VS4 series API 610 vertically chemical centrifugal suspended Pumps

API 610 type VS4  vertically suspended, cantilever sump pumps with discharge trough the column.

The pump and motor are flexibly coupled and supported by a mounting flange.

• Medium :

  Solids and corrosive liquid、Chemical process、Sewage、Flammable and explosive liquids

• Flows :

  to 800m3/h (3,520 GPM)

• Heads :

  to 125m (410 ft)

• Temperatures :

  -40 ~ 500℃(-40-932℉)

• Pressures :

  to 20 bar / 50bar (290 / 720 PSIG)

• Speed :

  /

• API Type Code :

  API 610 11th VS4 / VS5

Product attributes:

Maximum head :>150m

Maximum fiow:>400L/min

Driving type:Motor

Working impeller inlet way:Single Suction Pump

Pump shaft positon:Vertical Pump

Impeller structure:Closed

Transportation package:Wooden Case

Specification:API 610 standard 

Origin:Dalian,Liaoning,China

Size: DN40~400

Head: ~200m

Flow:~400m3/H

Temperature:-20~300Degrees Celsius

Pressure:~5MPa

Application：

KY model pumps are of vertical,single stage and single suction, long shaft submerged pumps, available for all kinds of sewage conveying from power plants,chemical factories and wastewater traetment plants.

It is mainly used in

1. Thermal power factory

2. chemical factory

3. wastewater treatment factory

4. steels factor,steels rolling mill

5. paper mill

6. cement factory

Performance range：

1. Capacity  Q 2-400m3/h

2. Head   H 5-100m

3. Working temperature T -20~ +200°C

Structural ：

1. Safe and reliable connecting shaft structure.

2. Adopt multi-points support for the rotor component and pumps runs safely and reliably.

3. Adopt external or self-lubrication for sliding bearing.

4. The impeller has submerged into medium when the pump begins to run,so start up become easy without air evacuation.

5. Adopt two-runner casings(the diameter is graeter than 80mm).It is small of radial force of rotors component, of shafts deflection and of wear and tear from sliding bearings,so long service life.

6. The pump runs clockwise looking from the motor end.

Material：
Carbonsteel; chromed steel; austeniticstainlesssteel; duplexsteel; Titanium and Titanium Alloys; Hastelloy C-276 and other special materials; It depends the customer's request.

API 610 VS4 vertically chemical centrifugal suspended Pumps

Product profiles:

• API 610 type VS4  vertically suspended, cantilever sump pumps with discharge trough the column.
• The pump and motor are flexibly coupled and supported by a mounting flange.

Features:

• Separate discharge pipe, no leakage of pressurized liquid, shaft seal is not necessary.
• Submerged impeller and volute casing, priming and venting are not required while starting up.
• Reliable shaft design ensures pump running stability.
• Suction pipe can be employed while deeper depth installation is required.
• Heating jacket is employed while pumping high temperature melting material.
• Open impeller is available for liquid containing particles.

Applications:

• Transfer solids and corrosive liquid as slurry pump.
• Rolling mill.
• Chemical process.
• Sewage treatment.
• Transfer pump for flammable and explosive liquids.

API 610 is the international authoritative standard for centrifugal pumps used in the petroleum, petrochemical, and natural gas industries, and "VS4" is a specific pump type defined in this standard.

The following is a detailed introduction to the API 610 VS4 pump. I will systematically elaborate on its definition, design features, application scenarios, and comparison with other common API pump types.

API610 VS4 Submerged Long Shaft Centrifugal Pump

Product originDALIAN,LIAONING,CHINA

Delivery timeTHREE MONTHS

Supply capacitySUFFICIENT SUPPLY

Kehuan pump make a comprehensive breakthrough in the status quo of magnetic pumps (such as High power, High temperature, Mud, Easy vaporization, High melting point, etc.)
Design framework: We use European advanced hydraulic model;
Design standards according to American petroleum institute standard API685.
High standard material application: Permanent magnet (Sm2Co17, Temp. -196~450℃), Sliding bearing (SSIC), Containment shell(HC-276), Rolling bearing (SKF/NSK), Coupling (Wuxi Chuang ming) /German KTR), Electric motor (Nan yang/Jiamusi).

1、 Core performance parameters
The parameters of the OCV series pumps cover typical operating requirements in the refining, oil and gas production, and petrochemical industries.

