... , and distributed horizontally.Components & spare parts lower casing, upper casing, impeller, shaft, wearing ring ect.There are ... The wearing ring are equipped in the lower casing ,and they are convenient to dismantle and replacement ... concave groove on the split surface of upper casing, or through the outer cooled water pipe ... customers'requirement. SH MODEL SINGLE-STAGE DOUBLE SUCTION CENTRIFUGAL PUMP