- By Fang Zhou_D @Nov 13, 2013
Our Single Barb Fittings Features and Clamp
The threads are molded in precision-ground cavities resulting in perfectly
matched threads at the parting line. This produces the cleanest, most accurate
molded thread possible.
Why our fittings are better.
Our single-barbed fittings are designed so the mold parting line stops at thebase
of the barb. The ridge and the barb's conical surface are free of the molded-in
leak pathpresent in multiple barb
fittings. The conical surface is glass-like and smooth allowing excellent
The straight barb shaft provides space for the hose to relax behind the barb
causing the clampto work like a
drawstring. This forces the hose diameter to become smaller than the flare of
thefitting's barb. If the tubing
swells from internal pressure (near burst), the clamp will be pulledup
tight to the back of the barb and a tight seal will be maintained.
Why multiple barb fittings fail
Mismatches often occur with poor quality or worn tooling, causing misaligned
threads and barbs that result in leakage. With multiple barb fitting
designs, it is virtually impossible to avoid creating parting lines on the
barb surface. These parting lines create leak paths which become morepronounced
as the mold tooling wears.
Multiple barbs are typically in close succession. This prevents the tubing from
relaxing to its original size, which is essential to the barb's performance.
If the tubing does not relax behind the barb, the barb is rendered useless, as
shown above. (Note the bridging effect.)
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Do the job well, reduce the 1/2 to 3/8. No restriction since you already change tubing size so your restriction will be your actual setup since your not supposed to change tubing size in the middle of a loop...
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