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Product Info > Single vs. Multi Barbs

KENT Systems Couplings

Single vs. Multi Barbs

When you compare KENT Systems products to what is currently in the market you will notice a different approach in the design of our barb. Traditionally, hose fittings have been manufactured with a multi barb. While this “More Is Better” style seems like an obvious approach, we aim to show you why our barb design is simply better.

Standard Multi Barb Design

Years ago, before starting his own fitting company, our founder Kent Sampson fought with the multi barb fittings. Like others, he found that the Barbs leaked and required constant tightening of tube clamps. This design flaw comes from the fact that the manufacturing of the multi barb configuration creates parting lines alonge the barb serfaces. As a result the parting line creates a channel by which fluid can excape the tube.

KENT Systems Single Barb Design

Determined to find a solution, Kent experimented with ideas before designed a single barb with no parting lines on the sealing surface of the barb. This ingenious idea resulted in a far better seal and ultimately a better product. Between the years 1968 and 2000, Kent played with different single barb designs all designed to work with a specific tube material. After founding KENT Systems, Kent prefected his design and created the Salient Barb™. This design not only works better than a multi barb, it also works works great over a wide range of tube materials. This refined design is exclusively found here at KENT Systems on our new product designs.

Easy To Install

KENT Systems Salient Barbs™ are easer to use than other barbs. If you have every tried to install a multi barb fitting, you will know that this is not being exaggerated at all... it is hard to push a tube on a multi Barbs fitting.

KENT Systems Barb - Easy to install

KENT Systems Barb - Pressure Test

KENT Systems Barb - Pressure Test

When you use tube fittings, you want to know that they are not going to leak or come apart. In this demo you will see that the KENT Systems Salient Barb™ fitting stays on the tubing better than the multi barb fitting. Simply put, the KENT Systems Salient Barb™ fitting out performs multi barb fittings under pressure.

KENT Systems Barb - Pull Test

The KENT Systems Salient Barb™ goes on the tube so easly, surly it should pull off just a easly... Right? Well let‘s see just how strong that barb is, Using the same braided tubing and fitting from before, we attempted to tow a car with our fitting. Click the video to see how it went.

Professional driver closed course, do not try this at home.

KENT Systems Barb - Pull Test

Advantages Of The Salient Barb™

  • Tubing can relax behind the barb providing a better seal
  • No parting line on the barb surface thus eliminating potential leak paths
  • Easier to assemble
  • Increases pressure performance
  • Eliminates the use of hose clamps in most applications

Disadvantages Of A Multiple Barb

  • Lower psi performance as the tubing cannot fully relax behind the barb to create a good seal
  • Parting lines that cause leak paths
  • Difficult to assemble
  • Requires the use of a hose clamp in most applications
  • Prone to disconnection in high pressure applications

KENT Systems Single Barb Design
cutaway of Salient Barb™ with tubing

Multi Barb Design
cutaway of multi barb with tubing

At KENT Systems we have used the application knowledge from our customers along with our personal experience collected over 32 years to create a better sealing barb. Just imagine, if we put this much time and testing into our barbs, consider what goes into the rest of our products.

Please see manufacture for terms, conditions, specifications, warranties and recommended use.

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