Waukesha Model 320 Positive Displacement Pump. Model: 320. Flow rate for new pump is 450 gpm with required horsepower and pressure. Discuss with salesperson your process and product to determine if this pump should handle your specific duty. Maximum pressure: 200 psi. Maximum speed: 600 rpm. Temperature range: -40ºF to 300ºF. 316 stainless steel pump body, cover and shaft. Features include: ease of cleaning and disassembly, and non-galling, Waukesha 88 alloy rotors. Inlet/Outlet: 6 in. ANSI flange. (ACN303).