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My company is starting down the road of getting a water treatment machine NSF 61 certified for use in drinking water systems. Being in charge of the manufacturing facility, I would like to know what requirements we will need to meet to get the certification. Has anyone been through the...

Thanks EdStainless. Vendor discovered their cad model and datasheet are incorrect. The ports are traditional tri clover with the bead groove and angled back.

I am designing a small ancillary water system for a brewery and am using a membrane contactor that has sanitary connections on it. The tri clamp connections with the bead groove are straight forward. However, the contactor also has 4 ports meant for gas flow under a vacuum. Those ports look...

Let me start by saying I am an ME, not ChemE, so please bear with me. My company builds mass transfer vacuum dehydrators for machine lube oil. We use random packing in vacuum towers in all of our designs. Over the years we have always designed round vacuum towers using Sch 10 pipe. The packing...

I am working on the design of a vacuum vessel that is 41" high and oval in cross section. The end radii are 5.75" with a 13" wide mid section. So the ovsl is 24.5" overall length and 11.5" wide. The material is 1/4" thick steel, but haven't settled on the grade yet. We have made many of these...

Thanks for the input. Our ECO's serve to document the what, when, why and who of drawing changes. Sometimes there is too much information to put into the title block, so a person has to reference the ECO to get all of the details. I definitely get not sending all ECO's out with drawings and...

Hello all and Happy New Year! At my first employer out of school we always added ECO's as a sheet to the actual drawing that was being revised. The ECO would be 8 1/2 x 11 with all of the usual information and stayed attached to the drawing forever. The problem I saw was that far too many times...

Thank you jraef. That's exactly what I needed!

For many years, my company has installed on/off SPST toggle switches in the conduit box(peckerhead) of 115V motors up to 1 hp with no reported failures. A man in our shop says there is a code stating that 1 hp is the limit for this configuration. In the past, when we went above 1 hp, we have...

Thanks for all the replies. The customer says they can tolerate some contamination/leaching into the DI water. The process it is being used for does not come into direct contact with the pharma product they are producing. I actually found a polysulfone flow meter from Dwyer that they say is for...

Thanks chengg29 for the reply. Actually ASME B31.1 is the spec quoted by the customer for this valve and it lays out the requirements for diverter valves located upstream of a relief valve.

Hello All! I am working on quoting a system to inject ammonia and/or hydrazine into a boiler makeup water line. The customer has specified that one of the pumps be dual use standby with a diverter valve before the pump relief valve. I'm having trouble finding anyone that is willing to quote a...

Hello All! My employer has started quoting treatment of various gas and water streams that involves the use of deionized water. I don't have any experience using DI water, but understand it is corrosive and a leach agent. A couple of the systems I am laying out are small with low flow rates and...

In case anyone else is still having this same problem, your custom properties not showing up in the Name list in Tab Builder, my solution was a bit different. My workstation had a file called propNames.txt in C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\sldPropertyTabBuilder. Only when I copied...

Thanks everybody! I think we'll try to go with edge welding a piece of flat bar around the curve.

Thanks Mike but I'm about as far from a coast as you can get in the US, Missouri.

Hello All! I've got a 12 ga 304 stainless steel sheet that has one edge cut to a radius of about 140". It's forming the top of an outdoor industrial power unit, so its pretty big. Since it's the top of the power unit, I want to edge roll it down 90 deg to create a 1" high lip to seal out rain...

My company currently fabricates the stainless hydraulic tubing for all of our standard machines right on the assembly line. Looking to reduce costs, I was wondering if our method is typical of medium to high volume manufacturing and if there is a methodology to enabling the use of prefabricated...

I did not ask if I could buy someone's stamp. I did not ask for someone to put their neck on the line after 3 or 4 hours of work. I most certainly did not ask for project or career management advice. What I did ask for is information regarding the going rate for PE consulting in...

My company based in Kansas City is preparing to quote design and construction of an extensive hydraulic system for a civil project in California. Review and sign off by a registered PE in California is required should we win the bid. Can anyone out there share any PE consulting rates for...