Basic Info.

Model NO.

VS4-JHB

Max.Head

~55m

Max.Capacity

~3520m³/H

Driving Type

Motor

Impeller Number

Single-Stage Pump

Working Pressure

1.0 MPa

Influent Type of Impeller

Single Suction Pump

Position of Pump Shaft

Vertical Pump

Usage

Pump, Pumps

Diameter

50~600mm

Temperature

~120℃

International Certification

API / CE / ISO

Material Composition

Metals and Special Alloys

Feature1

Corrosion Resistant

Transport Package

Wooden Box Packaging

Specification

This series achieves a maximum submerged depth of 3.6 meters. It employs a dual-support structure: above the liquid level, two rows of angular contact ball bearings bear axial loads; below the liquid level, one or two pairs of sliding bearings (i.e., shaft sleeves and bushings) bear radial loads. The flow-through components are crafted from high-quality JSB alloy material, resistant to high-temperature sulfuric acid corrosion, ensuring long service life.

Application Scope:

Used in drying and absorption cycle systems of sulfuric acid production, as well as for conveying finished concentrated sulfuric acid. Suitable for transporting sulfuric acid at temperatures ≤120°C with concentrations ranging from 93% to 98%, or fuming sulfuric acid at temperatures ≥105°C.

Specification

Technical characteristics and application industry of Sulzer sulfur pump
Sulzer's sulfur pumps are represented by the OCVSF series, which is a vertical suspension pump designed specifically for transporting liquid sulfur and strictly follows the API 610 standard.

1、 Technical features
1. Heating jacket design (core technology)
Liquid sulfur maintains fluidity within the temperature range of 115-160 ° C, below which it crystallizes and solidifies. The OCVSF pump solves this core problem through a full jacket design:

Design characteristics and functions of jacket parts
The outlet pipe is fully covered with a jacket to maintain the molten state of sulfur throughout the entire process
The column is fully covered with a jacket to prevent solidification during transportation
The discharge pipe can withstand 3 times the load of API 610 nozzle through butt welding and water pressure testing
💡  Key Value: Compared to its competitors' ANSI designs, Sulzer exceeds industry standards in terms of thermal retention and mechanical strength.

2. Heavy duty structures that comply with API 610 standards
OCVSF is a jacket variant of the OCV series VS4 pump, fully compliant with API 610 (ISO 13709) specifications:

Technical characteristics of structural components
The bearing system adopts 7300 series thrust bearings and brass retainers, and the bearing span ensures that the first critical speed is much higher than the operating speed
Heavy duty high torque shaft design, integral or with screw and key connections for easy maintenance
Special open impeller with drainage function to prevent sulfur residue; Key driven design to prevent loosening during reverse rotation
API 610 pump body with bypass (reflux) option, providing minimum continuous flow protection
3. Column bearings and lubrication system
Design Features Technical Description
Bearing material iron graphite alloy, lubricated by filtered medium
Optional hard coating journal configuration
The bearing frame features a replaceable design for easy maintenance
4. Sealing scheme
Sealing type configuration scheme
Mechanical seal with single or double end face API 682 seal, equipped with API 610 sealing chamber
Gas seal optional Plan 72/74 support system
5. Material selection
Material code, material composition, applicable scenarios
S-6/S-8 carbon steel pump body+12% chromium impeller/shaft foundation working condition
A-8 316L stainless steel fully configured for corrosive working conditions
D-1 duplex stainless steel with moderate corrosion and strength requirements
D-2 super duplex stainless steel with high corrosion and high chlorine content working conditions
*Advanced alloys such as Alloy 825 can also be provided according to demand.

6. Performance parameters
Parameter Range
Pump diameter 50-100 mm/2-4 in
Maximum flow rate of 200 m ³/h/880 US gpm
Head up to 100 m/330 ft
Pressure up to 40 bar/580 psi
Temperature -46 ° C to 260 ° C/-50 ° F to 500 ° F
⚠️  Attention: Liquid sulfur transportation is usually controlled at 115-160 ° C, and the pump's upper limit of 260 ° C provides sufficient safety margin.

2、 Application industry
1. Core application scenarios
Specific applications in industry fields
Refinery and Petrochemical Sulfur Recovery Unit (SRU), Refinery Sulfur Transportation
Treatment of sulfur-containing compounds and transportation of sulfur raw materials in the fertilizer industry
Transportation of sulfur produced by natural gas desulfurization unit for natural gas processing
Molten sulfur treatment in mining and metallurgical sulfide ore processing
2. Typical working condition scenarios
Application type description
Transfer and transportation between sulfur storage tanks for tank transportation
Pumping of sulfur-containing wastewater from collection tank/sewage tank
General application scenarios of OCV series pumps for lubricating oil transportation
Sulfur containing high-temperature corrosive liquids require medium treatment that is resistant to high temperatures and corrosion
3、 Core advantages of Sulzer sulfur pump
Advantage Dimension: Technical Support for Customer Value
Anti crystallization full jacket heat retention design to prevent pump jamming caused by sulfur solidification
High reliability fully complies with API 610 standard, with a long continuous operating cycle and significantly extended MTBM
Leak free and mechanical seal design optional to avoid safety and environmental risks caused by sulfur leakage
Easy to maintain modular design+top pull-out structure can be maintained without dismantling pipelines
The temperature resistance of up to 260 ° C is suitable for high-temperature conditions in sulfur recovery units
4、 Comparison with other brands/products
Comparison dimension: Sulzer OCVSF ordinary chemical pump
Does it comply with API 610 ✅  It is mostly based on ANSI/ISO standards
Jacket design: Full jacket (column+outlet pipe) usually has no or only partial jacket
The upper temperature limit is 260 ° C, usually 150-200 ° C
The bearing lubricating medium is self-lubricating and the oil bath is mostly external lubrication
Sealing Options API 682 Complete Solution Simple Mechanical Seal
Applicable medium: Liquid sulfur, ordinary chemical medium
I need to further analyze the detailed comparison between Sulzer OCVSF and other brands of sulfur pumps, or help you organize the promotion strategy for sulfur pumps in the Russian refining/fertilizer industry