Contact US

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

application needing proper valve

application needing proper valve

application needing proper valve

Hi everyone I am a newbie here and was wondering if I could some ideas about this situation I have. The hydraulic problem I have is my hydraulic pump puts out 40 gallons a minute and the cylinder has a 5 inch bore with a 4 inch shaft with 32 inch stroke. The extend cycle is no problem however on the retract cycle It lugs down the motor. I did calculations and It should retract the cylinder In 1.5 seconds.So the amount of flow coming out of the extend port is around the hundred gallon mark. This of course is way to much for my 45 gpm spool to handle hence the lugging of the motor.  So I'm trying to figure out a way to dump that large amount of flow in a quick manner. The hydraulic pump produces up to 2250 PSI. I imagine I will have to drill and weld another hydraulic hose port fitting of a large diameter on the back of the cylinder and whether a Pilot operated check valve or some other valve will hopefully work. There is no work load on the return cycle. If there is a solution for this problem I have another hydraulic cylinder on the same machine that will need the same solution.  However it is a 6 inch bore with a 3 inch shaft. 



RE: application needing proper valve

Hi everyone I forgot to mention that I can purchase a electrical hydraulic solenoid that can easily handle the flow but I would prefer to have something that is activated by the hydraulic power already there instead of having to add a electrical power system to it as well.
Thanks Aaron

RE: application needing proper valve

If you're still in need of assistance - Kee Connections will be able to assist - Check Valves

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


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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