Hose Expanders

Expanding a hose or sleeve so it can be drawn over a joint is a preparation step that decides whether the following operations are possible at all: if the sleeve cannot be opened to the required diameter without being damaged, no amount of care downstream will produce a sealed joint. The sizing inputs are the hose inner diameter, its wall thickness and material, and the diameter it must reach — a hose stretched beyond its elastic limit does not recover, and the joint leaks. Expansion is done with controlled air or mechanical fingers depending on the material. This is a small line and is usually specified together with the sealing or bundling machine that follows it.