Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Ball Valve with Extended Stem

Ball Valve with Extended Stem

Ball Valve with Extended Stem

I am trying to find manufacturers of a bronze body ball valve (nothing fancy; 300 psig WOG HVAC service) that offer extended stems.  Ideally, I would like to find not only an extended stem, but an extended body around the stem, so that I can seal my insulation to the body just below the handle.  Apollo offers extended stems, but not an extended body.

My problem is that when using standard ball valves in chilled water service, if they need to be operated with any frequency, it is almost impossible to maintain a vapor barrier around the stem region.

I'm posting this on the HVAC forum as well. Any suggestions would be greatly appreciated.


RE: Ball Valve with Extended Stem


Problem is well known. An extended stem only will
have the problem that it will turn in the insulation,
if operated.
So you will need an extended stem with a protection tube
around the stem, protection tube is attached to the valve.

We made this several times, only thing you need is a valve with a mounting pad/topflange.

There are no valve manufacturers, as far as i'm aware, that make this extension.

RE: Ball Valve with Extended Stem


Thanks for the help!


RE: Ball Valve with Extended Stem

Wabtec Corporation makes custom ball valves for railroads and industrial uses.

We can adapt our valves to fit just about any customer's needs.


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close