Oscillating Valve Damping

Poppet and check valves can naturally resonate, causing unwanted noise, pressure/flow fluctuations, or wear. These problems can be eliminated by precise damping.
Application Examples

In pneumatic valves (as shown below), an Airpot reduces the amplitude of oscillation without affecting the cracking pressure or positioning of the poppet. With Airpot’s low mass, virtually frictionless motion, and minimal air spring at low forces, the steady-state positioning of the poppet is essentially unaffected by the dashpot.

In a vacuum regulator it improves regulation and eliminates noise caused by the oscillating poppet striking the valve seat.

In a patient ventilator it damps the check valve to eliminate downstream pressure fluctuations.

oscillating_valve_damping

QUICK SELECTOR

To View the Best Model’s Data Sheet: In the chart below CHOOSE a Damping Direction and CLICK on a Model that offers a force equal to or greater than the MAXIMUM Force in your application.

FORCE CAPACITY GUIDELINES**

MODEL 2K56 2K95 2K160 2K240 2K325 2K444
BORE (inches) 0.22 0.366 0.627 0.945 1.281 1.75
PULL DAMPING DIRECTION lbs force
(Starting from fully retracted position)		 0.5 1.4 4 9 17 30
PUSH DAMPING DIRECTION lbs force
(Starting from fully extended position)		 0.35 1 3 7 13 24
**Note: Best performance for each model will be achieved at or below input forces shown above. Maximum force capability is higher and is based on % of available volume displaced.

MORE DETAIL

Click here to learn more about Force.
Click here to learn more about damping coefficient.
Click here to see specifications summary for all models.