Thread: Vacuum Valve
View Single Post
  #13   Spotlight this post!  
Unread 21-01-2007, 10:51
Andrew Blair's Avatar
Andrew Blair Andrew Blair is offline
SAE Formula is FIRST with Gasoline.
FRC #0306 (CRT)
Team Role: Alumni
  
Join Date: Feb 2005
Rookie Year: 2004
Location: Corry
Posts: 1,193
Andrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond reputeAndrew Blair has a reputation beyond repute
Send a message via AIM to Andrew Blair Send a message via Yahoo to Andrew Blair
Re: Vacuum Valve
I did. Kinda.

Direct Acting Valve?


01-18-2007, 03:00 PM
FRC306 vbmenu_register("postmenu_3519", true);
Junior Member
Join Date: Jan 2006
Posts: 1


Direct Acting Valve in Vacuum?
We have a direct acting solenoid valve rated for 100 psi that we wish to use expressly in our vacuum loop.Though not rated for 125 psi, it is more than adequate for the vacuum it will be operating in. Is it acceptable to use?


FRC306
View Public Profile
Find all posts by FRC306
Add FRC306 to Your Buddy List


01-19-2007, 09:52 AM
GDC vbmenu_register("postmenu_3656", true);
Senior Member
Join Date: Jan 2006
Posts: 609


Re: Direct Acting Valve in Vacuum?
No. Under Rule <R105>, all "off the shelf" pneumatic devices must be rated for at least 125 psi. There is no exception for devices that are used for vacuum applications.


What this implies is that any off the shelf pneumatic solenoid valve (meaning used to control the flow of air in a mechanical system, not provide mechanical actuation directly), may be used so long as it is rated to 125 psi. A direct acting valve serves the same role as a piloted valve, just with more power draw.

Too bad we can't use the one we have laying around though...
__________________
Reading makes a full man, conference a ready man, and writing an exact man.
-Sir Francis Bacon

"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction."
-Albert Einstein