Waukesha Positive Displacement Pump. Model 55. Flow rate for new pump is 90 gpm with required horsepower and pressure. Discuss with salesperson your process and product to determine if this refurbished pump should handle your specific duty. Features include: stainless steel product contact surfaces, easy disassembly for cleaning, non-galling Waukesha “88” alloy rotors, and 3-A and BISCC approval. Connections: 2 in. inlet and outlet.(ACN77).