clamps. This silicone hose is quite soft so a SS liner is needed in the hose
clamp to prevent the hose from extruding through the worm gear slots.
The constant torque feature means the clamp can expand and contract
slightly as the aluminum hose barb expands and contracts when
it warms up and cools down. The washers are actually Belleville springs
back to back. The Breeze part number is CT-200L.
McMaster Carr part #5281K-17.  I bought a box of ten for about $34.

Al Gietzen wrote:

Just a suggestion - if you're clamping so tight as to extrude the silicon
through the slots; you are likely clamping too tight.  Over tightening
damages the hose and can result in premature failure.  Using double clamps,
or wider band clamps (like 5/8" wide, or more) to spread the clamping force
over a larger area is a good idea.

It is important that the tube your are connecting to at both ends cannot
move apart.  With 25 psi pressure, on a 1-1/2 line, there is about a 45 lb
force trying to push things apart.

Al

That silicone is REAL soft Al. Get some and try it?
The clamps I recommend above are 5/8" wide.
Good point on the separating force. 30 PSI is 53 pounds.

Interestingly enough .140 dia spring steel wire clamps are universally used
in automotive applications these days. In theory they are ideal as they
too expand and contract with barb temp changes. The downside is the 
narrow bearing area on the hose. I don't think they would work with silicone
hose.

Paul Lamar
 
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