Attenuating device for valve assembly

A valve assembly, comprising:

• a valve having a seat and a plug that is configured to move a first distance relative to the seat;
• an actuator coupled with the plug, the actuator comprising a housing with a diaphragm disposed therein;
• and
• an attenuating device disposed in the housing of the actuator, the attenuating device having an input member and an output member, both being configured to translate in response to movement of the diaphragm, the attenuating device comprising a pair of resilient members and a first disc, all found entirely within the housing and arranged linearly relative to one another and interposed between the input member and the output member, the first disc disposed between the pair of resilient members so that the pair of resilient members contact opposing sides of the first disc, respectively, each of the pair of resilient members being configured to deflect in accordance with an attenuating characteristic for the attenuating device that reduces a first displacement of the input member to a second displacement of the output member that is less than the first displacement,
• wherein the second displacement corresponds with a measured value for a position of the plug at the first distance.