Delta Scientific
Pneumatic Bollards
Federal buildings, corporate headquarters, courthouses, military bases, facilities and other complexes, from airports to seaports, which need to protect people and property, are all proponents and users of Delta pneumatic bollards. Considering power requirements as well as installation, operating and maintenance costs, Delta’s pneumatic bollards are 60 percent more efficient and cost-effective than electro-mechanical units. They are aesthetic, durable, flood-resistant and green; use low voltage and current draw; and provide up to 300 cycles per hour. Customers needing all-weather, crash-resistant bollards are turning to pneumatic designs versus more expensive electro-mechanical devices.
https://www.deltascientific.com/hs_b_tt203.php