat exchange surface and triggering tube corrosion. For the above reason, balls must not swell due to a chemical reaction with water. Smaller diameter : when using abrasive coated balls or when condensers are equipped with protective nozzles or when the CTCS design does not prevent the risk of the ball becoming wedged between the strainer bars. In this last case, the use of harder but smaller balls can