Parameter project OCV series (standard type) OCVSF series (sulfur melting special type)
Flow rate up to 750 m ³/h up to 200 m ³/h
Lift up to 280 meters and up to 100 meters
Maximum pressure 40 bar 40 bar
Applicable temperature -46 ° C to 260 ° C -46 ° C to 260 ° C
Export size 50 to 200 mm 50 to 100 mm
It should be noted that the data on third-party websites may differ slightly from the official data (for example, the head is displayed as 920 feet/280 meters or 880 feet/268 meters, and the upper temperature limit is displayed as 205 ° C or 260 ° C). It is recommended to prioritize the data on Sulzer's official website (sulzer. com).

2、 Core design features
Universality of components with OH2 pump: This is the most significant economic advantage of Sulzer VS4 pump. Its pump body, pump cover, easily worn parts, and impeller can be fully compatible with over 10000 in-service OHH and OHHL (API 610 OH2 type) horizontal pumps. This can significantly reduce the cost of spare parts inventory for users.

Strictly follow API standards:

Fully compliant with the latest version of API 610 standard, the bearing spacing ensures that the first critical speed is higher than the operating speed.

The optional sealing chamber complies with API 610 Table 7 and is compatible with mechanical seals according to API 682 standard.

Rich material options: Provides various material grades commonly found in API 610 standards, such as S-6, S-8, A-8, D-1, D-2, etc., to adapt to different corrosive working conditions.

Bearing and lubrication system:

Standard thrust bearings with oil lubrication and fan cooling, optional grease or oil mist lubrication.

The standard configuration of the intermediate shaft bearing is product lubricated carbon graphite bearings, with optional grease lubrication or external flushing solutions.

Installation method: Rectangular epoxy coated carbon steel mounting plate is standard, and blind flange mounting plate in accordance with ASME B16.47 standard can be provided for pressure tank installation.

3、 Special model: OCVSF sulfur melting pump
Sulzer has developed an OCVSF variant on the OCV standard platform for the transportation of molten sulfur, which has core features including:

Full jacket design: The columns and discharge pipes are equipped with steam jackets to ensure that sulfur remains in a molten state throughout the entire pumping path.

Special impeller: Adopting a semi open impeller with free discharge characteristics to prevent sulfur solidification and blockage.

Materials and Structure: S-6, A-8, D-1, D-2 and other materials are also provided, and the discharge pipe can withstand a pipe mouth load three times that of API 610 standard.

I hope the above parameters are helpful for your selection work. If you need to know its application cases under specific working conditions, we can continue to explore.

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1. Core Definition and Basic Concepts
API 610: American Petroleum Institute Standard, officially known as "Centrifugal Pumps for Petroleum, Petrochemical, and Natural Gas Industries". It specifies the minimum requirements for the design, materials, manufacturing, testing, and other aspects of centrifugal pumps used under harsh operating conditions to ensure their high reliability, long-term operation, and safety.

VS4: In API 610 standard, VS stands for "Vertically Suspended" and 4 represents its specific structural type. VS4 is commonly referred to as a "submersible vertical pump" or a "wet pit vertical pump".

Core feature: The entire pump assembly (including the motor) of VS4 pump is located above the liquid level, and the impeller immersed in the liquid is driven by a long transmission shaft. The "shell" part of the pump (i.e. impeller and guide housing) is installed in a separate container or conduit called a "caisson", which is inserted into a storage tank or pool.

2. Typical structural decomposition of VS4 pump
Top component:

Drive motor: Standard horizontal motor, installed on top flange or frame, easy to maintain.

Thrust bearing components: bear the axial force generated by pump operation and the weight of the rotor, usually using Kingsbury type or similar thrust bearings lubricated with oil, which is one of the most critical components of VS4.

Shaft seal: Usually single or double mechanical seals are used, arranged in a dry area above the liquid level for easy observation, maintenance, and setting of the sealing system.

Transmission shaft system:

Long transmission shaft: connects the motor and impeller, with a length of several meters to tens of meters. The shaft is connected by multiple segments through rigid couplings and is equipped with intermediate bearings (straightening bearings).

Intermediate bearing: arranged along the long axis to prevent lateral vibration (swing) of the shaft. These bearings require lubrication and cooling of the pumped liquid, therefore there are requirements for the lubricity of the liquid (not suitable for media containing too many solid particles or extremely poor lubricity).

Bottom pumping component (inside the caisson):

Impeller: Typically designed as a single-stage or multi-stage to meet the required head.

Diversion casing/pump casing: converts the kinetic energy of liquid into pressure energy. In VS4, this part of the structure is compact and sinks underwater.

Suction horn/filter: guide the liquid to enter the impeller smoothly.

Sink box: a vertical cylindrical structure that wraps around and supports the bottom components and drive shaft of the pump. It is fixed at the bottom or side wall of the pool/tank, providing a channel for liquid to enter the pump and protecting internal components.

