I use stainless steel Oetiker Stepless clamps for most gas and beer applications. I like the fact that they are… stainless steel, stepless (keep reading) and the fact that they stay tight (keep reading). These clamps are designed so that there are no steps (gaps) on the inside. That reduces the possibility that tubing will be torn or damaged. These are single use clamps. The upside of that is… Oetiker Stepless clamps will not loosen over time. When they’re tight, they’re tight. I really like that for kegerator applications because… A: I don’t like to empty CO2 tanks for no good reason and B: I don’t like standing beer in my kegerator.
A sizing note – Oetiker Stepless clamp sizes generally refer to the largest diameter in mm. So a size 13.3 means that the Oetiker Stepless clamp is 13.3 millimeters (about .52″) in diameter uncrimped. The largest size is usually easy to figure out. The smallest (crimped) size sometimes can be harder to figure out. Check out Oetiker’s Technical Data Sheet for that info. Just search for the model number you’re interested in.
Some sizes to consider…
Size 1/2″ (13.3 mm), Oetiker Stepless® Ear Clamps, Single Ear Hose Clamps, 7 Pack Sizes Available (25) – model 16700010 – 7 mm (about .275″) band width, 10.8 mm (about .425″) to 13.3 mm (about .525″) diameter – from Oetiker’s Technical Data Sheet
Size 35/64″ (14.0 mm), Oetiker Stepless® Ear Clamps, Single Ear Hose Clamps, 7 Pack Sizes Available (25) – model 16700012 – 7 mm band width, 11.5 mm (about 453″) to 14 mm (about .551″) diameter – from Oetiker’s Technical Data Sheet
Size 3/4″ (19.8 mm), Oetiker Stepless® Ear Clamps, Single Ear Hose Clamps, 7 Pack Sizes Available (25) – model 16702498 – 7 mm band width 16.6 mm (about .653″) to 19.8 mm (about .779″) diameter – from Oetiker’s Technical Data Sheet
I use a pair of nail nippers (meant for cutting heads off nails) but there are also purpose made tools for clamping Oetiker Stepless clamps…
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