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First Pump® Vertical Multistage Pumps
First Pump® Vertical Multistage Pumps are high-efficiency, space-saving solutions designed for demanding water supply and industrial applications. Available in two specialized series—DL/DLR (general-purpose) and CDL/CDLF (stainless steel, corrosion-resistant)—these pumps combine advanced hydraulic engineering with robust construction to deliver reliable performance across diverse environments. Ideal for high-rise buildings, fire protection systems, and industrial processes, they ensure energy efficiency, low noise, and long service life.
Key Features
High Efficiency & Stability:
Optimized hydraulic models ensure smooth performance curves and wide operating ranges.
DL Series: Complies with fire safety standards for pressure-critical applications.
CDL/CDLF Series: Superior corrosion resistance with stainless steel construction.
Compact & Modular Design:
Vertical, segmented structure minimizes footprint and simplifies installation.
Configurable inlet/outlet orientations (90°, 180°, 270°) and multiple discharge ports (up to 5) for flexible system integration.
Durable Construction:
DL/DLR: Cast iron or carbon steel components; handles temperatures up to 80°C (DL) or 120°C (DLR).
CDL/CDLF: Stainless steel wetted parts for mildly corrosive liquids (e.g., chemicals, purified water).
Advanced Sealing & Lubrication:
Dual sealing options: packing or mechanical seals (hard alloy/fluororubber for high-temperature reliability).
Lower bearing: Water-lubricated; upper bearing: Angular contact ball bearing.
Axial Thrust Management:
Balance drum absorbs 90% of axial force; residual load managed by angular contact bearings.
Smart Protection:
Optional intelligent protectors guard against dry-running, phase loss, and overloads (CDL/CDLF).
Applications
Building Services: High-rise domestic water supply, firefighting (sprinkler/water curtain systems), HVAC.
Industrial & Municipal: Factory water transfer, long-distance pipeline pressurization, wastewater circulation.
Specialized Fluids: Clean water, mineral oils, mild chemicals (CDL/CDLF), and high-temperature boiler feed (DLR).
Technical Specifications
Parameter | DL/DLR Series | CDL/CDLF Series |
Medium | Water-like fluids (viscosity <150 mm²/s), non-abrasive, non-corrosive | Clean, non-flammable liquids (e.g., purified water, light chemicals) |
Temp. Range | -15°C to 80°C (DL) / 120°C (DLR) | -15°C to 120°C |
Max. Pressure | ≤2.5 MPa | ≤2.5 MPa |
Materials | Cast iron, carbon steel | Stainless steel (AISI 304/316) |
Motor | Y-type three-phase asynchronous | Standard vertical motor |
Design Highlights
Rigid Coupling: Direct connection between pump and motor eliminates alignment needs.
Easy Maintenance: Modular components (seal rings, balance sleeves) allow quick part replacement.
Versatile Configuration:
◦ Inlet/outlet on the same centerline simplifies piping. ◦ CDL/CDLF supports horizontal pipeline integration. |
Altitude Adaptation: Standard operation up to 1,000 meters; customized solutions available for higher elevations.
Why Choose Our Vertical Multistage Pumps?
Energy Savings: High hydraulic efficiency reduces power consumption.
Reliability: Robust bearings and corrosion-resistant materials extend lifespan.
Adaptability: Tailor flow (up to 1,350 m³/h) and head (up to 1,725 m) by adjusting stages or trimming impellers.
Compliance: DL Series meets fire safety regulations for critical infrastructure.
First Pump® Vertical Multistage Pumps
First Pump® Vertical Multistage Pumps are high-efficiency, space-saving solutions designed for demanding water supply and industrial applications. Available in two specialized series—DL/DLR (general-purpose) and CDL/CDLF (stainless steel, corrosion-resistant)—these pumps combine advanced hydraulic engineering with robust construction to deliver reliable performance across diverse environments. Ideal for high-rise buildings, fire protection systems, and industrial processes, they ensure energy efficiency, low noise, and long service life.
Key Features
High Efficiency & Stability:
Optimized hydraulic models ensure smooth performance curves and wide operating ranges.
DL Series: Complies with fire safety standards for pressure-critical applications.
CDL/CDLF Series: Superior corrosion resistance with stainless steel construction.
Compact & Modular Design:
Vertical, segmented structure minimizes footprint and simplifies installation.
Configurable inlet/outlet orientations (90°, 180°, 270°) and multiple discharge ports (up to 5) for flexible system integration.
Durable Construction:
DL/DLR: Cast iron or carbon steel components; handles temperatures up to 80°C (DL) or 120°C (DLR).
CDL/CDLF: Stainless steel wetted parts for mildly corrosive liquids (e.g., chemicals, purified water).
Advanced Sealing & Lubrication:
Dual sealing options: packing or mechanical seals (hard alloy/fluororubber for high-temperature reliability).
Lower bearing: Water-lubricated; upper bearing: Angular contact ball bearing.
Axial Thrust Management:
Balance drum absorbs 90% of axial force; residual load managed by angular contact bearings.
Smart Protection:
Optional intelligent protectors guard against dry-running, phase loss, and overloads (CDL/CDLF).
Applications
Building Services: High-rise domestic water supply, firefighting (sprinkler/water curtain systems), HVAC.
Industrial & Municipal: Factory water transfer, long-distance pipeline pressurization, wastewater circulation.
Specialized Fluids: Clean water, mineral oils, mild chemicals (CDL/CDLF), and high-temperature boiler feed (DLR).
Technical Specifications
Parameter | DL/DLR Series | CDL/CDLF Series |
Medium | Water-like fluids (viscosity <150 mm²/s), non-abrasive, non-corrosive | Clean, non-flammable liquids (e.g., purified water, light chemicals) |
Temp. Range | -15°C to 80°C (DL) / 120°C (DLR) | -15°C to 120°C |
Max. Pressure | ≤2.5 MPa | ≤2.5 MPa |
Materials | Cast iron, carbon steel | Stainless steel (AISI 304/316) |
Motor | Y-type three-phase asynchronous | Standard vertical motor |
Design Highlights
Rigid Coupling: Direct connection between pump and motor eliminates alignment needs.
Easy Maintenance: Modular components (seal rings, balance sleeves) allow quick part replacement.
Versatile Configuration:
◦ Inlet/outlet on the same centerline simplifies piping. ◦ CDL/CDLF supports horizontal pipeline integration. |
Altitude Adaptation: Standard operation up to 1,000 meters; customized solutions available for higher elevations.
Why Choose Our Vertical Multistage Pumps?
Energy Savings: High hydraulic efficiency reduces power consumption.
Reliability: Robust bearings and corrosion-resistant materials extend lifespan.
Adaptability: Tailor flow (up to 1,350 m³/h) and head (up to 1,725 m) by adjusting stages or trimming impellers.
Compliance: DL Series meets fire safety regulations for critical infrastructure.
