Introducing the SLZ end suction, long coupled, single stage centrifugal chemical process pump—engineered to perfection and fully standardized to EN 22858 / ISO 2858. This powerhouse is designed to seamlessly operate across a plethora of industrial and marine applications. Whether it's fresh water, sea water, or diverse fuels such as diesel, petrol, and kerosene, this pump excels without the interference of solid or fibrous contaminants. With its outstanding versatility, it's the go-to choice for fuel transfer, chemical processing, energy plants, mining, fire fighting, irrigation, and much more. From water supply and treatment to pressurization and dewatering, this pump stands robust and reliable in every sector, including marine applications.
This is a large, heavy-duty centrifugal chemical process pump that boasts impressive high-flow and high-pressure capabilities, built to tackle even the most demanding industrial tasks.
Discover the multitude of benefits that come with the long coupled centrifugal chemical process pump design, offering unparalleled efficiency and reliability.
The long coupled configuration ensures maintenance is a breeze, allowing easy access to the pump head without needing to detach the motor, optimizing service and uptime.
Designed for durability and continuous operation, this process pump's robust construction incorporates additional bearings in the pump head. These bearings significantly alleviate the motor's operational strain, ensuring longevity and consistent performance.
Thanks to its innovative back pull out design, the motor can be effortlessly removed while the pump remains connected to the pipework, dramatically reducing maintenance time and boosting efficiency.
Featuring independent shafts for both the pump and motor, this design ensures that only the pump shaft requires replacement if a break occurs. This strategic separation avoids the costly replacement of the entire motor, unlike less robust market alternatives that use a shared motor shaft.
The strategic long coupled design creates a significant protective space between the pump and motor, safeguarding the motor against fluid ingress should a seal failure occur, enhancing both safety and reliability.
Product Summary
• Capable of handling a broad spectrum of clean, low-viscosity, or slightly contaminated fluids with unmatched efficiency.
• Choose between a closed or semi-open impeller to best suit your operational needs.
• Equipped with a back pull out design for rapid and straightforward maintenance, minimizing downtime.
• Supports a maximum fluid temperature of up to 175°C, demonstrating its high-performance resilience.
• Features a robust, heavy-duty shaft that remains untouched by the fluid, ensuring extended longevity.
• Offers an external seal cooling system, enhancing operational efficiency and thermal management.
• Independent pump and motor shafts ensure easy maintenance and reduce replacement costs.
• Available in a variety of materials, including cast iron, 316 stainless steel, duplex stainless steel, and bronze, with other options available upon request to suit specific needs.
• Suction and discharge flanges adhere to EN 1092-2 / PN 16 standards, with options for EN 1092-1 / PN 16 for steel and stainless steel casings, ensuring compatibility and reliability.
• Choose from gland packing, or single, double, and cartridge mechanical seal options to tailor the pump to your precise requirements.
• Powered by robust three-phase 50hz / 60hz motors, with IP55 as standard, guaranteeing reliable performance in diverse conditions.
• An ATEX-compliant version is available upon request, catering to environments with explosive atmospheres.
• Independent third-party certification is available upon request, assuring quality and compliance with industry standards.
• Manufactured in strict accordance with EN 22858 / ISO 2858 standards, ensuring durability and consistency.
• Features low NPSH characteristics for enhanced performance.
• Allows for assembly without alignment, simplifying installation and setup.
• All impellers are meticulously balanced according to ISO 1940 class 6.3, ensuring smooth operation.
• Long coupled with a sturdy baseplate, providing stability and ease of use.
• An API Seal can be installed as per API682 standards, enhancing sealing performance.
• Utilizes oil-lubricated ball bearings for superior durability and reduced maintenance needs.
| 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 renowned brand bearings, ensuring remarkable durability even amidst the most challenging working conditions. Expect a longer service life from our robust pumps, delivering reliability where it's needed most.
Strategically engineered to balance axial thrust, our design includes wear rings at both the front and rear of the impeller, complemented by a precision-engineered balance hole situated on the impeller's back shroud. For pumps where axial thrust is minimal, the innovative design omits the wear ring and balance hole, streamlining efficiency without compromising performance.
Crafted with high-precision casting techniques, our impellers guarantee top-tier performance. Available in cast iron, stainless steel, and bronze, these materials ensure durability and optimal functionality.
Our solutions are categorized into two primary groups:
1) "Flush" - A pristine, cool liquid is meticulously introduced into the seal chamber to create an optimal operating environment. A secondary, strategically placed port, typically oriented downward, serves dual functions as a leak observation point or a vent opening.
2) "Barrier or Buffer" design for dual seals - This ingenious setup introduces a secondary fluid to the inter-seal space, effectively preventing ambient air from interfacing with the pumped fluid. This enhances seal cooling and elevates safety standards.
It's important to note that not every mechanical seal demands a specialized external flush arrangement.
Versatile Couplings
Unlike their rigid counterparts, flexible couplings adeptly handle movement, such as vibrations and thermal expansion, without sustaining damage. This flexibility makes them perfect for scenarios with slight misalignment between drive and pump shafts. Additionally, they excel at mitigating excessive operating noise due to their vibration-absorbing properties. Despite a more intricate and costly design, their ability to shield shafts and bearings from damage and premature wear translates into substantial maintenance savings over time.
Our Semhai API standard chemical pumps are equipped with state-of-the-art API 671 Standard Disc Couplings.
Our advanced couplings offer reduced reaction loads and superior balancing quality compared to conventional options. This results in enhanced efficiency and effectiveness throughout 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 |
Prestigious Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has proudly established long-lasting and robust partnerships with a selection of the nation's premier pump-testing institutions, ensuring unparalleled quality and performance. Among these esteemed collaborations are:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shenyang City, a hallmark of excellence and precision.
The Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, based in Zhenjiang City, known for its stringent quality measures.
Ministry of Agriculture's Water Pump Quality Supervision and Testing Center in Chongqing City, a leader in agricultural equipment testing.
Shanghai Mechanical and Electrical Products Quality Inspection Center, situated in Shanghai City, a beacon of innovation and reliability, among others.
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