Recent content by acfm

Waross, Thanks for responding. The possibility that all three units could start at once does exist.

I felt that this was not the apprpriate place to post my question so I reposted it in Electric Power Engineering. PLEASE FORGIVE ME FOR DOUBLE POSTING! Thanks!

I believe this was inapropriately posted in Electric Motors and Motors Control Engineering so I am reposting it here. FORGIVE ME FOR DOUBLE POSITNG! I have a customer asking for assistance with selecting the correct main circuit breaker for a 10HP 460V triplex vacuum system. Depending on the...

I have a customer asking for assistance with selecting the correct main circuit breaker for a 10HP 460V triplex vacuum system. Depending on the demand, only one unit could be in operation or all three could be operating at the same time. Motor FLA is 14 each (w/0 1.15 SF). Cutler Hammer Motor...

Thanks, TBP! It appears that Dunham-Bush changed their name to Marshall Engineered Products Company or (MEPCO) after someone had purchased their name. Thanks!

Has anyone heard of an old boiler feed pump manufacturer and/or distributor by the name of Dunn and Bush? Have a customer who needs to replace some their pumps and the pumps are so old, there's no data available. The pumps have not been in operation in 15 - 2o years now. Thanks!

I have a vacuum pump system in a plastic extrusion application in which my customer would like the piping(1/2", 1" and 2") to be 316SS. However, all other components in the circuit are carbon steel and brass. I didn't think that this could be done? Can someone direct me to a good reference...

I seem to be missing my Dayco Power Transmission Book! Can someone please provide me with the formula for determining rpm's based on the sizes of the motor, belts, bushings and sheaves? I currently have an old pump system with no informataion associated with it? Thanks!

Can someone advise me as to where I can find EN Standards? I have a vacuum pump Schematic which states that "Dimensions in mm with tolerances according to En775-1995." I'm trying to determine exactly wht the tolerances are. Thanks in advance!

I was wondering if someone could help with a source for some metric couplings? I am looking for 30mm (half or full), the thread pitch is 1.5. I'm hearing that due to the requested size, this may possibly be a specialty? Please help!

zdas04, Thanks for your assistance.

zdas04, Thank you much for your quick response and yes this post is for real. My problem is the "3 million actual cubic feet per hour? Normally this volume would be stated as MCFD and (it is understood to be "standard" conditions). Based on your post, I calculate the...

I deal mostly with liquid ring vacuum pumps and commpressors. I have an gas application in which the following conditions were supplied: suction Pressure: 50 Torr discharge pressure: 900 Torr mw:50 (50% water) inlet temp: 33 deg. C volume: 3 MMACFH (I'm assuming this is actual cubic feet per...

I'm looking for comments (good or bad) relating to powering a liquid ring vacuum pump with a diesle engine using v-belts. Is the choice of v-belts a wise decision or is here a more practical way?

I want to thank Disti and GusD for their quick response. The hazardous location that I am speaking of is Class 1, Div 1, Zones 0&1.