rubber plugs for CO2 tank

[etpools]

I used to work for a swimming pool service company. We would use a CO2 tank with a hose and rubber plug to blow out clogs in lines. Does anyone know where I can get some hose and the rubber plugs? The plugs allow air from the tank through the center of them and they have a compression wingnut you tighten to make it fit securely in the pipe. I cannot find the plugs and I have googled for days. I can find all sorts of rubber plugs and plugs with holes in them, but not the kind that has a hose connector on the top, a wingnut and allow air through the center. any help would be greatly appreciated.

 

[Bama Rambler]

It was probably custom made. You can make one with the proper parts. A bulkhead fitting and a winterizing plug and some drilling.

 

[Ohm_Boy]

What you seek is called a purge plug, and they are commonly used in pipe welding to fill pipes with argon for welding and such. Here's a link - http://www.techsouthinc.com/purge/tspurge.html #disclaimer - I don't know these folks, just found them on the internet.

 

[radefeld]

Nice find! Add that to my bank of random knowledge :-D

 

[etpools]

I knew there was a special name for them. It was bugging me like whenyou know the name of an actor but can't think of it. Thanks so much

 

[Ohm_Boy]

No problem. You might find something by looking for hollow stem test plug, or some such, but I've always known them as purge plugs.