Fully Customized VS Series Vertically Suspended API 610 Pumps

The VS Series are vertically suspended centrifugal pumps fully compliant with API 610 11th Edition, including models VS1, VS2, VS3, VS4, VS5 and VS6. Featuring submersible hydraulic components, rigid column support, and top-mounted drive, they deliver excellent NPSH performance, space-saving installation, and reliable operation in sump, tank, deep-well, and cryogenic conditions. Ideal for submerged pumping, volatile fluids, condensate, and limited-space applications in oil & gas, refining, petrochemical and power industries.

VS (Vertically Suspended) series comprises six models: VS1, VS2, VS3, VS4, VS5 and VS6.

As vertical submerged centrifugal pumps, they are engineered for submersible continuous duty, low NPSH requirements, tank/sump installation, and long-shaft deep immersion services.

We optimize hydraulic structures using advanced hydraulic design models to maximize pumping efficiency, and offer full customization services to meet specific project requirements.

VS1 Type API 610 Vertically Suspended Pump - Standard Sump Pump

VS1

VS2 Type API 610 Vertically Suspended Pump - Deep Well Pump

VS2

VS3 Type API 610 Vertically Suspended Pump - Tank Pump

VS3

VS4/5

VS6 Type API 610 Vertically Suspended Pump - High-Pressure

VS6

VS Series (Vertically Suspended) Pump Comparison

API 610 compliant | Submersible design | Excellent NPSH | Space-saving installation

Model	Casing Type	Stages	Key Design Features	Performance Range	Advantages	Typical Applications
VS1	Single casing / diffuser	Single / multistage	Vertical suspended, diffuser type, discharge through column	Flow: 5–2000 m³/h; Head: ≤1200 m; Pressure: ≤16 MPa; Temp: -196~200℃	Excellent NPSH, submersible, dry motor, easy maintenance	Sump pumps, condensate, tank transfer, cryogenic services
VS2	Single casing / volute	Single / multistage	Volute type, vertical suspended, discharge through column	Flow: 10–2500 m³/h; Head: ≤800 m; Pressure: ≤10 MPa; Temp: -40~180℃	Stable flow, wet pit installation, long service life	Wet pit drainage, wastewater, cooling water, utility services
VS3	Single casing / axial/mixed flow	Single-stage	Axial/mixed flow, high flow, low head, discharge through column	Flow: 100–6000 m³/h; Head: ≤30 m; Pressure: ≤2.5 MPa; Temp: 0~80℃	Ultra-large flow, energy-saving, submersible	Seawater lifting, cooling water circulation, flood drainage
VS4	Single casing / volute	Single / multistage	Long shaft, separate discharge pipe, intermediate bearings	Flow: 5–1800 m³/h; Head: ≤1000 m; Pressure: ≤14 MPa; Temp: -40~180℃	Deep immersion, tank bottom extraction, stable shafting	Storage tank transfer, deep sump pumping, hydrocarbon unloading
VS5	Single casing / volute	Single-stage	Cantilever shaft, no intermediate bearings, short immersion	Flow: 3–800 m³/h; Head: ≤150 m; Pressure: ≤4.0 MPa; Temp: -20~150℃	No submerged bearings, minimal wear, clean fluid service	Clean process fluids, auxiliary systems, light sump duty
VS6	Double casing / barrel type	Multistage	Double casing, can-type, full pull-out cartridge	Flow: 5–1600 m³/h; Head: ≤1500 m; Pressure: ≤40 MPa; Temp: -50~425℃	Ultra-high pressure & temp, zero leakage, extreme reliability	High-pressure boosting, LNG/LPG, hydrocracking, offshore services

1. The above parameters are for reference only; please contact us for details. Our company reserves the final right of interpretation.
2. All models comply with API 610 standards and can be customized according to specific project requirements.

How to Select the Right VS Series API 610 Pump?

Selecting the appropriate VS Series API 610 centrifugal pump requires a comprehensive evaluation of immersion depth, NPSH conditions, fluid properties, pressure, temperature, installation space, and maintenance demands.

Choose VS1 for general submersible services requiring excellent NPSH, sump or tank installation with diffuser hydraulics.
Choose VS2 for wet pit, high-flow submerged applications with volute casing and product-lubricated bearings.
Choose VS3 for ultra-large flow, low-head services such as seawater lifting and cooling water systems.
Choose VS4 for deep immersion, long-shaft tank and sump applications with intermediate bearing support.
Choose VS5 for clean, short-immersion duties with cantilever shaft and no submerged bearings.
Choose VS6 for ultra-high pressure, high-temperature, and critical submerged processes with double-casing design.

What are the main advantages of CME VS series vertically suspended API 610 pumps?

Fully compliant with API 610 (ISO 13709) standards
Vertically suspended & submersible design for tank/sump installation
Excellent NPSH performance for low-suction or volatile fluids
Top-mounted motor, dry and easy to maintain
Space-saving vertical layout, ideal for limited installation areas
Wide material options for corrosive, abrasive and cryogenic services
Reliable continuous operation in submerged and harsh conditions

Looking for VS Series API 610 Pump Application for Oil & Gas?

Explore Solutions

Take Action

Need the best-matched, high-efficiency VS series API 610 pumps for your new oil and gas projects?
Planning to upgrade legacy equipment for better performance?
Looking for premium, cost-effective solutions?