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- Semco RV-02 Stainless Steel Rotary Valve Airlock- Manufacturer: Semco
 - Used Semco Airlock. Item specifics as follows… Model: RV-02 Serial #24467-001-1 Drop-thru style Stainless steel construction Inlet: 9″ x 9″ Outlet: 9″ x 9″ Overall height: 10.5″ Rotor length: 9.5″ Rotor diamete... $4,700 USDWaseca, MN
