Shanghai Gaoyu Pump & Valve Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of double-layer jacket stainless steel submersible sewage pump in China. Please rest assured to wholesale customized double-layer jacket stainless steel submersible sewage pump from our factory. For price consultation, contact us.
Product Description
The double-layer stainless steel jacket sewage pump is based on the traditional submersible sewage pump but adds a double-layer stainless steel jacket on the outer layer of the pump body. It is used to protect the motor when the submersible sewage pump has poor heat dissipation, such as no water cooling or the feedback signal of the liquid level gauge malfunctions and the liquid level drops below the motor. This sewage pump with stainless steel double jacket is advanced. Widely used in industrial, agricultural, construction, municipal environmental protection, etc. Can pump liquids containing short fibers, paper, sediment, etc., such as slurry, ash, domestic wastewater, sewage, manure, etc. It is an ideal hydraulic equipment for agricultural drainage and river/pond dredging. Suitable for scenarios with corrosive media or high hygiene requirements, but not for environments with explosion-proof requirements. The stainless steel double jacket submersible pump is a pump worth choosing.
Product Features
Corrosion-Resistant Material: As the product's name, double-layer stainless steel jacket sewage pump, it's outer layer has a double-layer stainless steel jacket, featuring corrosion resistance, fast cooling, ability for the motor to work briefly out of water, and low energy consumption.
Double-Layer Stainless Steel Jacket: Cools the motor through a closed-loop circulation cooling system. The cooling liquid chamber and sewage chamber remain isolated. Even if the pump mechanical seal wears out, sewage will only enter the seal oil chamber and not contaminate the cooling liquid. The sewage pump with stainless steel double jacket design makes it more worry-free and durable.
Cooling Jacket: Cooling jackets are divided into oil-cooled and water-cooled. The oil-cooled type can operate submerged in liquid or be used for dry and waterless operation. The cooling jacket of the submersible pump dissipates heat for the motor, unaffected by the external environment, avoiding poor motor heat dissipation in conditions with particulate or viscous media; the motor will not be burned out due to heat dissipation issues even if the water pump operates without water.
Easy Disassembly: The mechanical seal is installed in the seal oil chamber, isolated from the cooling liquid chamber, allowing seal replacement without dismantling the cooling system.
Durability: Motor protection class IP68, can operate submerged for long periods, durable. Whether the motor is partially immersed in liquid or directly exposed to air, the cooling jacket submersible pump ensures continuous operation in harsh environmental temperatures, effectively extending the submersible pump's service life. The stainless steel double jacket submersible pump is reliable.
Operating Conditions
- Nominal Diameter: DN50-DN600
- Head: 5 m ~ 100 m
- Flow Rate: 5 m³/h ~ 5500 m³/h
- Power: 0.75 kW ~ 550 kW
- Speed: 1450 r/min, 980 r/min, 740 r/min
- Medium Temp.: Not exceeding +40°C
- Medium pH: 4 ~ 10
- Max. Medium Density: 1050 kg/m³
- Power Freq.: 50 Hz, Voltage fluctuation range: 90%-110% of rated value
- Submersion Depth: Not exceeding 5 m

Model/Specifications Table

FAQ
Q: When is the stainless steel jacket cooling system particularly necessary?
A: The sewage pump with stainless steel double jacket is crucial for applications where the pump might operate with low liquid levels, in viscous fluids that impede heat transfer, or in environments where reliable motor cooling cannot be guaranteed by the surrounding medium alone.
Q: Can this pump run dry safely?
A: Yes, the stainless steel double jacket submersible pump with its integrated cooling jacket is designed to handle dry running for limited periods without overheating, protecting the motor from damage in case of unexpected dewatering.
Q: What are the maintenance benefits of the isolated mechanical seal chamber?
A: In the double-layer stainless steel jacket sewage pump, the mechanical seal is housed in an oil chamber separate from the cooling system, allowing for seal inspection or replacement without draining or disturbing the closed cooling loop, simplifying maintenance.




