Everyone always hypes up pneumatic buffer valves like they actually save glass specimen vials from shattering on vertical drops... but let's be real here... 90% of the time maintenance just cranks the exhaust PSI down so hard the canister literally pancakes against the stop gate anyway... I inspected an old 4-inch Lamson rig in a 6-story warehouse last week and the seal degradation on the lower elbow was so bad it had zero backpressure cushion left... you guys obsess over optical diverters while the physics of standard compressed air bounce-back are ruining half the capsules in circulation...