Hose clamps are also used to extend lines, especially preconnects, if you pull off 200', and really need another 100' when you get into the building, you clamp the line behind the nozzle shutoff, and add a couple of sections. They are also required on engines per the ISO to get the proper credit. For LDH, most of the hose clamps use a hydraulic cylinder vs the old screw down type. On the smaller lines you can put a couple of kinks on a charged line, then bleed off the pressure, then extend the line if you don't have a hose clamp handy.

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