Hey guys,
Thanks for the feedback. The piping will be supported by a cantilevered steel angle underneath, and the U-bolt will be used to simply hold it in place. It won't be used as a hanger or used in a manner where the U-bolt would take any pipe load. I'm calling out to have the U-bolt fit...
I am looking for standard torque values for U-bolts, used to support pipe, ranging from 1" to 6" pipe. Does anyone have a nice torque table or chart that I could use as reference for this application?
I've been told that you can't get a CSA rated globe valve. I need a 1" CL150 flanged globe valve for low temp service (-45 deg C), medium = natural (sweet) gas.
Has anyone heard of any globes valves like this that are CSA rated? Our preferred vendors are saying no but I thought I would reach...
Thanks guys. Yes sorry, I do realize that a spiral wound gasket is typically installed between flanges and as far as galvanic corrosion issues, it would be the carbon steel hardware touching the stainless that I was concerned about. Thanks for the link for the isolating hardware kits. The...
I have a 3" pipe spool with a carbon steel WN RF CL150 flange (ASTM A105) and it needs to be bolted to a mating CL150 flange made of stainless steel (ASTM A182).
Are there any practices that I should be aware of, to prevent galvanic corrosion, when bolting the two dissimilar flanges together...
This might be a silly question...
I am aware of normal temp (min temp. = -29 deg C) vs. low temp (min temp. = -45 deg C) CARBON steel pipe and fittings, but is there a similar relationship between different types of stainless steels?
From what I see in table A-1 in B31.3, most stainless steels...
Guys, appreciate all the feedback!
We were actually able to order a NPS 1-1/4 x NPS 1-1/4 x NPS 1/2 threaded (FPT) Class 3000 Tee. I guess that even though the B16.11 spec doesn't specifically layout a table of options for threaded reducing tees, Sections 3.2 and 6.5 suggest that it is...
I am looking for an NPS 1-1/4" x NPS 1/2" threaded reducing tee avaible in Class 3000? I know that they are available in class 125, 150, 300, etc. (as per Anvil International catalogue), but I haven't found one in Class 3000. Do they exist?
I also ask because they are not listed within the ASME...
Thank you bimr. I guess one can interpret that excerpt to be the distance required from a road or railway R.O.W., where a person could possibly be standing next to it (although ideally it would never happen).
Thanks again.
"The important thing is to never stop questioning" - Einstein
Does anyone know the distance you need to be away from a road or railroad right of way when hydrostatic testing untested pipe in the field?
Clause 8.7.1.4 of CSA Z662 states that the road or railway needs to be closed during pressure testing for pipe installed at a road/railway crossing. But at...
Hey there. I've seen Teflon used as a substitute for Neoprene on pipe flange-rest supports to permit movement caused by thermal expansion.
"The important thing is to never stop questioning" - Einstein
Gents, thanks for your input.
The reinforcement length of the saddle will be 306mm. From what I know, sag bends or over bends tend to span 1 degree per pipe diameter. So the length of a 1 degree cold bend on an NPS 48 mainline pipe will run for 1219mm.
I am vouching for moving the saddle away...
Thanks.
One more thing, can a saddle be located on a small bend such as a 1 or 2 degree overbend or sagbend on large mainline pipe, lets say NPS 42 or 48 in size? I would think not but not sure if there are any exceptions or allowances. I'm trying to locate an NPS 4 hot tap saddle onto NPS 48...
Does anyone know the minimum separation distance between the edge of a pipe bend and a hot tap saddle? And also the same for between a circumferential weld and a hot tap saddle?
"The important thing is to never stop questioning" - Einstein
I recently reviewed a drawing that contained a flange callout in the BOM and the description for it read as follows:
FLANGE, WNRF, NPS 12, PN 100, TO MATCH: 12.7mm W.T. x Gr. 359, CSA Z245.12, CAT II, M45C
The application was for a meter station with a D.P. of 9930 kPa and a location factor...
Why do we have to specify both the pressure class and the material grade of a butt-welded flange (in particular, a WNRF flange)? It seems redundant to me to call out the pressure class (ex. PN 100) if I'm already specifying the material grade of a flange as well as the matching grade & wall...
