Introducing the SLZ end suction, long coupled, single stage centrifugal chemical process pump, a marvel of engineering excellence standardized to EN 22858 / ISO 2858 for versatile use across industrial and marine landscapes. Tailored to expertly handle low viscosity clean or slightly contaminated liquids, this pump is adept in scenarios devoid of solids and fibrous materials. From the gentle flow of fresh and sea water to the vigorous transfer of fuels like diesel, petrol, and kerosene, its application spectrum is vast. Whether fueling energy plants, mining operations, fire fighting strategies, irrigation systems, water supply and treatment facilities, or even marine endeavors, this pump is your reliable partner.
This robust and formidable centrifugal chemical process pump is designed to tackle large-scale operations with its impressive high flow and pressure capabilities, making it an ideal choice for demanding environments.
The ingenious design of the long coupled centrifugal chemical process pump offers a plethora of advantages, enhancing operational efficiency and durability.
With its long coupled configuration, maintenance becomes a breeze. The design allows seamless access to the pump head without the hassle of detaching the motor, simplifying operational upkeep.
Built to withstand the test of time, this process pump boasts robustness and endurance, engineered for continuous operation. Additional bearings within the pump head significantly reduce motor strain, ensuring longevity and reliability.
The innovative back pull out design revolutionizes maintenance, allowing the motor to be detached while the pump remains connected to the pipework. This strategic feature saves valuable time during service or maintenance activities.
Designed with independent shafts for the pump and motor, this centrifugal chemical process pump stands resilient. In the rare event of a shaft break, only the pump shaft needs replacement, a stark contrast to less durable models that necessitate motor replacement.
The long coupled design strategically safeguards the motor, creating a protective barrier against fluid ingress in the unlikely event of seal failure, thus prolonging motor life.
Product Summary
• Capable of efficiently pumping an extensive range of clean, low viscosity, or slightly contaminated fluids.
• Available with either closed or semi-open impeller designs to match specific needs.
• Innovative back pull out design ensures maintenance is swift and hassle-free.
• Designed to handle fluids with a maximum temperature of 175°C, perfect for various industrial requirements.
• Features a heavy-duty shaft that remains untouched by fluid, enhancing durability.
• Equipped with an external seal cooling system for optimized performance.
• Distinctive independent pump and motor shafts for superior reliability.
• Available in materials like cast iron, 316 stainless steel, duplex stainless steel, bronze, and customizable options upon request.
• Suction and discharge flanges conform to EN 1092-2 / PN 16, while steel and stainless steel casings adhere to EN 1092-1 / PN 16 standards.
• Offers gland packing along with single, double, and cartridge mechanical seal options for tailored sealing solutions.
• Three-phase motors available in 50Hz / 60Hz with IP55 as standard, adaptable to various power requirements.
• ATEX version available upon request, accommodating specific safety regulations.
• Independent certification can be provided upon request, ensuring compliance and quality assurance.
• Manufactured in strict accordance with EN 22858 / ISO 2858 standards, reflecting superior craftsmanship.
• Exhibits low NPSH, enhancing operational efficiency and performance.
• Facilitates assembly without alignment, streamlining setup processes.
• All impellers are meticulously balanced to ISO 1940 class 6.3, ensuring smooth operation.
• Comes long coupled with a sturdy baseplate for stable and reliable performance.
• Option to install an API seal conforming to API682, delivering advanced sealing solutions.
• Boasts oil-lubricated ball bearings, enhancing longevity and reducing 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 |
Renowned and reputable brand Bearings are integral components in our esteemed centrifugal pumps and chemical pumps lineup. Engineered for excellence, these bearings ensure an extended service life for our centrifugal pumps, even when faced with the most challenging and demanding working environments.
To expertly balance axial thrust, our pump design incorporates wear rings positioned both at the front and rear of most impellers, accompanied by a strategic balance hole on the back shroud of the impeller. For pumps where axial thrust remains minimal, these pumps exhibit an innovative design with no need for a rear wear ring and balance hole.
Our high-precision casting impeller guarantees unmatched performance and durability, crafted from premium materials such as cast iron, stainless steel, and bronze, ensuring excellence in every application.
Our solutions are broadly categorized into two main groups:
1) "Flush" - This involves injecting a clean, cool liquid into the seal chamber, significantly enhancing the operational environment. A secondary smaller port, typically orientated downward, serves as a critical leakage observation point or vent, ensuring optimal performance.
2) "Barrier or Buffer" used with dual seals - A secondary fluid is strategically introduced into the space between two mechanical seal sets. This prevents ambient air contact with the pumped fluid, dramatically improves seal cooling, and elevates safety standards.
It's important to note that not every mechanical seal configuration necessitates specialized external flush arrangements, offering versatility in application.
Flexible couplings
In contrast to their rigid counterparts, flexible couplings excel in handling movements such as vibrations and thermal expansion without sustaining damage. They are ideal for applications with inherent misalignment between the drive and pump shafts. Their superior ability to absorb vibrations also addresses and reduces excessive operational noise. Although boasting a complex and cost-intensive design, flexible couplings provide long-term maintenance savings by safeguarding the shaft and bearings from damage and premature wear.
Our Semhai API standard chemical pumps are equipped with API 671 Standard Disc Couplings, promising peak reliability and compliance.
These couplings offer lower reaction loads paired with an exceptional balancing quality, surpassing standard couplings, thus enhancing the overall efficiency and effectiveness of 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 |
Professional Cooperation Agencies
In a remarkable demonstration of industrial synergy and excellence, this company has fostered enduring partnerships with numerous leading domestic pump-testing institutions. These alliances enhance the company's commitment to quality and innovation.
The esteemed National Quality Supervision and Inspection Center of Industrial Pumps, located in the bustling Tiexi District of Shengyang City,
The renowned Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, situated in the vibrant Zhenjiang City,
The respected Ministry of Agriculture, Water Pump Quality Supervision and Testing Center, based in the dynamic Chongqing City,
The illustrious Shanghai Mechanical and Electrical Products Quality Inspection Center, nestled in the heart of Shanghai City, and more.
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