The SLZ end suction, long-coupled, single-stage centrifugal chemical process pump is meticulously standardized to EN 22858 / ISO 2858, showcasing its unparalleled adaptability for a myriad of applications in both industrial and marine sectors. Engineered for excellence, it adeptly handles low-viscosity clean or slightly contaminated fluids, ensuring the absence of solid or fibrous particles. This versatile pump effortlessly manages fluids like fresh water, sea water, and various fuels such as diesel, petrol, and kerosene. Its widespread utility spans fuel transfer, chemical processing, energy production, mining operations, firefighting, irrigation, water supply, water treatment, pressurization, grey water management, dewatering, and marine applications, making it an indispensable asset in these fields.
Presenting an impressive and robust centrifugal chemical process pump, this model excels with both high flow and high pressure capabilities, tailored for demanding industrial applications.
The design of this long-coupled centrifugal chemical process pump offers a plethora of benefits that enhance its performance and reliability.
Boasting a user-friendly, long-coupled configuration, this pump ensures effortless maintenance by providing easy access to the pump head without the hassle of motor removal.
Engineered for durability, this process pump is fortified for continuous use. It features additional bearings installed in the pump head, relieving the motor from significant operational strain and extending its lifespan.
The innovative back pull-out design enables effortless motor removal while keeping the pump connected to the pipework. This smart feature saves valuable time during routine servicing and maintenance.
Featuring independent shafts for the centrifugal chemical process pump and motor, this design ensures that only the pump shaft needs replacement if damaged. Unlike less robust alternatives that rely on the motor shaft, this approach protects against costly motor replacements.
The thoughtfully designed long-coupled configuration provides ample space between the pump and motor, safeguarding the motor from fluid ingress in case of a seal failure, thereby enhancing its reliability.
Product Summary
• Capable of pumping a diverse range of clean, low-viscosity or slightly contaminated fluids, ensuring versatility in use.
• Offers the choice between closed or semi-open impellers to best meet application requirements.
• Features a back pull-out design for swift and straightforward maintenance, reducing downtime.
• Capable of handling fluids with a maximum temperature of up to 175°C, showcasing high thermal resilience.
• Includes a heavy-duty shaft designed to prevent contact with the fluid, enhancing durability.
• Equipped with an external seal cooling system to maintain optimal performance under demanding conditions.
• Independent pump and motor shafts ensure ease of maintenance and replacement.
• Available in materials such as cast iron, 316 stainless steel, duplex stainless steel, and bronze, with additional options available upon request, catering to varied operational needs.
• Suction and discharge flanges meet EN 1092-2 / PN 16 standards, with options for flanges per EN 1092-1 / PN 16 for steel and stainless steel casings.
• Offers a choice of gland packing or single, double, and cartridge mechanical seal options to suit specific application demands.
• Equipped with three-phase 50Hz / 60Hz motors, with IP55 as the standard protection level.
• ATEX-certified versions available upon request, providing safety for hazardous environments.
• Independent certification is available upon request, ensuring compliance with industry standards.
• Manufactured in strict accordance with EN 22858 / ISO 2858 standards, ensuring high-quality performance.
• Features a low NPSH, enhancing suction performance and efficiency.
• Designed for assembly without alignment, simplifying installation.
• All impellers are meticulously balanced to ISO 1940 class 6.3, ensuring smooth operation.
• Long-coupled with a sturdy baseplate, providing stability and ease of installation.
• Compatible with an API seal installation according to API682 guidelines, ensuring high safety standards.
• Utilizes oil-lubricated ball bearings to enhance longevity and reduce maintenance intervals.
| 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 and chemical pumps proudly incorporate world-renowned brand bearings, designed to thrive even in the most challenging environments. Experience the prolonged service life of our pumps, engineered to endure!
To masterfully balance axial thrust, our impellers feature dual wear rings—strategically placed at both the front and rear. A sophisticated balance hole graces the back shroud to enhance stability. For pumps with minimal axial thrust, elegant simplicity reigns, with no need for a rear wear ring or balance hole.
Our high-precision casting impellers are the heart of superior performance, crafted with precision from robust materials like cast iron, stainless steel, and bronze to ensure unwavering reliability.
Our two main seal groupings include:
1) "Flush" - Enhance your seal chamber's environment with a continuous infusion of clean, cool liquid. This system features a smaller, downward-oriented port for effortless leakage observation and venting.
2) "Barrier or Buffer" for dual seals - This advanced system introduces a secondary fluid, creating a protective barrier between mechanical seals. It not only prevents contact with ambient air but also optimizes seal cooling and maximizes safety.
It's important to note that many mechanical seals operate efficiently without the need for special external flush arrangements, simplifying maintenance.
Flexible couplings
Flexible couplings shine where their rigid counterparts might falter. Capable of accommodating vibrations and thermal expansion, they are perfect for applications with unavoidable shaft misalignment. Their ability to dampen vibrations results in reduced operating noise. While their intricate design is more costly upfront, the protection they offer to shafts and bearings translates into significant maintenance savings over time.
At Semhai, our API standard chemical pumps integrate API 671 Standard Disc Couplings to deliver unparalleled performance.
These couplings boast lower reaction loads and superior balance quality, translating into enhanced efficiency and effectiveness across the pump's power transmission spectrum.
| 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 forged esteemed and long-standing partnerships with a number of premier domestic pump-testing institutions, ensuring our API 610 Horizontal Flood Pump with Explosion-Proof Motor and Cooling System meets the highest standards. Our esteemed partners include:
The prestigious National Quality Supervision and Inspection Center of Industrial Pumps, situated in Tiexi District, Shengyang City,
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, located in Zhenjiang City,
The esteemed Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, based in the vibrant city of Chongqing,
The distinguished Shanghai Mechanical and Electrical Products Quality Inspection Center, centrally located in Shanghai City, among others.
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