hose clamp

Hose clamps.

Most commercial hose assemblies are delivered with sleeve-type hose clamps. These type of clamps are inexpensive, quick to assemble, and attractive. However, they do have a couple of drawbacks. They can’t be tightened up when the assembly starts to leak, which leaves replacement as the only option. This brings to light their next problem—sleeve clamps can be very difficult to remove. In most instances they must be peeled off of the hose and fitting. The preferred replacement for the sleeve is the band clamp. These clamps are a band of metal that has two ears for crimping. The clamp is assembled with the hose and fitting using a special crimping tool to set the ears of the band. Band clamps provide excellent clamping force and are easily tightened and removed. The least desirable type of clamp is the screw clamp. These clamps are generally used for automotive maintenance. Screw clamps can be damaged easily by overtightening and the damage may not be apparent until the hose pops off the fitting while under pressure. Another drawback of screw clamps is that the end of the tab protrudes out from the assembly, which produces a cut hazard. If it is necessary to use a screw type hose clamp, then it should be wrapped with a protective cover of heavy industrial tape.

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