3. When the car drives slowly and brakes urgently, if the car vibrates violently, it indicates that there is a problem with the JA type damping ball valve pneumatic ball valve
4. Dismantle the JA type damping ball valve pneumatic ball valve to make it upright, clamp the lower connecting ring on the bench clamp, and pull and press the damping rod several times. At this time, there should be stable resistance. The resistance of pulling up (restoring) should be greater than the resistance of pressing down. If the resistance is unstable or no resistance, it may be that the pneumatic ball valve is short of oil or the valve parts are damaged, Repair or replace parts>Dongfeng environmental protection tenet: adhere to the principle of "product quality is assured and service reputation is satisfied", continue to devote to pneumatic ball valve with new mechanism and new starting point, strive to improve their own quality, enhance market competitiveness, and remain invincible in the pneumatic ball valve industry