User Rank
The real point
Medvezhonok   1/16/2014 4:50:03 PM
Seems to me this article was little about valves and much about engineers. Engineers have to be able to take the heat and pressure. There are different types and sizes for different applications. It's important to choose the right one. Quality is important.

Great article!

User Rank
Re: {Purpose of article ?
TunaFish#5   1/16/2014 9:46:57 AM
@GlennA -

I think this article is part of a program to develop bullets for a post-entry-level resume.

Note the bio info:  "worked for ... for more than five years and takes pride in sharing his rich experiences in this field..."

I don't discredit anyone's 5 years of work, but I'd hesitate to call that experience rich.  Nor am I saying the author's not qualified on the topic, but the discussion does need to be developed beyond ENG-101.


User Rank
Re: an important component
ragtoplvr   1/16/2014 8:49:11 AM
Does and editor read these before posting or can any badly written useless article get published.

Useless waste of my time. 

English is this posters second language.




William K.
User Rank
Re: {Purpose of article ?
William K.   1/16/2014 8:48:39 AM
I also wonder a bit about the purpose of this article. Not that it contains any errors, but what is the massage that it intends to deliver.

I find that ball valves are a very good choice for most applications for several reasons. Fully open they do have the lowest pressure drop, and fully closed they are not likely to leak. They have an additional advantage of clearly showing if they are open or closed, and when open they are quieter than most other kinds of valves. Ball valves are not a good choice for throttling applications where fine control of smaller flows is needed, in fact a ball valve used for flow control is very non-linear and likely to lead to instability if it is in a closed loop servo control application. So they don't fit everywhere, but they are a fist choice for many applications. Once again it is clear that a system designer does need to understand the individual parts of the system in order to get the desired performance at the best price.

Not really an unexpected conclusion, is it?

User Rank
{Purpose of article ?
GlennA   1/15/2014 2:20:07 PM
What is the purpose of this article ?  There is very little technical information, and the content doesn't match the title.  Is it just supposed to be a sales pitch ?

User Rank
an important component
naperlou   1/15/2014 12:44:44 PM
Kevin, devices such as these form an important component in many systems that feature fluid flow.  In talking about 3D printing and advanced electronics we sometimes forget that there are lots of other components that make the things we need work. 

Partner Zone
Latest Analysis
Designers of electronic interfaces will need to be prepared to incorporate haptics in next generation products, an expert will tell attendees at the upcoming Designer of Things Conference in San Jose.
According to a Randstad Engineering compilation of salary studies, engineering salaries are increasing beyond inflation, with employers paying to keep potential suitors away from their employees.
The company says it anticipates high-definition video for home security and other uses will be the next mature technology integrated into the IoT domain, hence the introduction of its MatrixCam devkit.
Siemens and Georgia Institute of Technology are partnering to address limitations in the current additive manufacturing design-to-production chain in an applied research project as part of the federally backed America Makes program.
Most of the new 3D printers and 3D printing technologies in this crop are breaking some boundaries, whether it's build volume-per-dollar ratios, multimaterials printing techniques, or new materials types.
Design News Webinar Series
11/10/2015 11:00 a.m. California / 2:00 p.m. New York
10/29/2015 11:00 a.m. California / 2:00 p.m. New York
10/20/2015 8:00 a.m. California / 11:00 a.m. New York
12/2/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jul 6 - 10, Building Raspberry Pi Controllers with Python
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7

Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service