What Are "No-Hub Couplings"

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PEX Universe (aka PEX-U) is a leading industrial equipment supplier offering high quality heating and plumbing solutions for real life professionals, homeowners + DIYers. The mission of the brand is to equip and empower consumers by providing the best products for heating and plumbing, delivering the most authentic customer service, and offering the most competitive prices available online. PEX Universe was established in 2004, and is based in Brooklyn, NY.
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On our site we have these Equal and reducing no-hub couplings for use with cast iron or PVC pipe in DWV (Drain/Waste/Vent) plumbing applications.
Technical Specifications: (for 1-1/2" no-hub coupling)
For use with: 1-1/2" cast iron no-hub or sch. 40 PVC pipe
Shield & clamp material: 310 Stainless Steel
Screw material: 305 Stainless Steel
Screw size: 5/16" HEX head
Gasket material: Neoprene
Max. torque: 60 inch/lbs
Meets or Exceeds ASTM C564 and C1277
UPC and IPC Approved.
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[@smirkinatu5512]

Thank you for recording and posting this valuable educational video.

[@1catbrains]

Love the hair

[@noelv1976]

How do you guys make it fit between the pipes without breaking or loosening them?

[@xJROIDx]

Slide the metal piece on first then run the rubber under hot water or use your hands to roll it and warm it up. The rubber part is pretty flexible when it’s warmed up

[@jmac213stuff]

so which ones for above ground and below ground, what's the difference? is it the material, gasket or reinforcement?

[@sonofthunder.]

Some are allowed under concrete like,mission,fernco may not be,if theres possible movement in that area,fernco may not be fully encased by steel like those in the video

[@warren9402]

Still didn't give the definition of a no-hub coupling.

[@Gravybagel]

1:26 did he just try to put the coupling inside the pipe???

[@LeslieDugger]

No that was the inside of the coupling

[@radian2323]

You are correct. What the heck...

[@AdamSmithChill]

lol i rewinded that and checked too

[@LiloUkulele]

I have a 2" bronze no-hub. I want to connect to 2" copper pipe. What fitting do I use?

[@rickybobby7276]

There is a special copper transition for 2" copper that has a slightly thicker interior diameter.

[@CSJiGSaW08]

Not Correct, You need to use Fernco for any PVC to Cast iron connection. No Hub Couplings between PVC and Cast iron are illegal and will not pass inspection.

[@CSJiGSaW08]

@Joe M Um they are approved from the international plumbing code and Florida Building Code. The ones that might be illegal might be the one with 2 straps and the metal shielding. The standard one with 2 straps is approved....

[@CSJiGSaW08]

@Joe M ive seen the shielding used for cast iron to cast iron connection joints. The fernco can be used to join the waste arm copper drain to PVC inside the walls. the only time you watch out for special adapter sizes is for example clay city pipe to pvc pipe

[@shazadhussain4204]

So no hub couplings are only between cast iron and cast iron? Honest question.

[@CSJiGSaW08]

@@shazadhussain4204 Yes, here in south florida it will not pass inspection. Only for cast iron to cast iron repair.

[@shazadhussain4204]

@@CSJiGSaW08 Thank you

[@pointedspider]

But why are they called no hub?

[@ericgermundson3368]

Because both pipes being connected don't have a hub.

[@song9119]

I have a bunch of 8” inch no hub couplings that I can sell for a good price

[@عرفهعلوان-ي1ظ]

Where is yr location

[@JD-ce4so]

You talk about cast iron pipe, but you ductile iron pipe installation photo, duh!!!

[@captainmigs1655]

That was wack

[@hangyu1161]

We have No-Hub Coupling machine

[@jackofalltrades123]

Anybody else noticed he tried to put a no hub on a the female part of a 45 fitting instead of the male end or regular pipe? Lol thats a rookie move