What are these quick release air fittings called?

[tommydog35]

I have a pressure gauge for testing engine compression and it has a quick release fitting as shown in the pictures below. Does anyone know what this quick release fitting is called? The same fitting appears on most engine compression testers.

Secondly, does anyone know if you can get an adaptor which would plug into this quick release fitting and on the other end has a schrader valve?

 

[theoldwizard1]

Generically it is called a coupler, but there several different non-interchangeable designs.

A Quick Guide to Air Line Couplers and Plugs

 

[Gew]

https://en.m.wikipedia.org/wiki/Air-line_fitting

 

[tommydog35]

A Quick Guide to Air Line Couplers and Plugs

Thanks for the link. Any idea if I can get an adaptor that will plug into this coupler with a schrader valve on the other end? I want to test a few gauges with my friends tyre inflation machine that only has a schrader valve fitting. Hence I want a quick coupler to schrader valve adapter

 

[Bogie1632]

Something like these?

https://www.homedepot.com/p/Milton-...DRonJfUmiOwNa6LE3FoaAvtDEALw_wcB&gclsrc=aw.ds

There are male and female versions available.

V/R
Bogie

 

[metaleltr]

Thanks for the link. Any idea if I can get an adaptor that will plug into this coupler with a schrader valve on the other end? I want to test a few gauges with my friends tyre inflation machine that only has a schrader valve fitting. Hence I want a quick coupler to schrader valve adapter

Your best bet may be removing the fitting and using standard pipe fittings to adapt it to schrader.

 

[bob15]

Not really sure on the first picture's black fitting, but the other coupling are somewhat close to what Dixon Valve's A-series. You might also look at Parker.

1/4" body (scroll down to the catalog pages and click on them): https://www.dixonvalve.com/product/2AM1-B

1/8" body: https://www.dixonvalve.com/product/1AM1-B

 

[Shadowdog500]

I use a Milton A series and that is not an A series coupler.

Here is a table that shows the different coupler profiles. https://www.google.com/search?q=mil...59#imgrc=RR5-mYyaNEiCVM&imgdii=Fq1O9ka0aGR3iM

I’d does not appear to be any of those. What is the coupler off of?

 

[mikeky]

Rectus 21?

 

[rlitman]

I use a Milton A series and that is not an a series...
I’d does not appear to be any of those. What is the coupler off of?

Agreed. to me, it looks like the hydraulic coupler found on pressure washers.

 

[The Cobbler]

Rectus 21?

you might be on to something

 

[tommydog35]

What is the coupler off of?

The coupler is off a Diesel Engine Compression test kit. If you search Amazon for Diesel Engine Compression test kits and you will see all the generic Chinese kits use that type of coupler.

 

[tommydog35]

Rectus 21?

Thanks for your suggestion, it does look very similar. Is Rectus 21 common around the world? Do they typically use it in China? If you are wondering the coupler is off a Diesel Engine Compression test kit. If you search Amazon for Diesel Engine Compression test kits, you will see all the generic Chinese kits use that type of coupler.