API Standard High‑Performance Pulsation Dampener Mud Pump Pressure Stabilizer Descirption: Pulsation Dampener, also called discharge air bag,it is installed in the discharge line of a fluid end, and played a role to ensure good steady pressure and pressure compensation . Its working pressure is 80% of mud pump working pressure. F500/F800 mud use KB45 Pulsation Dampener, F1000/F1300/F1600 use KB75 Pulsation Dampener. Notably, when removable pulsation dampener, you must relief