2 x Allweiler NTT65-250 U5A-W4 hot oil pumps. These pumps are designed primarily for heat transfer applications, especially handling organic thermal oils (hot oil) at high temperatures. Pumps were previously used on a thermal oil heater. Performance and Operating Limits Flow rate (Q): 150 m³/h Head (H): 73m Temperature: Up to 350°C for thermal oils. A self-cooling design (no external cooling needed for the seal/bearings in many configurations) makes it ideal for hot oil circulation. 3 Phase, 45kW, 80A, 400V, 50Hz Electric Motor. 3\`` Suction & 2.5\`` Discharge. Key Features and Design Single-stage, end-suction centrifugal pump with axial inlet and radial discharge. \``NTT\`` designation: Indicates the thermal oil variant of the broader NT series. The \``TT\`` emphasizes suitability for high-temperature heat-transfer fluids. 65 - Nominal discharge nozzle diameter: DN 65 mm 250 - Nominal impeller diameter: 250 mm. U5A - Shaft seal: Uncooled, unbalanced mechanical seal with a safety (backup) stuffing box arranged in front. This is a standard, self-cooling design for high-temperature thermal oil service-no external cooling is required for the seal or bearings in typical applications. It includes a heat barrier to protect the seal from extreme temperatures. W4 - Material combination: Typically cast iron for the volute casing, casing cover, and other pressure-containing parts. Suitable for non-corrosive, non-abrasive thermal oils. Common Applications Heat transfer systems in: Chemical and petrochemical plants Food processing Rubber, asphalt/tar, wood, and soap/detergent industries Community heating (district heating) Marine and offshore Hydrocarbon processing It excels in closed-loop systems pumping hot thermal oils without abrasives or corrosive elements. 2 Pumps available, price per pump. YOM 2004