Variable frequency drive vertical stainless steel multistage centrifugal pump

High-efficiency vertical multistage stainless-steel centrifugal pump engineered for constant-pressure water supply and industrial fluid transfer. Designed to pair with a variable frequency drive (VFD) and an external pressure controller/sensor, this pump maintains a stable pipe-network pressure through closed-loop control — matching supply to demand while reducing energy consumption and improving system reliability.

Key features

• Vertical multistage centrifugal design delivers high head in a compact, space-saving package.
• Fluid-wetted parts stamped and welded from stainless steel (SS304) for corrosion resistance and suitability with mildly corrosive liquids.
• CDLF series: optimized for slightly corrosive media; CDL series intended for non-corrosive liquids.
• VFD compatibility: supports frequency/speed control, soft start/stop, forward/reverse control and protection functions; VFD acts as actuator while an external pressure sensor and controller provide closed-loop constant-pressure control.
• Wide application temperature range: normal temperature type -15°C to +70°C; hot-water type -15°C to +120°C.
• Operating environment: ambient temperature up to +40°C; maximum installation altitude 1000 m.
• Handles thin, clean, non-flammable, non-explosive liquids free of solids or fibers.

Typical applications

• Municipal and building water supply: booster systems for high-rise buildings, water plant filtration and transfer, zoned distribution.
• Industrial pressurization: process water, cleaning systems, high-pressure flushing, fire protection (where appropriate approvals exist).
• HVAC and process systems: chilled water, cooling circuits, boiler feed and condensate return.
• Water treatment: RO and ultrafiltration feed, distillation, separators, pool circulation.
• Irrigation: field, sprinkler and drip irrigation systems.

Advantages

• Stable, constant-pressure delivery with reduced energy use when combined with VFD speed control.
• Corrosion-resistant construction extends service life in mildly aggressive environments.
• Vertical multistage layout reduces footprint and simplifies installation in compact mechanical spaces.
• Suitable replacement for comparable vertical stainless-steel multistage pumps (e.g., CR/CRN-type models).

Notes

• Ensure compatibility of VFD, pressure sensor and controller for closed-loop operation and confirm materials compatibility for aggressive fluids. Follow local codes and standards for fire-protection and potable-water applications.