Vertical Multistage Pump

High Pressure Vertical Multistage RO & SWRO Desalination Pump - FILIPUSI

High-Pressure Reverse Osmosis & SWRO Multistage Pump

Corrosion-Resistant Desalination Solutions | 20+ Years of Manufacturing Excellence from China

FILIPUSI specializes in high-pressure vertical multistage pumps engineered for Reverse Osmosis (RO) and Seawater Reverse Osmosis (SWRO) desalination systems. Built with premium corrosion-resistant alloys, our pumps deliver stable continuous high pressure, superior energy efficiency, and long service life under severe brackish and high-salinity marine environments.

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Advanced Desalination & Reverse Osmosis Pump Features

Superior Anti-Corrosion

Constructed with SS316L, Duplex 2205, and Super Duplex 2507 stainless steel to resist harsh chloride and saline pitting corrosion.

High System Efficiency

Optimized hydraulic design delivers maximum pressure output with reduced power consumption for low total cost of operation.

Continuous High Pressure

Capable of generating up to 80+ bar discharge pressure essential for high-flux membrane separation in SWRO operations.

Engineered Structural Integrity for SWRO & RO Membranes

Designed specifically for industrial water treatment and desalination processing, FILIPUSI vertical multistage pumps ensure uninterrupted fluid delivery across membrane filtration networks.

•	Heavy-Duty Wetted Parts: Impellers, diffusers, and shaft sleeves are precision machined from high-grade stainless steel alloys for extended operation.
•	Specialized Mechanical Seals: Equipped with corrosion and wear-resistant silicon carbide (SiC/SiC) mechanical seals tailored for high-salinity fluids.
•	Low NPSH Hydraulic Design: Minimizes cavitation risk and acoustic vibration under varying inlet pressure conditions.
•	Modular Vertical Footprint: Inline connection configuration saves plant floor space and simplifies maintenance without pipe dismantling.

General Technical Specifications

Technical Parameters	Standard Range	Custom Options (OEM / ODM)
Flow Rate (Q)	1 - 1200 m³/h	Customized flow paths available
Operating Pressure (P)	Up to 80 bar (8.0 MPa)	Ultra-high pressure configurations
Liquid Temperature	-15 °C to +120 °C	High-temperature chemical processing
Material Metallurgy	SS304 / SS316L	Duplex 2205 / Super Duplex 2507

Performance & Hydraulic Curves

Performance curve of vertical multistage RO desalination pump

Head & Flow Efficiency Performance Curve

Speed variation curve of vertical multistage RO desalination pump

Speed Variation & Pressure Regulation Curve

Reverse Osmosis & Desalination Pumps Procurement - FAQ

Q1: Why is Duplex or Super Duplex steel recommended for Seawater RO (SWRO) pumps? A1: Seawater contains high concentrations of chloride ions, which cause severe pitting and crevice corrosion in standard stainless steels. Super Duplex 2507 and Duplex 2205 offer exceptional Pitting Resistance Equivalent Numbers (PREN), ensuring reliability under high-salinity, high-pressure continuous operation.

Q2: Can FILIPUSI multistage pumps be integrated into automated RO plants? A2: Yes. All FILIPUSI high-pressure pumps can be equipped with Variable Frequency Drives (VFDs) and smart sensors to interface with central PLC control units, allowing precise feed pressure adjustment according to water temperature and salinity variations.

Q3: What applications are suitable for this high-pressure multistage series? A3: Ideal for Seawater Reverse Osmosis (SWRO) plants, Brackish Water Reverse Osmosis (BWRO) systems, industrial ultrapure water filtration, boiler feed pretreatments, offshore marine water supply, and high-pressure washing systems.

Product Operation & Workshop Testing Videos

Ready to Optimize Your Desalination & RO System?

FILIPUSI offers comprehensive engineering support—from custom hydraulic sizing and material selection to seamless system integration for global RO projects.

CONTACT OUR DESALINATION ENGINEERS

Industrial Water Pump Manufacturer & Exporter | www.filipusi.com

Product Number	Product model	Flow	Bar	Motor power	Voltage	Frequency(f)	Inlet diameter	Outlet diameter	Material	Mechanical seal sealing	Weight(kg)
	VS92-4	85(m³/h)	92(m)	30KW	380V	50HZ	DN100	DN100	AISI304	VSA-22/WB1F14	243KG
	VS92-5-2A	85(m³/h)	105(m)	37KW	380V	50HZ	DN100	DN100	AISI304	VSA-22/WB1F14	258KG
	VS92-5	85(m³/h)	115(m)	37KW	380V	50HZ	DN100	DN100	AISI304	VSA-22/WB1F14	258KG
	VS92-6-2A	85(m³/h)	129(m)	45KW	380V	50HZ	DN100	DN100	AISI304	VSA-22/WB1F14	436KG
	VS92-6	85(m³/h)	139(m)	45KW	380V	50HZ	DN100	DN100	AISI304	VSA-22/WB1F14	436KG
	VS92-7-2A	85(m³/h)	152(m)	45KW	380V	50HZ	DN100	DN100	AISI304	VSA-22/WB1F14	441KG
	VS125-1	120(m³/h)	18(m)	7.5KW	380V	50HZ	DN125	DN125	AISI304	VSA-16/WB1F16	164KG
	VS-125-2	120(m³/h)	34(m）	15KW	380V	50HZ	DN125	DN125	AISI304	VSA-16/WB1F16	223KG
	VS-125-3	120(m³/h)	49(m)	22KW	380V	50HZ	DN125	DN125	AISI304	VSA-16/WB1F16	269KG
	VS125-4	120(m³/h)	69(m)	30KW	380V	50HZ	DN125	DN125	AISI304	VSA-16/WB1F16	305KG
	VS125-5	120(m³/h)	90(m)	37KW	380V	50HZ	DN125	DN125	AISI304	VSA-16/WB1F16	323KG
	VS125-6	120(m³/h)	110(m)	45KW	380V	50HZ	DN125	DN125	AISI304	VSA-22/WB1F14	507KG
	VS125-7	120(m³/h)	118(m)	55KW	380V	50HZ	DN125	DN125	AISI304	VSA-22/WB1F14	628KG
	VS125-8	120(m³/h)	137(m)	55KW	380V	50HZ	DN125	DN125	AISI304	VSA-22/WB1F14	641KG

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