Product Details
The ShinMaywa Norus Series 50CR2.75S Submersible Pump stands as one of the most reliable and highly efficient water feature pumps available in today's water garden market. Engineered for an ultra long operational lifespan and low lifetime operating costs, this powerful 1 horsepower pump features a unique, corrosion resistant external design crafted from high grade 304 stainless steel and poly amide fiber reinforced resin. Inside, a cast aluminum bearing housing paired with a vibration reducing bearing configuration ensures superior heat dissipation and structural integrity compared to competing models, making it the premier choice for continuous duty backyard waterfalls and streams.
Built to handle challenging environments with minimal maintenance, the pump utilizes a vortex impeller design that easily passes spherical solids up to 1-1/4 inches, making it exceptionally efficient at handling fibrous or stringy organic materials without clogging. For complete motor protection, it features a high efficiency layout with industry leading Class E insulation, integrated thermal overload safeguards to prevent overheating from under voltage or a locked rotor, and dual mechanical shaft seals consisting of silicon carbide on the lower seal and carbon ceramic on the upper seal. Designed to fit comfortably in most standard pond skimmer boxes, this premium pump is made in Japan and must remain fully submerged at all times during operation.
Pump Performance (Flow Rate by Height)
To ensure proper waterfall visualization, match your required pipe elevation (total dynamic head) against the Gallons Per Hour (GPH) output below:
| Operating Height (Feet of Head) | Water Flow Rate (GPH) |
| 0 Feet (Ground Level) | 7,000 GPH |
| 5 Feet (Standard Waterfall) | 6,900 GPH |
| 10 Feet (Medium Elevation) | 6,000 GPH |
| 15 Feet (High Elevation) | 5,400 GPH |
| 20 Feet (Significant Elevation) | 4,800 GPH |
| 25 Feet (Best Efficiency Point) | 4,080 GPH |
| 30 Feet (Extreme Elevation) | 3,180 GPH |
| 35 Feet (Commercial Elevation) | 2,280 GPH |
| 40 Feet (Ultra High Elevation) | 1,500 GPH |
| 48 Feet (Maximum Height) | 0 GPH (Shut-Off) |
Technical Specifications
| Specification | Value / Rating |
| Pump Model | 50CR2.75S-1 |
| Motor Horsepower | 1 HP |
| Maximum Flow Rate | 7,000 GPH |
| Maximum Head Lift | 48 Feet |
| Recommended Best Efficiency Point | 25 Feet of Total Head Lift |
| Solids Handling Capacity | Up to 1-1/4 Inches |
| Discharge Connection | 2 Inch FPT |
| Power Consumption | 1150 Watts / 10 Maximum Amps |
| Electrical Rating | 115V AC / 60 Hz |
| Power Cord Length | 32 Feet |
| Approximate Dimensions | 15.6 Inches H x 9.4 Inches W x 6.8 Inches D |
| Warranty Coverage | 2 Year Limited Manufacturer Warranty |
Product Documentation
Review additional operational specifications, installation procedures, and parts layouts directly from the manufacturer documentation below:
» Product Instruction Manual PDF
» ShinMaywa Product Specification Sheet PDF
» ShinMaywa Product Catalog PDF
