Please can someone explain the following...
One of our clients is discovering that eg 50mm dims are either 49.9999999 or 50.0000000002 etc. What causes this and what can be done to fix it? Obviously, if something is actually that long, then it is, but if you draw a rectangle 50x50, then...
As a company, we have families of part no's, used for certain items. I manually change part n's in a parts list to match what we want, then sort the list based on the item no. (part no.). This works OK, unless I have made a mistake and edit an item no. a second time. If the parts list now...
Have I gone blind? Can I just not see stud bolts in the Content Center fasteners section...or are they not actually there? I mean the type suitable for ASME B16.5 flanges, that sort of stud bolt. Flanges are there and I think the heavy hex nuts are too, but I can't see the stud bolts...
We don't use Vault. Each 'job' is created within its own folder on our server. I have 2 new 'things' to design, each very similar to one I've just finished. I planned to create 2 new folders and copy all the files from the original folder into the 2 new ones, then make the necessary changes...
I'm producing a piping spec (for the 1st time, as I expect will become apparent!) and have a question about fittings. I have specified ASTM A234-WPB for the fittings. Is this a material spec or a forming spec? I ask because I have seen mention that A234-WPB 'uses' ASTM A333 steel. Does that...
Hello All!
I'm really struggling to come to terms with various ASTM standards which I'm sure you all know about...
Example: I'm specifying stainless steel (304 type) butt-weld fittings. The geometric standard for these is ASME B16.9 (I hope, or I've got EVERYTHING wrong!). The material...
Somewhere I have seen a document which allowed me to estimate the compressed air consumption of air op valves in a small system. It listed estimated air consumption rates for on-off actuators as well as control type actuators. Of course, now I can't find the blasted doc anywhere! Does anyone...
Apologies if this is in the wrong place, but here goes anyway...
Is there a generally accepted naming convention for pipe specs or pipe classes? I can't find a standard which covers this. I've been tasked to create a number of pipe specs or pipe classes that we can use on future small (truck...
I've been asked to look at using excess flow valves placed into lines before pressure gauges (Bourdon tube type). The idea is that IF the gauge fails, then the valve will close. These lines are really small, 3/8" or 1/4". I don't think it will work. Anybody any relevant experience? Anybody...
Can the ANSI/FCI 70.2 (IEC 60534-4) control valve seat leakage classes be applied to ball valves? Well, OK, yes I know they can, but would a supplier/manufacturer supply/manufacture to such standards? Is there a standard specific for ball valves?
Problem: Trying to find equivalents between US (eg API/ASME/ANSI/ISA etc) and European/International (eg ISO/IEC/EN etc) standards in the areas of pressure piping, material selection, valves, rotating machinery (compressors etc), hazardous areas, electrical wiring etc etc.
Reason: Specifying...
