Screw Pump · Pumps
Three-screw pumps are a reliable choice for marine applications, designed to handle a variety of fluids efficiently and safely. The Allweiler SNH is a marine-rated pump, suitable for engine-room oil services, driven by an electric motor. This pump is specifically designed to handle fuel oil, lube oil, and thermal oil, making it a versatile option for various on-board systems. Common issues encountered with the SNH include screw and liner scoring due to contaminated oil, mechanical seal leakage, relief valve malfunctions causing unstable pressure, and bearing wear following low-viscosity operation. To address these issues, spare parts such as a mechanical seal or gland packing set, bearings, gaskets, relief valve kits, and screw sets are stocked for critical units. Regular maintenance is crucial, with checks on the suction strainer, relief valve setting, and shaft seal leakage recommended. Additionally, during scheduled overhauls, inspecting the screw set and bearing condition ensures the pump continues to operate at peak performance.
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What our service work and the manufacturer documentation say about keeping this model running.
Check suction strainer, relief valve setting and shaft seal leakage. Inspect screw set and bearing condition during scheduled overhaul.
Stock mechanical seal or gland packing set, bearings, gaskets, relief valve kit and screw set for critical units.
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