Introducing the SLZ end suction, long coupled, single-stage centrifugal chemical process pump. Crafted meticulously to conform with the impeccable standards of EN 22858 / ISO 2858, this marvel of engineering is poised to meet the diverse and demanding needs of the industrial and marine sectors. Engineered for exceptional performance, it adeptly handles low viscosity clean or slightly tainted fluids, effortlessly excluding fibrous or solid materials. It gracefully accommodates a variety of liquids such as fresh water, sea water, and fuels including diesel, petrol, and kerosene. This pump excels across numerous applications, including fuel transfer, chemical processing, energy plants, mining, firefighting, irrigation, water supply and treatment, pressurisation, grey water management, dewatering, and marine operations.
This colossal centrifugal chemical process pump is engineered for heavy-duty tasks, boasting impressive capabilities in both high flow and high pressure, making it a formidable asset in any demanding environment.
Discover the myriad advantages of the long coupled centrifugal chemical process pump design, which offers unparalleled benefits to enhance your operations.
The long coupled configuration shines with its user-friendly maintenance, allowing easy access to the pump head without the need to dislodge the motor, ensuring seamless and efficient upkeep.
Renowned for its robustness, this process pump is crafted for relentless, continuous use. Equipped with additional bearings in the pump head, it significantly reduces motor strain during operation, ensuring longevity and reliability.
Embrace the innovative back pull-out design, which permits motor removal while keeping the pump connected to the pipework. This feature saves precious time during servicing and maintenance, optimizing operational efficiency.
The centrifugal chemical process pump and motor boast independent shafts, meaning only the pump shaft requires replacement if broken. Unlike other less durable models that rely solely on the motor shaft, this design ensures motor preservation and reduced replacement costs.
The long coupled design provides ample space between pump and motor, safeguarding the motor from fluid ingress in the unfortunate event of a seal failure, thus enhancing protection and reliability.
Product Summary
• Expertly crafted to handle a wide variety of clean low viscosity or slightly contaminated fluids with ease and precision.
• Available with a choice of closed or semi-open impellers to suit diverse application needs.
• Ingenious back pull-out design ensures maintenance is swift, simple, and efficient.
• Capable of handling fluid temperatures up to an impressive 175°C, meeting your toughest requirements.
• Designed with a heavy-duty shaft that remains untouched by the fluid, ensuring uncompromised durability.
• Option for an external seal cooling system to maintain optimal performance.
• Featuring independent pump and motor shafts, designed to enhance longevity and reduce maintenance costs.
• Available in a range of materials: cast iron, 316 stainless steel, duplex stainless steel, bronze, and more upon request, for tailored customization.
• Suction and discharge flanges meet EN 1092-2 / PN 16 standards, with alternatives for steel and stainless steel casings to EN 1092-1 / PN 16.
• Variety of sealing options including gland packing, single, double, and cartridge mechanical seals to meet your specific needs.
• Equipped with three-phase 50Hz / 60Hz motors, IP55 rated as standard for reliable performance.
• ATEX versions available upon request, ensuring safety in explosive atmospheres.
• Independent certification available upon request, assuring quality and compliance.
• Manufactured in strict accordance with EN 22858 / ISO 2858 standards, ensuring excellence.
• Engineered for low NPSH, minimizing potential cavitation and maintaining performance.
• Designed for assembly without the need for alignment, simplifying installation.
• All impellers are carefully balanced to ISO 1940 class 6.3 for smooth and efficient operation.
• Long coupled with a sturdy baseplate for enhanced stability and reliability.
• Option to install an API Seal according to API682 standards for enhanced sealing performance.
• Features oil-lubricated ball bearings, designed for smooth operation and extended lifespan.
| Pump Type |
Centrifugal |
| Max Flow Rate |
1500M³H |
| Max Head |
160M |
| Max Temp |
175°C |
| Max Viscosity |
200 cst |
| Max Solid Passage |
20mm |
| Self Priming |
N |
| Inlet/Outlet Sizes |
32mm to 250mm |
| Mechanical seal type |
Double mechanical seal, API plan |
| Pump Materials |
AISI304, AISI316, AISI316L, Bronze, Cast Iron, Cast Steel, Ductile Iron, Duplex, NiAl Bronze, Super Duplex |
Our centrifugal pumps, including chemical pumps, proudly incorporate bearings from prestigious brands. This ensures not only a longer lifespan but also unparalleled durability, even in the most challenging and demanding environments.
To expertly manage axial thrust, most impellers are equipped with precision-engineered wear rings at both the front and back. A strategically placed balance hole on the impeller's back shroud further enhances stability. However, in instances where the axial thrust is minimal, the absence of a rear wear ring and balance hole is noted.
The high-precision casting of the impeller guarantees optimal performance. Available in robust materials such as cast iron, stainless steel, and bronze, it stands as a testament to excellence in craftsmanship.
There are generally two main groups:
1) "Flush" – This technique introduces a clean, cool liquid into the seal chamber, enhancing the operational environment. A secondary, discreet port typically positioned downward, serves as an observation or vent point for leakage detection.
2) "Barrier or Buffer" – Utilized with dual seals, this method circulates a secondary fluid between two mechanical seals. This prevents ambient air from mixing with the pumped fluid, boosts seal cooling, and enhances safety measures.
It is noteworthy that numerous mechanical seals do not necessitate unique external flush systems.
Flexible couplings
Offering a stark contrast to rigid couplings, flexible couplings effortlessly manage some degrees of movement such as vibrations and thermal expansion. This adaptability makes them perfect for setups prone to drive and pump shaft misalignment. Their exceptional vibration absorption also minimizes operational noise, although they come with a more intricate and costly design. Nevertheless, by shielding shafts and bearings from damage and premature wear, they present substantial maintenance savings over time.
Shanghai Semhai Pump Co., Ltd. proudly integrates API standard chemical pumps with API 671 Standard Disc Couplings.
These couplings offer reduced reaction loads and superior balancing quality over standard options, significantly enhancing the efficiency and performance of the entire pump power transmission system.
| Industry |
Services |
| Chemicals, dyes & intermediates |
Organic/inorganic chemicals |
| Oil extraction & waste oil refineries |
Hydrocarbons/Volatile liquids |
| Bulk drugs & Pharmaceuticals |
Dyes & Intermediates |
| Effluent treatment plants |
Water treatment & distribution system |
| Heating & air conditioning plants |
Thermic fluid/ hot oil |
| Cooling towers |
Corrosive/abbrasive liquids |
Professional cooperation agencies
Shanghai Semhai Pump Co., Ltd. has cultivated enduring partnerships with a myriad of prestigious domestic pump-testing institutions, ensuring the highest standards of quality and reliability in our products.
Our esteemed partners include the National Quality Supervision and Inspection Center of Industrial Pumps located in the renowned Tiexi District of Shenyang City,
the Irrigation Machinery Products Quality Inspection Center of the Machinery Industry based in Zhenjiang City,
the Ministry of Agriculture's Water Pump Quality Supervision and Testing Center situated in the vibrant city of Chongqing,
and the Shanghai Mechanical and Electrical Products Quality Inspection Center in the bustling metropolis of Shanghai, among others.
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