QY OIL-FILLED SUBMERSIBLE PUMP

Model Parameters

Product Summary

The QY oil-filled submersible pump is engineered for large-scale water transfer in agricultural, industrial, and municipal applications. Powered by an oil-cooled submersible motor, it handles flow rates from 10 to 260 m³/h and heads up to 110 meters across 40 models ranging from 2.2 kW to 7.5 kW. The oil-filled motor design lubricates bearings and insulates windings simultaneously, supporting continuous-duty operation without the cooling limitations that affect water-filled pump motors. For B2B buyers sourcing submersible pumps for irrigation, flood drainage, aquaculture, or construction, the QY submersible pump series delivers the flow capacity, motor durability, and specification breadth that wholesale procurement decisions require.

Product Introduction

The QY oil-filled submersible pump fills the motor cavity with transformer oil rather than water. This allows the motor to manage its own heat independently of the liquid being pumped — a practical advantage over water-filled submersible pump motors, which rely on pumped water for cooling and lose that thermal margin when water temperatures rise during summer irrigation seasons. The oil also lubricates bearings and shaft seals from the very first start, supporting longer service intervals during sustained agricultural irrigation cycles. The QY submersible pump motor is three-phase, Class F insulation, IP68-rated for full submersion, and certified for continuous S1 duty.

Key Product Features

• Oil-Filled Motor Design: Transformer oil lubricates bearings and insulates windings independently of pumped liquid quality, decoupling motor thermal management from seasonal water conditions.
  
  
• Wide Flow and Head Range: Rated flows from 10 to 260 m³/h and heads from 4.5 to 110 meters address irrigation, flood drainage, and pump requirements within one product line.
  
  
• Multiple Outlet Configurations: Outlet diameters from 2 inch to 8 inch let the QY pump connect to most existing pipeline infrastructure without custom fittings.
  
  
• Class F Insulation, IP68 Motor Rating: Supports full submersion and continuous thermal load, fully covering the operating demands of flood drainage and agricultural irrigation pump systems.
  
  
• Power Range from 2.2 kW to 7.5 kW: Five power tiers cover a wide specification range within one product family, simplifying procurement across diverse customer project requirements.

Engineering Advantages

The oil-filled motor in the QY submersible pump delivers thermal independence: motor heat management stays consistent regardless of pumped water temperature, unlike water-cooled designs that track ambient water conditions directly. This matters most during peak summer irrigation when water temperatures are highest and pump demand is also at its peak. The QY oil-cooled submersible pump uses a double mechanical seal — one facing the pumped water, a second facing the oil chamber — giving motor windings two independent barriers against water infiltration. Cast iron pump housing and motor body provide corrosion resistance across water conditions typical of agricultural and industrial pump installations.

Primary Applications

The QY oil-filled submersible pump covers a wide range of high-volume water transfer needs:

• Agricultural irrigation — the QY submersible pump handles sustained flow demands from rivers, reservoirs, canals, and ponds across full irrigation seasons without requiring frequent pump maintenance stops
  
  
• Flood control and municipal drainage — continuous S1 duty and IP68 submersion rating make the QY oil-cooled submersible pump a viable option for drainage pump circuits that need to run until water levels drop
  
  
• Aquaculture and fish farm water management — consistent pump output supports water circulation and oxygenation requirements in commercial fish ponds
  
  
• Construction site and quarry dewatering — the heavy-duty cast iron pump body handles the demanding pump environment found at active construction sites
  
  
• Industrial process water transfer — the wide flow range supports pump applications in processing facilities, cooling water circuits, and water treatment plant intake systems
  
  
• Municipal water supply boosting — high-flow models in the QY series support pump capacity additions in municipal distribution networks during peak demand periods
  
  

Business Value

For distributors and B2B procurement teams, the QY oil-filled submersible pump series spans 40 models covering flows from 10 to 260 m³/h and powers from 2.2 to 7.5 kW — enough to consolidate agricultural and industrial pump sourcing within one product family. This reduces supplier relationships and simplifies spare parts inventory across field service operations.

The oil-filled motor design supports longer intervals between scheduled pump maintenance, lowering callout frequency for distributors managing pump populations across multiple sites.

Outlet diameters from 2 inch to 8 inch across the QY range reduce installation complications when replacing older pump units in existing pipeline infrastructure.

FAQ

Q: What is the difference between an oil-filled and a water-filled submersible pump?
In an oil-filled submersible pump, the motor cavity is sealed with insulating transformer oil that lubricates bearings and protects motor windings independently of the liquid being pumped. A water-filled submersible pump motor relies on the pumped water for motor cooling, which ties motor thermal performance to operating water conditions. The oil-filled design supports more consistent motor behavior across varying water temperatures and longer bearing life during continuous-duty pump cycles.

Q: What types of liquids can the QY submersible pump handle?
The QY oil-filled submersible pump is designed for clean water and lightly contaminated surface water at liquid temperatures up to 40°C with pH 6.5–8.5. It is not rated for sewage, slurry, chemically aggressive liquids, or water with high abrasive particulate content.

Q: Is the QY pump suitable for unattended continuous operation?
Yes. The Class F motor insulation, IP68 submersion rating, and S1 continuous duty specification support extended unattended pump operation. This makes the QY oil-cooled submersible pump a practical fit for agricultural irrigation systems and flood drainage circuits that run on automated schedules.

Q: What is the highest flow rate available in the QY series?
The QY250-7-7,5 model delivers 260 m³/h at 7 meters head on a 7.5 kW motor, making it suitable for large-scale agricultural irrigation networks and municipal flood pump drainage circuits.

Q: How do I choose the right QY pump model for my application?
Match the model to your required flow rate (m³/h) and head (meters) first, then verify the outlet size fits your pipeline. The QY oil-filled submersible pump model numbering encodes flow and head directly — for example, QY65-25-7,5 indicates 65 m³/h flow, 25 meters head, and 7.5 kW power. Contact the sales team with your site specifications for model confirmation on complex pump installations.