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

Yellow Freight (for whom I do tractor-trailer maintenance) insists that ONLY
silicone hose clamps are to be used on silicone hose.  The exterior of the
hose is so soft, that the hose squeezes up through the slots of a standard
worm gear clamp when tightened with even a small screwdriver, let alone
after they are properly torqued.  I would not even consider using standard
worm gear hose clamps on silicone hose. Just another opinion based on
experience.  Paul Conner, Mobile, AL

Does that mean the hose clamp is made from silicone Paul ? :)

Got any brand names or part numbers on those  silicone hose clamps?

Paul Lamar
 
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