Valve Fatigue Cycling Help
Valve Fatigue Cycling Help
(OP)
Hello,
I am trying to devise a system in which I can cycle a small valve using a liquid (probably water) at a high frequency (20-50Hz). The problem is that I would like a closed system and be able to supply a back pressure to the closed valve up to 35 psi while allowing the fluid to circulate to the upstream side of the valve which will be temporarly at a lower pressure. The system will be displacement driven by use of a piston.
Also, does anyone have any idea or links to how valve companies fatigue test their valves? That might help.
Thank You.
I am trying to devise a system in which I can cycle a small valve using a liquid (probably water) at a high frequency (20-50Hz). The problem is that I would like a closed system and be able to supply a back pressure to the closed valve up to 35 psi while allowing the fluid to circulate to the upstream side of the valve which will be temporarly at a lower pressure. The system will be displacement driven by use of a piston.
Also, does anyone have any idea or links to how valve companies fatigue test their valves? That might help.
Thank You.





RE: Valve Fatigue Cycling Help
http://virtualpipeline.spaces.msn.com
RE: Valve Fatigue Cycling Help
A small valve can usually be operated with a solenoid, should be simple to setup.strobe light with light sensor to single board computer that reverses solenoid action at 0 and 90 degrees, and ccounts number of cycles. Speed is not relevant, but stress on the actuator may be.
RE: Valve Fatigue Cycling Help
Thanks
Patricia Lougheed
Please see FAQ731-376: Eng-Tips.com Forum Policies: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.