Shanghai Gaoyu Pump & Valve Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of stainless steel deep well pump sd type in China. Please rest assured to wholesale customized stainless steel deep well pump sd type from our factory. For price consultation, contact us.
Product Description
The SD series represents a specialized solution for accessing water from deep, narrow aquifers. Designed specifically for small-diameter wells, this stainless steel submersible well pump employs a multi-stage centrifugal mechanism encased in a slimline stainless steel column. It is engineered to function optimally in well casings ranging from 2 to 6 inches, with the 2 inch stainless steel well pump model being a prime example of its compact design. Powered by a dependable insulating water motor, the stainless steel well pump ensures a steady and uncontaminated water supply, making it ideal for remote residences, agricultural watering systems, and off-grid water setups.
Product Features
Ultra-Slim Design for Constrained Spaces: The defining achievement of this stainless steel submersible well pump is its reduced outer diameter, permitting deployment in tight well casings inaccessible to conventional pumps. This maximizes water extraction from narrow boreholes. Sizing from 2 to 6 inches makes it the perfect 2 inch stainless steel well pump for restrictive spaces, while offering options for wider applications.
Axial Force Management via Floating Impeller: Features a patented "floating" impeller assembly that dynamically counterbalances axial forces during operation. This design innovation significantly lowers the load on thrust bearings-a common vulnerability in deep well pumps-resulting in extended motor service life.
Water-Based Motor Cooling and Insulation: The motor is sealed within a chamber filled with deionized water. This configuration offers enhanced cooling and electrical insulation compared to air-cooled alternatives, contributing to reliable, long-term submerged operation with minimal maintenance.
Robust Construction for Demanding Depths: Despite its slender form, essential parts such as stage connectors and the pump shaft are built with excess strength to endure the torsional stresses and elevated pressures typical of deep well environments.
High-Performance Copper-Wound Motor: Equipped with a premium motor featuring 100% copper windings. This ensures greater electrical efficiency, improved heat dissipation, and enhanced resistance to motor burnout compared to aluminum-wound motors, reinforcing the long-term reliability of this stainless steel well pump.
Operating Conditions
- Suitable Well Diameter: 2"~6" (50~150mm), some special models for larger diameters (8"-18")
- Outlet Diameter: 0.5"~4" (15~100mm)
- Head Range: 5m ~ 450m
- Flow Rate Range: 0.12m³/h ~ 54m³/h
- Power Range: 0.18kW ~ 26kW
- Speed: 2900r/min
- Medium Temperature ≤ +35℃
- Maximum Submersion Depth: Standard ≤70m, Special ≤100m, motor must be fully submerged.
Performance Curve
FAQ
Q: How does the "water-filled wet type" motor in the SD pump work, and how is it different from oil-filled types?
A: In a "water-filled wet type" motor, the interior is filled with pure insulating water (or a special liquid), with the rotor operating directly within it. This water provides insulation, cooling, and lubrication. The key distinction from "oil-filled" motors is the internal medium. Water-filled designs can be simpler and more cost-effective but demand higher water quality and corrosion-resistant materials. Oil-filled versions generally offer superior heat transfer and insulation, suiting harsher conditions. Both types are prevalent in stainless steel well pump technology.
Q: What advantage does the "floating impeller" design provide?
A: Its core benefit is the reduction of axial thrust. In multi-stage pumps, impellers generate cumulative axial force directed at the motor bearings. The "floating" design allows impellers to self-adjust during operation, balancing and offsetting a portion of this force. This reduces bearing load and wear, prolonging the life of both the bearings and the motor, while also promoting smoother, quieter operation-a key durability feature for this stainless steel submersible well pump.
Q: Can this pump be used in very narrow wells, such as 2-inch diameter ones?
A: Absolutely. The standard SD series includes models designed for 2-inch (50mm) wells. Its slender construction is tailored for small-diameter deep wells. We offer specific 2 inch stainless steel well pump models for this purpose. Accurate measurement of the well diameter is crucial during selection to ensure proper fit and adequate clearance from the well wall, making it a leading choice for small-diameter stainless steel submersible well pump applications.