3. Core design features and advantages
Space saving: The motor and main maintenance points are located above the liquid level, without occupying valuable tank area or pit space. Very suitable for storage tank areas, cooling tower water tanks, sewage treatment tanks, and other occasions.

Immersion free motor: The motor is a standard horizontal air-cooled motor with high reliability, low cost, and easy maintenance, avoiding sealing and insulation problems that may occur with submersible pumps or wet stator motors.

Excellent cavitation performance: Due to the impeller being immersed in liquid, the effective net positive suction head (NPSHa) is very large, and there is basically no need to consider cavitation issues.

Easy to maintain: When repairing mechanical seals, bearings, and motors, there is no need to empty the storage tank or water tank. Simply lift the lifting part of the pump (from the motor to the impeller) out as a whole. This is its significant advantage over submersible pumps and certain horizontal pumps.

Rigid design: Compliant with API 610 for rigid rotors, high standard bearings, and shaft deflection requirements, ensuring stable operation.

4. Main application scenarios
VS4 pump is the preferred solution for the following applications:

Tank area in refineries/chemical plants: used for transporting, pouring, and circulating crude oil, refined oil, and chemical raw materials in the tank area.

Cooling water system: circulating water pump for large cooling towers.

Rainwater drainage and sewage treatment: upgrading and discharging of rainwater monitoring pools and emergency accident pools in factories.

Seawater elevation: seawater intake from desalination plants or coastal factories.

Low pressure boiler feedwater: feedwater pump for deaerator water tank.

Sulzer's OCV series oil sump pumps meet the API 610 VS4 standard. This is a vertical, suspended, single-stage, submersible pump designed specifically for pumping liquids from collection tanks, oil tanks, or discharge pits.

🔧  Core structural characteristics
The structural design of OCV pumps revolves around the core of heavy-duty reliability, ease of maintenance, and adaptability to special media:

Compliant with international standards: Designed strictly in accordance with the latest version of API 610 (VS4) standards, ensuring the reliability of the equipment under harsh operating conditions.

High interchangeability design: The pump cover, wear-resistant parts, and impeller can be compatible with over 10000 Sulzer API 610 OH2 pumps (such as OHH and OHHL series), reducing spare parts inventory costs.

Robust rotor and bearing system:

Heavy duty shaft and API 610 bearing spacing: Ensure that the first critical speed of the shaft system is higher than the operating speed to reduce vibration.

Product lubrication of intermediate bearings: The intermediate bearings are lubricated by pumped media and are suitable for cleaning liquids.

Multiple thrust bearing lubrication options are available: standard thrust bearings with oil lubrication and fan cooling, as well as optional grease lubrication or oil mist lubrication to adapt to different working conditions.

Design adapted to special working conditions:

Steam jacket (OCVSF model): A model with steam jacket is specially designed for media such as molten sulfur that require heat tracing to prevent medium solidification.

Multiple material options: Provide various material grades such as S-6, S-8, A-8, D-1, D-2 specified in API 610 to cope with different corrosive or corrosive media.

Flexible installation method: equipped with rectangular epoxy coated steel mounting plate (for water pits or pools), or optional B16.47 blind flange mounting plate (for pressurized tank installation).

📊  Main performance parameters
Supplementary Explanation of Parameter Range for Sulzer OCV (VS4) Performance Project
The maximum flow rate can reach 750 m ³/h (2200 GPM), which belongs to the medium flow range.
The maximum head can reach 280 m (880 ft), and the single-stage design can achieve medium to high head.
The maximum working pressure can reach 40 bar (580 psi), suitable for medium pressure conditions.
The working temperature range is wide from -46 ° C to 260 ° C (-50 ° F to 500 ° F), covering various industrial media.
Export sizes ranging from 50 to 200 millimeters (2 to 8 inches) are available in multiple calibers.
🏭  Main application industries
With its reliable vertical underwater design and ability to adapt to special media, Sulzer OCV (VS4) pumps are mainly used in the following fields:

Oil and Natural Gas:

Oil and water pits/drainage collection pits: collect and discharge oily wastewater or rainwater in the areas of refineries and chemical plants.

Lubricating oil supply: serving as the oil supply pump for the lubricating oil circulation system.

Tank area transfer: a foot pump used in the tank area to extract the collected liquid from the tank.

Chemical and Special Processes:

Molten sulfur transportation (OCVSF model): specifically designed for sulfur forming or transportation processes that require heat tracing and insulation.

