A simple solution might be to use a NO solenoid, as you might be able to
spice up the actuator a bit and get the electric closure force stronger
than the spring return force. That might be enough to keep the leaks away.
In a similar vein, are you able to change the orientation of the solenoid
to the vibration? Or is the vibration axis pretty random.
Next option (which I haven't tried) they do make rotary solenoid actuators.
Which you could pair with a ball valve. That should be pretty immune to
vibration. But I can't attest to how reliable they are.
-Wyatt
On Thu, Oct 8, 2020 at 9:59 AM William Claybaugh <wclaybaugh2@xxxxxxxxx>
wrote:
Testing shows that the Lake Axial Solenoid valve in my pneumatic payload
separation system is leaking at 125 psia despite a 1000 psia rating (two
valves tested, both leaked); the leak is through the valve and caused the
latchup of the payload to the vehicle to fail within an average of four
minutes. Additional testing on my vibe table showed latch failure in less
than one minute in ten tests.
Can anyone suggest a solenoid valve good for at least 250 psia and
unlikely to leak under vibration?
Alternative suggestions to using a solenoid valve are welcome.
Thanks,
Bill