Stainless Steel Electric Submersible Pump with Pressure Air Inflator, Auto Reflux Protection, Low Noise

Stainless steel pressure pneumatic pump designed for reliable liquid transfer and sampling Key benefits Continuous protection when outlet is blocked: the builtin reflux valve opens to circulate liquid inside the pump while the pneumatic motor continues running. This prevents stagnation and reduces the risk of overheating at the pump core. Longrun cooling effect: when operating continuously for more than 2 hours at pressures below 300 bar, the circulating liquid helps cool the core and lower internal temperature, supporting stable operation under heavy load. Durable pressure system: the pressure piston head core uses a pressurized design that provides selfcompensation as wear occurs, helping to maintain performance and extend service life. Low workplace noise and flow capacity: suitable for environments that require reduced noise and efficient transfer of large liquid volumes. Main specifications Material: stainless steel construction for corrosion resistance and easy cleaning Power: pneumatic drive, compatible with standard compressed air systems Pressure: designed for pressure operation; effective cooling and circulation below 300 bar during extended runs Valve design: integrated reflux valve for automatic internal recirculation when outlet flow is blocked Functional highlights Keeps liquid moving inside the pump when discharge is restricted, avoiding stagnation and supporting continuous operation pressure piston head designed to compensate for wear, maintaining sealing and pumping efficiency Stainless steel wetted parts for durability in demanding liquid transfer and sampling applications Quiet operation suitable for use in occupied work areas Typical applications Sewage and wastewater sampling where robust, corrosionresistant equipment and steady sampling flow are required Large flow rate liquid transfer between tanks or process stages in industrial or municipal facilities Indoor or lownoise environments that require pressure pumping with reduced acoustic impact Compatibility and installation notes Requires a suitable compressed air supply and compatible pressure piping and fittings Stainless steel construction is appropriate for many aqueous and industrial liquids; verify chemical compatibility for specific fluids before use This pump provides a practical solution when pressure, continuous operation, large flow, and reduced noise are priorities, while offering internal recirculation and a pressurecompensating piston head to maintain reliable performance over time.