Expansion joints and Anchors for steam distribution.
Expansion joints and Anchors for steam distribution.
(OP)
I need to establish a standard for expansion joints and Anchors for steam distribution application, for pressures up to 250 psi. Currently, we use HYSPAN slip-type expansion joints, I don't want bellows for this application. I need as much opinion as possible, with the relative merits of HYSPAN and other joint manufacturers.
I always like to seize the advantage of your valued experience.
I always like to seize the advantage of your valued experience.
We deliver steam as if your life depends on it.





RE: Expansion joints and Anchors for steam distribution.
rmw
RE: Expansion joints and Anchors for steam distribution.
RE: Expansion joints and Anchors for steam distribution.
RE: Expansion joints and Anchors for steam distribution.
I was at a power plant in Texas last year that had about 2 miles of 30" 800 F steam piping to a neighbouring steam host. Looked like an inch worm creaping across a field with all the vertical expansion loops.
RE: Expansion joints and Anchors for steam distribution.
I use a company called engineering appliances in the uk who believe it or not try to solve your expansion problems without selling you an expansion bellows. Sounds like negative selling but it works quite well..you also know that the solution they come up with is professional and justified rather than just to increase their profit margin.
they have a web site also.
good luck
ps there is also some good info in CIBSE guide book B (brown guide) which shows you how to allow for natural expansion with hints on guiding and bracketting the pipework etc.
Friar Tuck of Sherwood
RE: Expansion joints and Anchors for steam distribution.
RE: Expansion joints and Anchors for steam distribution.
There's a contradiction in your reply."Only use bellows in the ultimate case that you don't have room for expansion bellows". But I know what you meant to say "Only use bellows in the ultimate case that you don't have room for expansion LOOPs."
Agree with all of the posts. We have around 28km of steam pipe on our site which was installed from anywhere up to 50 years ago. Lines range from 20"nb to 43"nb. In the past the designers have used "GunPakt" joints (Slip-joints), Axial bellows and in some case lateral bellows to accommodate the expansion. All give problems with failures. The only systems that we do not have many problems with are those utilising expansion loops.