Sockolet dimensions 3

[razzendahcuben]

I am trying to create SolidWorks models of sockolet fittings.

First, I cannot even find a basic definition for a "sockolet." I am assuming this is sort for "socket outlet", which is used to create an outlet in straight pipe where one did not exist before. (Any elaboration or correction is appreciated.)

Next, the catalog with the dimensions uses the following picture:

http://www.gobizkorea.com/att/cat/1999-07531/tp_html/img/1999-07531_cat_5_large_img1_2.jpg

I see that the pipe is inserted into the top and stopped by a shoulder. Below that, the channel appears to widen. Is this what C refers to? If not then what is C? Thanks.

 

[vpl]

You will get a much more focused reply if you post this on forum559.

Patricia Lougheed

Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.

 

[razzendahcuben]

I'm looking for information pertaining to pipe design. What I do with that information (e.g., create a 3D model, make a purchase, write a book, etc.) is beside the point.

 

[hacksaw]

there are so many designs that it is impossible to pick just one design so you frustration is shared.

However there are a few papers dealing with FEA models of such fitting but they are behind subscription/ You may have to resort to catalog drawings as a basis for your dimensional details.

 

[pennpiper]

You said: "First, I cannot even find a basic definition for a "sockolet."

Maybe this will help.

http://www.bonneyforge.com/OletCat.PDF

Scroll down to page 16.

 

[Gator]

"c" is the diameter of the hole cut into the run pipe.

 

[zdas04]

razzendahcuben,
I was going to post a detailed drawing of a Socketolet until I saw your snotty response to VPL. Now as far as I'm concerned you can do it in crayons on toilet paper. She mentioned Solidworks because the first line in your original post mentioned that product.

A lack of grace will put you on my list of people who's threads I simply do not open.

David

 

[razzendahcuben]

David, it is certainly difficult to convey tone in writing and I did not intend to come across as "snotty." I do thank you for pointing this out and I'll try to be more careful in the future.

 

[razzendahcuben]

Pennpiper, Gator: thanks, that helps.

 

[JohnBreen]

Many years ago we had to try to get dimensional data from Bonny Forge for creating an Finite Element Model of several weld-o-let branch connections. It was Nuclear related so we had to do a rigorous analysis and we needed all the dimensions for accurately modeling the geometry. BF told us that the dimensional data was proprietary and that it varied for every pipe size. Our client had to go and buy all the fittings in all the sizes that were to be used and we had to slice them with a band saw to get the dimensions we needed for the FEA model.

Maybe now the data will be available since there is less competition???? Give them a call.

JB

 

[razzendahcuben]

John,

That is exactly what I've encountered during the past month as I try to model everything from elbows to caps to sockolets. What's available is always incomplete, so I'm forced to make up values that "look" good. Looks like that's what I'll have to do again here. Thanks.

 

[Gator]

I'm not so sure. If you don't 3D FEA model the thing down to the nearest 1/10th of a millimetre someone might come after your head.

Where's that smiley icon thingie?

 

[razzendahcuben]

We're not running FEA on these models. They are simply for design purposes. After the piping route is finished a BOM is automatically generated and the parts are purchased accordingly.

 

[Gator]

Whoosh. "Simply for design purposes" sounds a bit dangerous to me. Please don't tell me you're 3D modeling a system just to get a preliminary material take-off. 3D models can have a a magical way of slipping into dangerous territory if not managed properly.

It's all to easy for some to think that the purty picture is good enough. Sometimes misunderstandings, tears and explosions result.

 

[razzendahcuben]

When I say "design" I'm referring to routing. That's what these modeled fittings are used for---routing in the Solidworks Routing add-in. Zero mechanical design work or FEA involved.

These are definitely not pretty models! I don't have time for that and neither does our customer.

 

[Gator]

I'm wondering why Solidworks is being used for this. I've seen vendor models arrive in that format that are so complex (wonderfully detailed bolts, for example) that they bog down the whole system. I could explain more, just trust me, OK?

Piping designers don't need or want to have a complex model of a vendor's amazing product;, we need tie-points, valve handle locations, footprint, general piping routing (to ensure that it fits our overall specs - low points is often a particular annoyance) and that's about it. We'll let you know if we need changes.

 

[JohnBreen]

razzendahcuben

By now you have also discovered that the ASME B16.9 Standard for welding piping fittings really does not "standardize" very much of the geometry of the fittings. The end-to-end dimension, center to end dimension and the "squareness" are standardized but that is it. Also there is no "standard" wall thickness at any point on the fitting - B16.9 fittings are "pressure rated" and the manufacturer must show that their fittings will pass a "proof test". The overall shape and wall thickness are not standardized FOR ANY SCHEDULE of matching pipe (but the thickness at the weld line must be the same as the matching pipe). As a result the various manufacturers provide "standard" B16.9 welding fittings with myriad shapes. For welding reducers the length will be as standardized by B16.9 but the cone angle and wall thickness at any point will vary from one manufacturer to another. For welding tees the end-to-end and center-to-end dimensions are standardized but the rest of the fitting has as many different shapes as there are manufacturers. Some tees are straight cylinder into cylinder in shape, some are barrel shaped and others have a distinct spherical "cheek region". The good news for layout and drafting is that the end to end dimensions are standardized and that allows the implementation of a "library" of piping fittings that be brought into the drawing as "blocks".

Regards, John.

 

[razzendahcuben]

Thanks, John. Yes, my customer informed me that as long as the Center to End dimension is correct he really doesn't care about much else.

 

[razzendahcuben]

(That's not to say that I haven't at least tried to make the fittings look somewhat accurate, which is why I asked my initial question.)

 

[Gator]

You've heard from John (of Breen Droppings fame), you can't get much better than that.