This valve is no longer supplied by ASCo, but they do supply a repair kit that works. After many years they slowly leak air from the supply to the exhaust plenums. Does anyone know specifically why? I am wondering if I can substitute say a viton o-ring in the repair kit and get longer life...
I want a gradual expansion fitting for the outlet of a PRV to reduce back pressure, 2" to 3" NPT. Swage nipples appear to have a large (>10°) included expansion angle. Another idea is an eccentric PVC reducing coupling. (I can use PVC for this.) Does anyone know:
1) Included angles on swage...
Snoop leak detection fluid costs $125.00 a gallon at working strength, Seamtest concentrate costs $0.15 a gallon when diluted to working strength. Does anyone know why? Snoop claims adherance to some specifications, Seamtest does not. Any advice about other fluids or home grown formulas...
On FMEA's, I have concerns about the validity of the Risk Priority Number, determined by multiplying the Severity, Occurrence, and Detection (1-10) numbers. On http://www.quality-one.com/services/fmea.php a problem is presented:
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Determine the order of need for change...
I am looking for a way to have an alarm activate when my compressed air dryer fails. My thought is a simple float that actuates a switch when water accumulates in the bottom of a bowl. Anyone heard of a device like that or some other simple, foolproof method of detecting water in an air line?
Does anyone have any experience with this? I have 10 - 14 PSIG steam and three showers to feed, two of which could be flowing. Everything I find is big, complicated and expensive. Looking for a simple, efficient solution.
We use process steam that cannot have chemicals in it because it humidifies medical products, but condense about 80% of our steam. The black iron condensate lines either get eaten from the inside or plug up with rust. We've replaced short runs with stainless steel with some success, but I...
I want to be able to use "drag and drop" editing to move data in a spreadsheet, but I would like the formulas that access the data to pick the data from the same place.
The application is a project tooling budget by part and by month. When the schedule moves, I would like to simply...
I cut this article out of Machine Design early in my career and it has been a great source of perspective and wisdom. Machine Design graciously gave me permission to send it to Eng-Tips.
Law #1 - Build in enough design margin to counteract the effects of minor manufacturing deviations and...
This article gives a good background for general business ethics; history, cases, philosophy.
http://knowledge.wharton.upenn.edu/articles.cfm?catid=11&articleid=285&homepage=yes
