In general, the best practice is to utilize a barb style with the best combination of sealing integrity, high pull-off strength, and low assembly force for the type and size of tubing that will mate with it.
The most fundamental test performed on a barbed fitting is a simple pull-off test.
Fittings designed for internal tubing diameters from 1/16" through 5/32" have a barb
size 1.5 times the internal tubing diameter.
Coated to avoid dust accumulation and specially designed, the reverse needles have a barb
shape designed to aid the normal barb needles in manufacturing an even and strong surface.
"We are very pleased to have a barbed
check valve option for our customers," said Ken Davis, global product line manager.
To explain these numbers, like other collectibles, if a barbed
wire specimen is enough different in appearance to easily see, it is usually defined as another design.
While this barb design may cut the likelihood of a leak, it also means that Value faces mold-design difficulties and sacrifices cavitation: A barbed
fitting with a parting line on its conical section would typically run in an eight-cavity tool with four slides, while Value's design runs in a four-cavity tool that has a more complex arrangement of slides and inserts.
Delbert Trew is one of the men who helped found the museum and says that he and his fellow barbed wire enthusiasts were inspired by a barbed
wire museum in Lacrosse, Kan.