What is This Sprinkler Pipe Fitting from the 1970s?

7/1/2025

I found this fitting from a system installed in the 1970s.

Everyone I work with and I are unfamiliar with it.

Do you recognize it, and does anyone have any technical information available?

It looks like a 2" coupling with a threaded head outlet on the other side. It is a push-connect type fitting. Thanks!

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11 Comments

Pete H

7/1/2025 06:16:08 am

Maybe a camlock x thread connector?

Pete H

7/1/2025 07:06:19 am

Or an Outlet Coupling.

That seems more likely.

Craig Hanson

7/1/2025 08:07:20 am

its an old Slick Fit

Anthony

7/1/2025 08:23:16 am

My guess would have been "fitt" style but I don't see the friction nuts on it? It's also a hard pass on working on that pipe. If it was me I'd offer a full replace or walk away.

As a rule I don't like to work on systems that have their UL listing written in chalk by what a talented 4th grader (just a joke).

David Kendrick

7/1/2025 08:55:01 am

Michigan Slip fitting.
After installation it “could” rotate from the intended orientation.
To remove there is a handle with a circular shim that slid along the pipe and moved the shim out. A handle for each size of pipe.
I never installed them, had to cut them out and replace with other pipe and fittings.
When we’d disturb a line to repair a leak the adjacent fittings would often begin to leak after refilling the system.
From experience I’d recommend replacing the entire line you’re working on with the goal of replacing all of them.

Louie Lincoln

7/1/2025 09:15:53 am

David is right it. It is a Michigan slip lock fitting. The reason we quit using them is they expanded so if you had 8 sprinklers on a line the would move 1" nocking the ceiling out. If you were using upright sprinklers the would rotate until they were upside down.

Art

7/1/2025 09:56:07 am

I started designing 50 years ago and those are slip fits that were pretty popular in the late 1979's and early 80's.

Jack G

7/1/2025 11:56:04 am

Called an easy tee. I used a lot of them for a while.

Jesse

7/1/2025 02:28:05 pm

Looks like Slip Fit

JON DIMANLIG link

7/2/2025 01:49:35 am

Looking at the fittings, it's a quick connect fittings

Bill Shipman

7/2/2025 01:49:09 pm

Slip Fit's. I have installed a bunch of them. Once the system was pressurized the line looked like a snake. We would put a horizontal hanger on the riser nipple to try to stretch the branch line to hopefully keep it straight. Limited improvement though. Fast to install but absolute junk!

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What is This Sprinkler Pipe Fitting from the 1970s?

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