QDLF stainless steel vertical multistage centrifugal pump

Vertical stainless-steel multistage pipeline centrifugal pump designed for reliable pressurization and transfer of clean or mildly corrosive liquids. The non-self-priming vertical design uses a standard vertical motor and a quick-install mechanical seal for easy maintenance and fast replacement. Flow-wetted parts are manufactured from stainless steel (304 or 316), making the pump suitable for mineral water, softened water, pure water, light chemicals and similar media.

Key features

• Vertical multistage centrifugal design for compact footprint and high head in multiple stages
• Flow parts in stainless steel (304 / 316) for corrosion resistance in mildly corrosive media
• Mechanical shaft seal (hard alloy with fluorine rubber) for improved reliability and temperature tolerance
• Compact, lightweight construction with low noise and energy-efficient operation
• Inlet and outlet aligned at the same level to simplify inline installation
• Supplied to accept a standard vertical motor; local motor options can be fitted per site requirements
• Optional intelligent motor protector available (dry-run, phase loss and overload protection)
• Suitable as a cost-effective equivalent to common CR / CRN style multistage pumps

Applications

• Municipal and building water supply: filtration transfer, booster stations, high-rise building pressurization
• Industrial pressurization: process water, cleaning systems, high-pressure flushing, fire systems
• Industrial liquid transfer: HVAC cooling, boiler feed, condensate systems, machine tool coolant delivery
• Water treatment: ultrafiltration, reverse osmosis, distillation, pool and separator systems
• Irrigation: field irrigation, sprinkler and drip systems

Construction & operating limits

• Wetted materials: stainless steel plate stamping and welding (304 or 316 as required)
• Suitable media: thin, clean, non-abrasive liquids free of solids or fibers; non-flammable and non-explosive
• Typical conveyed liquids: mineral water, softened water, pure water, light oils and light chemical solutions

Buyer benefits

• Reduced lifecycle cost through energy-efficient hydraulics and robust stainless-steel construction
• Easier maintenance with quick-install mechanical seal and industry-standard motor interfaces
• Flexible integration: compact inline configuration and optional protection modules make this pump suitable for both retrofit and new installations

For specification requests, provide required flow (m3/h), total head (m), motor rating and expected liquid properties so a matching model and stage configuration can be recommended.