serial# 49217206. Pump features Noryl plastic stages and 316 stainless steel pump shell & housing. Mechancial seal is standard. 1" -21-BF50-1C1-316 construction standard. 200 GPM @ 270 PSI requries 52 BHP. Manufactured by TonkaFlo, Minnetonka, MN. Pump curve available. Motor NOT included.