High-Pressure Vortex Ring Regenerative Blower for Sewage Aeration Aquarium Fish Pond Oxygenation Phase Side Blower Phase,This high pressure blower is equipped with a copper coil high efficiency motor, cold-rolled silicon steel core, and high temperature sealing bearing, effectively reducing working temperature rise and guaranteeing the sustainability of operation. The precision clearance between the cavity and impeller makes the air medium stable with pressure output. Advantages include an air duct port with a filter barrier, 100% copper coil, fireproof and corrosion-resistant material that never rusts, and a built-in silencer sponge in the air duct. Specifications: name: industrial vacuum pump; material: aluminum; color: silver; voltage: 380V (three-phase); motor speed: 2800 rpm/min; power: 250W/350W/550W/750W/1100W/1500W; airflow: 48/50/85/100/145/210; weight: 9/10/15/19/20/26; installation method: horizontal or vertical installation. Packing list includes 1 high-pressure regenerative blower. Excellent service: As a professional international seller, customer satisfaction is our top priority. If you have any questions about our products, please contact us via email. We will respond as soon as possible.