Airtrol fitting

[rockycmt]

Can someone explain to me how an airtrol fitting works on a bladderless expansion tank?

Thanks...

[nhmaster]

Not a clue what your are talking about. How about a picture of the thing.

[Furd]

Can someone explain to me how an airtrol fitting works on a bladderless expansion tank?

Quite simply, it doesn't.

In my opinion and also the opinion of many others that have had the frustration of working with the B&G airtrol it is the single worst piece of equipment that Bell & Gossett ever foisted on the world.

NH, try this:

http://www.bellgossett.com/literature/files/599.pdf

[nhmaster]

still not sure what he's talking about but I'll roll on and assume its the tank valve. All it does is allow air to break the vaccuum so that you can drain the tank. If you still have this set-up, do yourself a favor and put a bladder tank in.

[rockycmt]

I just bought a blatter tank to replace my existing one. I was just wonering what I was removing. Since we are on the topic... Should I install an air scoop with my new bladder tank? It is recommended by Watts just wanted to know if it is over kill?

Thanks again...

[Furd]

The ATF tank fitting. Yeah, it is a fancy air vent AND level control of sorts when trying to get the "proper" level of water in a conventional expansion tank. Follow the B&G instructions and learn seven productive methods of pulling out your hair.

Rocky, some systems work just fine without an air eliminator (scoop) fitting, others don't. For the best operation you need several pipe diameters of straight pipe before the air eliminator. Unless you can easily do this I suggest installing the bladder tank without the air eliminator and see how it goes. The best point to connect the bladder tank is before the circulating pump suction.

[nhmaster]

I wouldn't bother with a scoop type air eliminator. They are a waste of time and money. Get a Spiro-Vent and do it right.