High-pressure Stainless Steel Vertical Multistage Pump For RO

Application Scenarios

1.Domestic Water Supply for Civil Buildings

1.Secondary pressure boosting for high-rise residential communities, pressure upgrade for reconstruction of old pipe networks, and water replenishment & pressure stabilization for roof water tanks

2.All-day constant-pressure domestic water supply for hotels, office buildings, hospitals, schools and apartments

3.Tap water pressurization for homestays and commercial complexes, and pressure compensation systems for insufficient pipeline pressure

2.Water Treatment & Purification Industry

1.High-pressure booster pumps for RO reverse osmosis pure water equipment and ultrafiltration water purification systems

2.Pressurized transportation of mineral water, purified water and distilled water

3.Raw water lifting for water plants, reclaimed water reuse and clean water circulation systems

3.Industrial Process Pressurization

1.Boiler feed water pumps, circulating cooling water for central air conditioning systems, and hot & cold water circulation pressurization

2.High-pressure water supply for cleaning equipment, spraying systems and machine tool cooling circulating water

3.Delivery of clean process water for brewing, dairy and condiment production

4.Special Working Conditions

Water supply for coastal areas with low chloride ion content, water pressurization on islands, floor heating hot water circulation; transportation of clean media with mild acid and alkali in light industries.

MaterialS

1.Main Materials for Flow-passing Components

1.Full SUS304 (1.4301) Stainless Steel (Standard Configuration for CDLF Series)

It is food-grade stainless steel complying with GB4806.9 drinking water safety standards. The impeller, guide vane, pump barrel and pump shaft are all made of SUS304 material. It is widely applied to municipal tap water, domestic drinking water, ordinary purified water and conventional fire pressure-stabilizing water, serving as the universal option for domestic civil projects.

2.Chloride-resistant SUS316L (1.4404)

With molybdenum added for enhanced corrosion resistance against seawater, brackish water and coastal salt fog, it is suitable for coastal cities, islands, reverse osmosis concentrated water, and mildly acidic & alkaline media in light chemical industries.

3.Economical Ordinary CDL Model

The impeller adopts SUS304 stainless steel while the pump base is made of cast iron, which is only applicable to ordinary clean water working conditions.

2.Auxiliary Structural Materials

– Mechanical Seal: Standard silicon carbide-graphite combination with fluororubber sealing rings; perfluoroelastomer or alloy seals are available for high-temperature working conditions.

– Motor Housing: National standard totally-enclosed YE3 premium-efficiency full-copper motor.

– Base Bracket: Two alternatives are available: ductile cast iron or SUS304 stainless steel.

– Inlet & Outlet Flanges: Cast stainless steel flanges, threaded flanges and quick-clamp flanges.

power、0.37KW-110KW

flow、0.5-240m3/h

head、4-305m

Full Range of Customization Options

1.Structural & Appearance Customization

1.Pump stage quantity: The number of impeller stages can be freely increased or decreased to precisely adjust the head.

2.Connection types: Flange connection, internal thread connection, quick clamp connection.

3.Installation styles: Standard vertical pipeline type, fixed type with base, customized fully outdoor rainproof unit.

2.Medium & Working Condition Customization

1.Special pumps for high-temperature hot water (100℃~120℃) and low-temperature anti-freezing models.

2.Custom thickened SUS316L flow-passing components and special acid & alkali resistant stainless steel materials.

3.Custom explosion-proof motors with Ex grades for use in flammable and explosive workshops.

3.Supporting Intelligent Control Systems

1.Variable frequency control cabinet for single pump, automatic alternating control system with one pump working and one standby.

2.Complete protection functions against water shortage, overpressure, overload and dry running.

3.4G IoT remote monitoring of liquid level and pressure, remote start-stop via mobile APP, and fault alarm notification.

4.Non-standard Customization for Overseas Export Projects

1.IEC/NEMA international standard motors, multi-country voltages including 415V 60Hz and 208V.

2.Custom high pressure bearing capacity and special sizes of flanges.

Packaging Solutions & Standard Production Lead Time

1.Three Types of Packaging Solutions

1.Packaging for Domestic Engineering Projects

The whole pump unit is wrapped with waterproof plastic film and fixed on wooden pallets at the base. Seals and spare parts are separately packed in waterproof cartons.

2.Standard Export Packaging for Ocean Shipment

Fumigated solid wood plywood cases are adopted. The entire pump is wrapped with foam for shockproof, moisture-proof and rust-proof protection. Vulnerable parts such as mechanical seals and bearings are packed in separate compartments to avoid collision damage during sea transportation. Both Full Container Load (FCL) and Less than Container Load (LCL) shipments are available.

3.Complete Documents Delivered with Goods

Chinese and English operation manuals, material quality certificates, factory hydraulic performance test reports, pressure tightness inspection reports, product certificates, scanned copies of all certifications, and lists of wearing parts.

2.Standard Production Cycles

1.Regular in-stock standard models: Delivery within 7~10 working days

2.Common non-standard high-head multi-stage pumps (0.37~37kW): 10~15 working days

3.Custom high-power, high-temperature, SUS316L corrosion-resistant and explosion-proof pumps: 12~20 working days

4.Overseas orders: An additional 3~5 working days are required for fumigation and customs clearance services. Rush orders are acceptable.

Working Principle
1. The vertically installed motor drives the pump shaft and internal multi-stage impellers to rotate at high speed synchronously, and fluid is sucked into the pump chamber from the bottom inlet.
2. The rotating impellers generate centrifugal force to apply work on the fluid, endowing the fluid with kinetic energy and pressure. The water pressure is increased step by step through each impeller stage for superposition.
3. Pressurized fluid converges inside the pump flow channel and discharges from the top outlet for delivery to downstream pipelines or equipment.
4. Matched electric control systems realize automatic start-stop linked with pressure or water level signals, with overload, water shortage and overpressure protection functions to prevent dry running and equipment damage.