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Hi All, Maybe a stupid question, but are there surface finish callouts for molded rubber parts? I know of the ARPM mold finishes F1 thru F4 but wasn't sure if that transferred to the molded part surface finish as well. TIA, Q~

thanks Steve. EdStainless, i just messaged you on linkedin

thanks dik! @EdStainless, can you please let me know how to get in contact with you for some consulting work?

Hi All, Can anyone recommend a good Consultant to work with me on solving a few issues we are having? TIA, Q~

Hi All, Any idea who made this valve? It came in from the Aero Vintage Academy in France and they are asking us. TIA ~Q https://files.engineering.com/getfile.aspx?folder=37cebbe5-434e-480c-921c-65c2a22d2876&file=valvepic3.JPG

thanks, guys!

I have a friend who’s graduating BTI also known as Berks technical institute at the end of November and he is in the electrical program and has a GPA of 4.0. Does anyone know of any good electrical apprenticeship opportunities in the Lancaster/Ephrata PA area where he can apply? TIA Q~

Hi All, Can anyone recommend reputable ones? Mainly round stock turning parts from 1/8" up to 3" Dia. Located in the NorthEast if that matters.... TIA ~Q

Sorry guys, some clarification: Tug - largest size would be 1" NPT (thanks for the link) Pedarrin2 - nominal temp ~140F and 180F for disinfection. Or the use of chemical (Chlorine Dioxide) Working pressures would typically be 50 - 80 psig but am concerned about structural integrity (hence...

Hi All, Can anyone recommend a plastic or range of plastics for use as a potable water commercial plumbing valve body / internals that can accept the stress of NPT connections and water pressures up to 200F @ 150 psig? We were considering PVC, CPVC, PE, PEX, PE-RT, PP, SP, ABS, and 30%...

Thanks everyone.

Thanks everyone, yes, very familiar with Swagelok fittings but never thought to use it here. also never tried 577 but willing to see if there's an improvement.

Hi Ed, Saturated steam up to 150 psig 366F that is used ~ 8 hrs / day then shut off overnight and left to cool off. we can add traps to the line ends to keep the line near 200F if that helps in reducing the huge temp swing to within 166F.

Hi All, We're experiencing leaking pipes - mainly in the 304 SS material - at the threaded connections over time as the piping is exposed to thermal cycling between 338F and room temp daily. We have tried Loctite 567, Rectorseal, X-Pando and MegaLoc sealants but all have eventually leaked...

thanks everyone!

georgeverghese, that's exactly what i'm looking for. can you cite any references?

Thanks again everyone. I really appreciate the help!

No, not an NFPA installation - I was just quoting from their Standard and it made me wonder if there were any online calculators that could estimate the minimum continuous thermal flow for a given pump setup. Here's what i found...

thanks, guys - i really appreciate all the help!

Hi All, NFPA 20 4.13.1.4 states “The valve shall provide sufficient water flow to prevent the pump from overheating when operating with no discharge”. Does anyone know where I can find the equations or an online calculator to quantify the required flow for keeping an idling centrifugal pump...