All:
Finally found out that indiviual code cases can be purchased from the National Board. Code case 2547 is probably the shortest in existance (one paragraph, two sentences). Basically says if successful service experience or U-2(g) is satisfied, alternatives for the design of flange...
EnergyMix
Thanks, I understand your position. I cannot get Joe at ASME to return my calls or emails, not sure why. An "expert" at IHS says I have to buy the complete set of Code Cases to get just one (~$500), and they could not tell me what year set to even buy. I suppose I can try again...
As near as I can tell, code case 2547 is still active/applicable. TRUE??
I cannot find any posts anywhere less than five years old, but its not shown as killed on the ASME webpage.
Can anyone tell me what the actual exemption language is? I understand its a very short code case. The...
All:
For over 20 years, and as recently as several months ago, we have been getting large (16,000-27,000 ft^2) code stamped process heat exchangers for PET plants with one tubeheet integral to shell and channel, and the other tube sheet integral to shell and extended as flange.
So far, no...
Yes, it takes some sophisticated equipment for measuring this given the highly distorted waveform. However, vendors (more than one) have told me that what the VFD itself reports as output for amps and volts, at the cabinet display, is pretty accurate. Never thought to question that further...
Thanks all, the paper link is by far the best I have ever found on efficiency. I would be very grateful if any more data like this is found, especially at the higher horsepowers, and also treatises on PF. I wish they had published the 100 hp case...perhaps I can contact the author.
David...
Hello all:
Bit of intro: I am a gyro gearloose (mechancal) as opposed to a wireloose, but I have a lot of past experience in controls/electrical design/analysis etc, so if the reply is not too technical, I can probably follow.
A source of great frustration for me for several years has been the...
Thanks guys...good info to have.
CoryPad: Before I launch into aquisition mode, do you remember if the article had any additional details that would be useful to purpose, or did it just baldly state equation?
Thanks again
thread404-200026
Can anyone tell me how to get a copy of the old:
CASE, G.S. "Stresses on bolts-nut dimensions-wrench design, Mechanical Engineering, Sept 1927, pp919-925.
I would like to see if there is any additional treatment of the geometry fit factor CH in the torque equation...
Can anyone help me with design guidelines/calculation info for a shaft reverse screw "seal"?
Application: Threads on a rotating shaft, comprising "seal" or "excluder" in conjuction with the OD wall of stationary through sleeve or bore. These are inboard of a mechanical seal. Thread end and...
On re-reading my post, I thought some clarification was in order. (Have also uploaded sketch):
Application: Threads on a rotating shaft, comprising "seal" or "excluder" in conjuction with the OD wall of stationary through sleeve or bore. These are inboard of a mechanical seal. Thread end...
Can anyone help me with design guidelines/calculation info for a shaft reverse screw "seal"?
Application: Threads on a rotating shaft, comprising "seal" or "excluder" in conjuction with the OD wall of stationary through sleeve or bore. These are inboard of a mechanical seal. Thread end and...
Can anyone help me with design guidelines/calculation info for a shaft reverse screw seal?
Application: Inboard of mechanical seal, end flush with inside of polycondensation PET reactor, one end about 80-160 centipoise, other end about 2000-3000 poise, near vacuum (2mm Hg) in reactor. Screw...
Hplogger:
JLu is correct in the standard value for ASME Flange calcs for this product. You do not give the service, but since you are using moderate size std flange at not too high of # rating, this should be ok.
FYI, be aware that you can actually specify Y to a manufacturer...it depends on...
