×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Hydralic spool valves

Hydralic spool valves

Hydralic spool valves

(OP)
Hello
I am trying to learn more about hydraulic spool valve center conditions.  I am trying to find out what is the intended purpose for using a float type center condition spool valve.

RE: Hydralic spool valves

A "float center" spool has both cylinder ports vented to each other and to exhaust, with inlet pressure blocked, in center position. This relieves pressure block on both sides of the cylinder position, alowing piston rod to be moved manually, or to be freely pushed and pulled by a moving member of the machine to which the cylinder is attached. This "floating" action is occasionally used on both air and hydraulic systems.

David Baird
mrbaird@hotmail.com
Sr Controls Designer
EET degree.
Journeyman Electrician.

RE: Hydralic spool valves

Also, a FLoat Center is often used with a hydraulic motor so it can coast to a stop to eliminate shock when stopping rotation.

It is imperetive when using Pilot OPerated Check Valves or Counter Balance Valves to eliminate pressure when the action of a cylinder or other positively seald device must be stopped and held in position and the pump supply must be available for other circuits.

Bud Trinkel CFPE
HYDRA-PNEU CONSULTING, INC.
fluidpower1 @ hotmail.com
http://www.fluidpower1.us

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!


Resources