Hubless coupling questions.

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Mike58

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Are there limits on use of shielded hubless couplings?

I am installing an ABS DWV system in new construction. Does the UPC limit the use of shielded hubless couplings, or can they be used just like a glued coupling (vertically and horizontally)?

I have places where it looks like the easiest (possibly only) solution to get the ABS glued together is to leave out a section and then put it in after everything else is glued up, with a hubless coupling on either side.

Are there any tips to help ensure the hubless couplings don't leak (for example, is there a preferred lubricant/sealant to use to help them settle in and seal well as they are tightened)?

Also, I find two styles of shielded hubless couplings. One has a smooth shield, and the other has a corrugated shield. Is one style better than the other (the corrugated shields seem to cost less, and look like they may have thinner metal)?

Thanks
 
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jadnashua

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No sealant is required. If you really want to do it right, you'd use a torque screwdriver to tighten them to specs. Don't know whether one version is better than the other.
 
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