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I'd like to get the pro and cons about BUNA-N (Nitrile) and Natural rubber for use as a gasket material on water and air. Albion is recommanding natural black rubber for water (hot & cold) and also for air. Albion also do ot recommand Nitrile for sunlight,ozone and weather... My applications...

Hi there, I'm looking to find information about a Company named "Elliot" who was manufacturing flexible shaft actuator for valves in the late '70s.... Or If you can redirect me on a cie who manufacture that kind of product it will be appreciate. The actuator I'm looking for is a kind of...

Hi there, I'm looking to find the friction coefficient for steel on steel with a water film between . Any references ? Thanks

My question is regarding ANSI B1.20.1, article 4 ''SPECIFICATIONS FOR INTERNAL STRAIGHT THREADS IN PIPE COUPLING' NPSC.'' - Does that means coupling internal threads are straight threads (NPSC)? - Or that means it can be possible for some applications? - If it is used on some applications I...

My question is regarding ANSI B1.20.1, article 4 ''SPECIFICATIONS FOR INTERNAL STRAIGHT THREADS IN PIPE COUPLING' NPSC.'' - Does that means coupling internal threads are straight threads (NPSC)? - Or that means it can be possible for some applications? - If it is used on some applications I...

Hi guys, I would like to know from past experiences if anybody has succeed in fixing a non-pressure retaining part on a vessel working at high temp. as 510°F on steam (i.e. baffle plate or something like) with a product like Hi-temp Lab Metal from Alvin products? Or maybe you have experienced...

I need to find a table giving the sch40 and 80 BW fitting's volume. Is this existing? Thanks Nukie

Does WPB stand only for ASTM A234 ? I'm asking because ANSI B16.9 fitting are only marked WPB, they were ordered A234 gr WPB but how can I be sure it's A234 the only way it is OK is if they is no other materials with this grade ?

I would like to know how to calculate the delta T for gaseous nitrogen when I depressurize it thru a regulator, let say the cylinder is at 2500psi and the output of the regulator is 125 psi. Any formulas and references are welcome Thanks

I would like to know if the torque applied to the Tie Rod spherical washer nut of a joint who is installed for flanges misalignment purposes has an impact on how the joint will works ? As I understand this, if the nut on spherical washer are loose, the joint will have less rigidity and will be...

I'm hardly looking for the B16.5-1968 anyone could help ? regards

HI all , I have a question regarding the rating for class 150 According to B16.5 1977 the pressure for @200deg is 195 psi According to ASME SectIII Addendum S or W74 (which refer to B16.5) the pressure for @200deg is 240 psi It seems to had change after 1974 and before 1977 Anyone can...

I'm looking for a copy of the scope of ASME B31.3 Is it possible to get it online or by e-mail ?

Is there a section of ASME covering the design and fabrication of bellows expansion joint or every manufacturer are fabricating to EJMA standard Thanks

What is the difference between ASTM A105 and ASME SA105 ??? Thanks for you time

I am a little confused about the bellows expansion joint spring rate. What really is the ANGULAR spring rate? Does a Lateral movement affect or create an ANGULAR movement? Thanks for your time

I am a little confused about the bellows expansion joint spring rate. What really is the ANGULAR spring rate? Does a Lateral movement affect or create an ANGULAR movement? Thanks for your time