EMT Push Fittings

Status
Not open for further replies.
S

sparkproof

Member
Location
Maryland
Occupation
Electrical Engineer
I designed a project with an EMT spec allowing either set screw or compression fittings for the EMT conduit. The contractor is proposing using push fittings, which I've never run across before. They are UL listed. What's the community's experience with push fittings?
 
I've never used them, but I would not be pleased if a product submittal was denied that met all criteria.

I had a talk with some of the guys here last week about how the #1 issue I have when we run pipe is that I'm constantly finding fittings where either the screw isn't set, or the compression nut isn't tightened and it drives me absolutely crazy. After looking over these Bridgeport push-in fittings, and unless someone just absolutely screws up, it seems to be a more foolproof way of ensuring continuity in the raceway system.
 
When I was in QC I was the same way, drove me nuts to find loose setscrews, compression rings and lock nuts.
The bad part was they KNEW that is what I looked for!
 
Last edited:
I am going to review this fitting as I have never seen one. The others guys may just like them to keep me from complaining. Maybe complaining is not the right word.

I would like feed back from any one that has used them.
 
They are like sharkbite fittings, not water tight of course. I bought a box of them one time. They are easy to use but the toothed ring that holds the pipe doesn't tighten down on anything so they are very floppy / saggy. Even with extra strapping they make it hard to keep a pipe run straight.
 
jaggedben said:
I hate any fitting that doesn't come out the same way it went in.
Click to expand...
They have a removal tool like sharkbites and is very easy to use. I've used them a couple times on 3/4 inch rigid and imc and liked them. I think set screw are the best fitting and the easiest to verify it's installed correctly but these are real hard to mess up.
 
I used these for a diy project in my home. So very limited experience.

My experience was almost the opposite of post #6. The fittings were too snug and I couldn't be sure that they had seated correctly.

The fittings have a shark bite toothed ring and then a straight sleeve section. I found that the EMT was binding in the sleeve section rather than fully seating.

My guess is that I was dealing in the opposite end of the tolerance range, @ActionDave probably had EMT on the small end of the tolerance range so the fittings were floppy, I had EMT on the large end of the range so it didn't fit well.

Or perhaps I flattened the EMT a bit when cutting it.

My recommendation is that if these fittings are used, that a procedure be required to verify that the EMT is fully seated and properly gripped.

Jon
 
hbiss said:
This thing? What's the compression nut for???
Click to expand...
Apparently the raintight push-on EMT connectors have that nut and it's removed for disassembly. For assembly, the nut comes from the factory hand tight and you just push the connector on the deburred EMT end.

Mighty-Seal® Push-EMT® Raintight Connectors

The 250-MSRT installation is accomplished by inserting a properly deburred end of EMT into the end of the Mighty-Seal and slightly rotating the UL listed fitting until the conduit reaches the end stop. Removal is accomplished by loosening the nut and rem
www.bptfittings.com www.bptfittings.com

That contrasts with the dry location fittings, which don't have a nut and say to push on for assembly, screw off for disassembly.

Cheers, Wayne
 
winnie said:
I used these for a diy project in my home. So very limited experience.

My experience was almost the opposite of post #6. The fittings were too snug and I couldn't be sure that they had seated correctly.

The fittings have a shark bite toothed ring and then a straight sleeve section. I found that the EMT was binding in the sleeve section rather than fully seating.

My guess is that I was dealing in the opposite end of the tolerance range, @ActionDave probably had EMT on the small end of the tolerance range so the fittings were floppy, I had EMT on the large end of the range so it didn't fit well.

Or perhaps I flattened the EMT a bit when cutting it.

My recommendation is that if these fittings are used, that a procedure be required to verify that the EMT is fully seated and properly gripped.

Jon
Click to expand...
I bought them when they first came out so there may have been some changes in tolerances.
 
Status
Not open for further replies.
Top