Warren Rupp Sandpiper Diaphragm Pump. Model: DSB1-3A. Type: TF-3-SS. Flow rate for new pump is 54 gpm with required horsepower and pressure. This pump can handle solids up to ¼ in. dia. and heads up to 125 psi or 289 ft. of water, and is USDA approved for use with dairy products. Discuss with salesperson your process and product to determine if this refurbished pump should handle your specific duty. Product contact surfaces are 316 stainless steel. (1) 1-1/2 in. S-line inlet. (1) 1-1/2 in. S-line outlet. Overall dimensions: 1 ft. 3-1/2 in. L x 10 in. W x 1 ft. 7 in. H.(ACN74a).