General welding questions that dont fit in TIG, MIG, Stick, or Certification etc.
What's wrong with this picture?
Post Reply
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

This is a 2" SS Goddard "wedge" cryogenic valve with a Kel-F (teflon-related) seal on the wedge.

The valve is sitting against a mirror.
GEDC0571.JPG
GEDC0571.JPG (199.38 KiB) Viewed 1083 times
Top
delraydella
  • Posts:
  • Joined:
    Mon Apr 25, 2011 7:35 pm
  • Location:
    Detroit, MI

I'll guess........

The mounting holes are drilled too close to the ring? :?
Welding☞Syncrowave 250,Millermatic 252,30a Spoolgun Cutting☞12" Hi-speed Cutoff Saw, 9x 12 Horizontal Bandsaw Milling☞Gorton 8d Vertical Mill Turning☞Monarch EE Precision Lathe Grinding ☞Brown & Sharpe #5 Surface Grinder
Top
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

Nope...

The clue is in the mirror.
Top
rahtreelimbs
  • Posts:
  • Joined:
    Mon Jun 14, 2010 10:39 pm

I'll take a stab...........the flow arrow is wrong ???
Top
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

A cigar for you!

It was a casting error. The center plug of the mold was backward at casting. The upstream side of the valve is at the downstream side of the arrow.

Goddard has no explanation.

I'm thinking the mold was assembled by someone with a bad hangover on Monday morning.
Top
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

The "fat" machined seat is the upstream side, machined to meet the plastic seal on the wedge.
Top
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

I cut this valve out today, ground out the flow arrow, stamped in a new one, and installed it correctly.

The sad part?

It's been wrong since 1986, and no one noticed. It gets inspected every five years.
Top
User avatar
  • Posts:
  • Joined:
    Tue Jun 26, 2012 8:05 pm

That reminds me of a girl friend, who walked around all day long with her T-shirt on inside out. Nobody noticed until we sat down in a restaurant for dinner and one of the guests made a remark that her logo was very faint in color. Everyone's attention was now on the T-shirt and she soon realized that she had it on inside out.

So, being the smart blonde that she was, she slipped her arms back into the T-shirt and spun it around. She thought that she had solved the problem, until someone made the remark, that her T-shirt was now on backwards and inside out. She thought about it for a minute, turned bright red and excused herself to correct the problem in the public washroom. It still makes me smile to this day, when I think about her solution to a simple problem.
Top
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

:lol:
Top
User avatar
  • Posts:
  • Joined:
    Thu Jan 06, 2011 11:40 pm
  • Location:
    Near New Orleans

Do people not pay attention?

It's been wrong for 27 years, and this valve gets a rebuild every 5 years.

WTF???
Top
TamJeff
  • Posts:
  • Joined:
    Tue Dec 04, 2012 4:46 am

Otto Nobedder wrote:Do people not pay attention?
One could drive a car in any city and come to the conclusion that. . . no, they don't. Even when theirs and other peoples lives are on the line. Good catch on your part though.
Miller ABP 330, Syncrowave 250, Dynasty 300 DX.
Honorary member of the Fraternity of Faded Tee Shirts.
Top
RonSII
  • Posts:
  • Joined:
    Mon Sep 17, 2012 5:53 pm

Sounds kinda like what I hear in construction alot "it's not MY problem" ie... leave it for the next guy only usually the next guy isn't there...
Top
Post Reply

Return to “Welding Forum General Shop Talk”