Stepless clamp size help

[zephed666]

Hello:

I have been looking to swap out my worm clamps with the oetiker crimp clamps and was hoping to confirm the sizes.
From everything I read the sizes should be:

3/16" ID 7/16" OD beer tubing - 1/4" barb - 13.3mm
5/16" ID 9/16" OD CO2 tubing - 5/16" barb - 15.7mm
5/16" ID 9/16" OD CO2 tubing - 3/8" barb - 17.0mm

My question is would it be possible to get away with the 17.0mm clamps with the 5/16" barb?

My regulator (taprite T752HP) has a 5/16" barb and the ball lock (gas) has a 3/8" barb.

 

[Stealthcruiser]

"Single pinch" or "double pinch"?

http://www.mcmaster.com/#standard-hose-clamps/=z2d9ge

 

[zephed666]

"Single pinch" or "double pinch"?

http://www.mcmaster.com/#standard-hose-clamps/=z2d9ge

Single pinch...

 

[Stealthcruiser]

On the link I gave, did you look @ the size range differences, between the two types, as in how much further the double would constrict, over the single?


Edit:

Looks like your tubing wall thickness is approx. 1/8 inch, which leaves you about .062 "slop" on the 5/16" barb........

Question: You just trying to avoid buying another size, (ie: can you not buy them individually)?

 

[zephed666]

On the link I gave, did you look @ the size range differences, between the two types, as in how much further the double would constrict, over the single?

I wouldn't use the double pinch. Those don't have the tongue and groove design...

the McMaster sizes would be approx...
Oetiker 13.3mm - McMaster 27/64 - 17/32 - 52545k51
Oetiker 15.7mm - McMaster 33/64 - 5/8 - 52545k54
Oetiker 17.0mm - McMaster 37/64 - 43/64 - 52545k55

Still wondering if I can get away with the one clamp for both barb sizes...
could probably get away with the larger one since it seems to constrict to the spec needed as well. just hoping someone knew for sure...

 

[Stealthcruiser]

Yes, I would think you could.
Get the tubing hot and pliable in some hot water, and grab the tightest "lug" on the clamp that you can latch by hand, then crimp away!

If it doesn't work, you are going to wind up having 3 sizes on hand anyway after you buy the other size, Yes?

I didn't know you were specifying the "gap free" style, but I bet it would work!

But I don't know for sure.

Personally, I would wrestle the 15.7 on both.

 

[bubba_drums]

I too am struggling with this. Is the crimping tool something I should be able to find at my local Menards/Home Depot?

http://www.menards.com/main/plumbin...449376569-c-8612.htm?tid=-1971737594170548191

 

[zephed666]

I too am struggling with this. Is the crimping tool something I should be able to find at my local Menards/Home Depot?

http://www.menards.com/main/plumbin...449376569-c-8612.htm?tid=-1971737594170548191

You should be able to get them there or Home Depot. I ended up using end clippers since I had them and they worked fine...

 

[Brewerforlife]

Here's a couple charts to help with sizing. Cheers!

 

[Brewerforlife]

Tubing

 

[seabrew8]

Is it normal to have 1/4" barbs on my gas manifold? I lost all the air in my tank recently a 20lb tank!

 

[william_shakes_beer]

Talk to me like I'm stupid. Why are you replacing your worm clamps? I use all worm clamps and haven't had a leak yet. From the literature attached above, it looks like the oetiker clamps are one time use devices.