I hope the above information about Sulzer VS4 pump is helpful to you. If you need to compare its selection differences with VS1 (closed axial flow pump) or VS6 (multi-stage bag pump), feel free to ask me again.
Flowserve VS4 pump structural characteristics and application industries
I have read 8 web pages
Flowserve pumps that comply with API 610 VS4 standards are mainly due to their Worthington ®  ECPJ series oil sump pump. This is a single-stage, vertical, Lineshaft designed submersible pump specifically designed for pumping process fluids from collection tanks, oil tanks, pits, or open storage tanks.

🔧  Core structural characteristics
The structural design of ECPJ pump revolves around the core of heavy-duty reliability, modular customization, and adaptability to harsh working conditions:

Compliant with international standards: Designed strictly in accordance with the latest version of ISO 13709/API 610 (VS4) standards, the sealed chamber and flushing scheme comply with API 682 (ISO 21049) standards, ensuring the reliability of the equipment under harsh operating conditions.

Modular design and multiple hydraulic combinations: Based on a modular design system, we offer 45 size specifications and a maximum installation length of 8 meters. We have multiple impeller hydraulic designs that comply with API 610 standards and can be customized according to different operating conditions

ECPJ-R: Closed impeller

ECPJ-O: Semi open impeller

ECPJ-F: Free Flow Impeller

ECPJ-L: Barske type impeller

Design adapted to special working conditions:

Steam jacket type (ECPJ-H): specially designed for working conditions such as liquid sulfur that require heat tracing and insulation to prevent medium solidification.

Induction Wheel (ECPJ-I): For harsh suction conditions with extremely low NPSHa, induction wheels can be equipped to significantly improve the suction performance of the pump.

Multiple material options: We provide alloy materials that comply with API 610, NACE MR0175/MR0103 standards, as well as special corrosion-resistant materials such as titanium alloys to cope with the corrosiveness of different media. Meanwhile, the pump design can meet the requirements of ATEX Zone 0/Category 1 explosion-proof zones.

Robust rotor and bearing system:

Precision cast impeller: Through dynamic balancing, it ensures smooth operation and low vibration within a wide flow range.

Anti rotation impeller nut: securely lock the impeller onto the shaft, with threads not exposed to the pumped fluid, to prevent corrosion.

Thrust Pot: API 40 ° angular contact bearings arranged back-to-back are used to make standard (non thrust) motors usable and meet the bearing life standards of API 610.

Reliable sealing and connection design:

API 682 Sealed Chamber: Allow installation of cartridge type single end, non pressure double end, or pressure double end mechanical seals to meet safety and environmental requirements.

Metal to metal fit: The pump body and pump cover adopt metal to metal fit, and are equipped with fully restricted and controllable compression gaskets to ensure correct sealing and alignment.

📊  Main performance parameters
Supplementary Explanation of Parameter Range for Flowserve ECPJ (VS4) Performance Project
The maximum flow rate can reach 1000 m ³/h (4400 GPM), which belongs to the medium flow range.
The maximum head can reach 150 m (500 ft), which is a medium head achievable in a single-stage design.
The maximum working pressure can reach 20 bar (285 psi), suitable for medium pressure conditions.
The working temperature range is very wide from -46 ° C to 350 ° C (-51 ° F to 660 ° F), covering a variety of industrial media. The steam jacket type can maintain high temperatures.
The maximum installation length can reach 8 meters (26 feet) and can be customized according to the depth of the sump or storage tank.
🏭  Main application industries
With its reliable vertical underwater design and ability to adapt to special media, Flowserve ECPJ (VS4) pumps are mainly used in the following fields:

Oil and Natural Gas:

Chemical and hydrocarbon processing: Collect and discharge process fluids in the collection pits and discharge pits of refineries and chemical plants.

Tank area and wastewater treatment: used for foot pumps in tank areas or for collecting and transporting wastewater within the factory area.

Drilling and production: Fluid transportation during auxiliary production processes.

Chemical and Special Processes:

Molten salt/sulfur transportation (ECPJ-H model): specifically designed for special process media that require heat tracing and insulation.

Production of renewable energy fuels.

electricity generation:

General services for power plants: used for auxiliary processes such as drainage from collection pits within the power plant.

Water resources:

Water supply and treatment: used for water intake, industrial water supply, and fluid transportation within water treatment plants.

Flood control, groundwater development, and irrigation.

General Industry:

Steel, paper, shipbuilding, and marine engineering: used for drainage of various industrial wastewater pits.

I hope the above information about Flowserve VS4 pump is helpful to you. If you need to know the differences in selection between it and Sulzer VS4 pump, or if you want to compare other pump types (such as VS1, VS6), feel free to ask me again.