Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

fast opening valve

fast opening valve

fast opening valve

i need a very fast triggering valve for my gas actuated launcher system. The longest permissible valve opening time for this application is in microseconds but i do not know what type of valve ( thats available in the market ) suitable for this application?

Any suggestions?

RE: fast opening valve

First look at a diaphragm type quick exhaust valve.  Larger ones are available a baghouse pulser valves.  If they will not meet your needs, then read the following below.

The fastest thing that you will find is a pyrovalve, which are used in some aerospace applications.  It is a stricly 1 shot device.  Essentially, it is a rupture disk in a special holder that has a small explosive charge next to the disk.  By triggering the the explosive electrically, the disk is burst in milliseconds.  Many of the major rupture disk manufacturers also make these.  All are custom designs.

Something nearly as fast is to use 2 rupture disks in series, where each has a burst pressure ~60% of the resevoir pressure.  The inner space between the disks is is pressurized to 50% of the resevoir pressure.  When the inner space is vented, both rupture disks quickly fail sequentially.  You can assemble this using standard rupture disks and piping components.  This setup is used on shock tubes which are used to study gas dynamics problems.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close