Introducing the SLZ end suction, long coupled, single stage centrifugal chemical process pump: a paragon of engineering excellence, standardized to EN 22858 / ISO 2858. This versatile pump is expertly crafted to cater to an array of industrial and marine applications. Designed diligently to handle low viscosity, clean, or slightly contaminated fluids, it operates seamlessly without solid or fibrous impediments. Whether it’s fresh water, sea water, or fuels such as diesel, petrol, and kerosene, this pump excels in diverse environments. It is the ideal choice for fuel transfer, chemical processing, energy plants, mining operations, fire fighting, irrigation, water supply, water treatment, pressurization, grey water management, dewatering, and marine applications.
Engineered for high performance, this robust centrifugal chemical process pump offers exceptional high flow and high-pressure capabilities, making it an indispensable asset in demanding industrial settings.
The thoughtful design of this long coupled centrifugal chemical process pump boasts numerous advantages, setting it apart from conventional solutions.
One of the standout benefits of the long coupled configuration is its effortless maintenance. The design allows for easy access to the pump head without the cumbersome task of removing the motor.
Designed for relentless, continuous operation, this process pump is fortified with additional bearings in the pump head. This strategic design choice significantly alleviates strain on the motor during operation.
The innovative back pull out design revolutionizes maintenance efficiency, enabling the motor to be detached while keeping the pump connected to the pipework. This smart feature ensures substantial time savings during service and maintenance activities.
Distinctly engineered, the centrifugal chemical process pump and motor boast independent shafts. This unique feature ensures that only the pump shaft requires replacement in the unlikely event of a malfunction. In stark contrast, less durable pumps integrate the motor shaft, necessitating complete motor replacement if the shaft fails.
The innovative long coupled design creates a spacious barrier between the pump and motor, offering a protective shield for the motor against fluid ingress in the rare case of a seal failure.
Product Summary
• Skillfully pumps a diverse range of clean, low viscosity, or slightly contaminated fluids, ensuring reliability across various applications.
• Offers flexibility with closed or semi-open impeller options, tailored to meet your specific needs.
• Features a back pull out design for swift and effortless maintenance, minimizing downtime and maximizing efficiency.
• Capable of handling fluids with a maximum temperature of 175°C, showcasing its resilience and adaptability.
• Equipped with a heavy-duty shaft that remains untouched by the fluid, ensuring longevity and performance.
• Customizable with an external seal cooling system, enhancing operational safety and reliability.
• Independent pump and motor shafts minimize replacement costs and prolong equipment lifespan.
• Available in an array of materials, including cast iron, 316 stainless steel, duplex stainless steel, and bronze, with additional materials available upon request, offering unmatched versatility.
• Suction and discharge flanges comply with EN 1092-2 / PN 16, and for steel and stainless steel casings, conform to EN 1092-1 / PN 16, ensuring compatibility and reliability.
• Offers an array of seal options, including gland packing, and single, double, and cartridge mechanical seals, tailored to your requirements.
• Compatible with three-phase 50hz / 60hz motors, with IP55 protection as standard, ensuring robust performance.
• ATEX version available upon request, providing added safety for explosive environments.
• Available with independent certification upon request, assuring quality and compliance.
• Proudly manufactured in accordance with EN 22858 / ISO 2858 standards, guaranteeing reliability and excellence.
• Features low NPSH, ensuring smooth and efficient pump operation.
• Designed for assembly without alignment, simplifying installation and reducing setup time.
• All impellers are meticulously balanced to ISO 1940 class 6.3, ensuring optimal performance and longevity.
• Long coupled with a baseplate, offering stability and ease of installation.
• Option to install an API Seal according to API682, enhancing safety and performance.
• Equipped with oil-lubricated ball bearings, ensuring smooth operation and extended service life.
| 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 are equipped with esteemed brand bearings, ensuring remarkable durability even under challenging conditions. These bearings not only elevate the longevity of SS304/316 Horizontal Flood Pump with External Cooling and Mechanical Seal but also maintain peak performance when exposed to demanding environments.
To expertly balance axial thrust, most impellers come equipped with strategically positioned wear rings at both the front and back, coupled with a balance hole on the rear shroud. However, for certain pumps where axial thrust is minimal, these features are not required, showcasing a design perfectly tailored to various engineering needs.
Our high-precision cast impellers, crafted from robust materials such as cast iron, stainless steel, and bronze, promise unmatched performance and reliability, positioning them as the cornerstone of exceptional pump efficiency.
Our meticulously engineered systems fall into two primary categories:
1) "Flush" - An innovative system where clean, cool liquid is seamlessly injected into the seal chamber, elevating the operating environment. Equipped with a secondary, downward-oriented port, it provides essential leakage observation or venting, ensuring smooth operations.
2) "Barrier or Buffer" with dual seals - This advanced mechanism introduces a secondary fluid between two mechanical seals, ingeniously preventing ambient air intrusion, optimizing seal cooling, and significantly enhancing overall safety.
Noteworthy is the fact that not all mechanical seals necessitate specialized external flush arrangements, demonstrating our commitment to tailored solutions.
Flexible couplings
In contrast to rigid couplings, flexible couplings excel at accommodating slight movements, vibrations, and thermal expansions without incurring damage. They are indispensable for applications with inevitable misalignments between drive and pump shafts. Additionally, their vibration absorption capability is key in lowering excessive operational noise. Despite a more intricate and pricier design, these couplings yield significant maintenance savings over time by safeguarding the shaft and bearings against wear and damage.
Shanghai Semhai Pump Co., Ltd. proudly incorporates API 671 Standard Disc Couplings in its API standard chemical pumps, setting a benchmark for precision and reliability.
Our couplings boast lower reaction loads combined with superior balancing quality than conventional ones, significantly amplifying the efficiency and effectiveness of the entire pump power transmission.
| 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 |
Renowned Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. proudly maintains enduring partnerships with several prestigious domestic pump-testing organizations, demonstrating our unwavering commitment to quality and innovation. Our esteemed collaborators include:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang city, is acknowledged for its stringent standards and expertise.
The Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, based in Zhenjiang City, offers comprehensive assessments tailored to irrigation technologies.
The Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, situated in Chongqing city, delivers specialized evaluations to enhance agricultural efficiency and sustainability.
The Shanghai Mechanical and Electrical Products Quality Inspection Center, located in Shanghai city, is an authority in ensuring the highest standards for mechanical and electrical products. These alliances underscore our dedication to quality assurance and industry excellence.
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