Hydrovane 27-27ck, 33-33ck, 43-43ck Manual Hydrovane Rotary Compressors 27-27ck, 33-33ck, 43-43ck. Operator's Instruction, Service Manual and Parts Manual with Electrical Schematic. Manufacturers: Hydrovane Models: 27-27ck 33-33ck 43-43ck Contents: Operators Manual Maintenance Manual Parts Manual Electrical Diagrams