Unveiling the SLZ End Suction Pump: a superior choice for fluid management, this long coupled, single stage centrifugal chemical process pump adheres to EN 22858 / ISO 2858 standards. Tailored for versatility, it seamlessly serves a myriad of applications within industrial and marine domains. Engineered to handle low viscosity fluids, whether pristine or slightly tainted, this pump excels in maintaining purity by excluding solid and fibrous elements. Ideal for fresh and sea water, as well as fuels such as diesel, petrol, and kerosene, it is your go-to solution for fuel transfer, chemical processing, energy plants, mining, fire fighting, irrigation, water supply, water treatment, pressurization, grey water management, dewatering, and marine operations.
Introducing a robust, high-capacity centrifugal chemical process pump designed for exceptional flow and pressure performance, tackling demanding operational needs with remarkable efficiency.
Experience the advantages of the long coupled centrifugal chemical process pump design, crafted to elevate performance and reliability.
Designed for effortless upkeep, the long coupled configuration allows for straightforward access to the pump head without necessitating motor removal, simplifying maintenance tasks.
Built for endurance, this process pump features additional bearings within the pump head, mitigating motor strain during continuous operation and ensuring unwavering robustness.
Enjoy unparalleled convenience with the back pull-out design, which permits motor removal while maintaining pipework connection, dramatically reducing service and maintenance time.
The pump and motor boast independent shafts; only the pump shaft requires replacement if damaged, unlike competitors needing full motor replacement, translating to cost-effectiveness and longevity.
The long coupled design ensures a protective buffer between pump and motor, safeguarding the motor from fluid exposure in seal failure scenarios, thus enhancing durability.
Product Summary
• Designed to adeptly handle a broad spectrum of clean low viscosity or slightly contaminated fluids with precision and efficiency.
• Choose between closed or semi-open impellers to suit your specific operational needs.
• Innovative back pull-out design facilitates swift and easy maintenance operations.
• Withstand extreme temperatures with a maximum fluid temperature tolerance of 175°C.
• Heavy-duty shaft crafted to remain untouched by fluid contact, ensuring longevity.
• Enhance operational stability with an optional external seal cooling system.
• Featuring independent pump and motor shafts to streamline maintenance procedures.
• Available in durable materials: cast iron, 316 stainless steel, duplex stainless steel, bronze, and more upon request.
• Suction and discharge flanges meet EN 1092-2 / PN 16 standards; also available per EN 1092-1 / PN 16 for steel and stainless steel casings.
• Customize your sealing solution with gland packing or single, double, and cartridge mechanical seal options.
• Equipped with three-phase 50Hz / 60Hz motors, IP55 as standard for robust functionality.
• ATEX-certified version available upon request, catering to specialized environments.
• Independent certification available upon request to ensure compliance and quality assurance.
• Meticulously manufactured in line with EN 22858 / ISO 2858 standards for guaranteed reliability.
• Engineered for low NPSH operation, ensuring minimal risk of cavitation and efficient performance.
• Simplified assembly without alignment requirements, saving time and enhancing ease of installation.
• Impellers precisely balanced to ISO 1940 class 6.3, ensuring smooth and efficient operation.
• Securely long coupled with a sturdy baseplate, offering stability and reliability.
• Optional API Seal installation available, conforming to API682 standards for optimal sealing solutions.
• Oil lubricated ball bearings ensure smooth operation and extended lifespan under demanding conditions.
| 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 bearings, celebrated for their exceptional quality, find their place in our distinguished centrifugal and chemical pumps. Designed to thrive, our pumps promise remarkable longevity even amidst the toughest working conditions.
To masterfully balance axial thrust, our impeller design incorporates strategically placed wear rings both at the front and back, coupled with a precisely positioned balance hole on the rear shroud. While some pumps feature minimal axial thrust, allowing for exclusions, others boast a tailored approach to ensure peak performance.
Our high-precision casting impellers are the epitome of excellence, crafted to perfection in materials such as cast iron, stainless steel, and bronze, ensuring unparalleled performance.
Discover two essential classifications:
1) "Flush" - An innovative method where clean, cool liquid is introduced into the seal chamber, creating a refined operating environment. Its dual-purpose secondary port, typically positioned downward, serves both as a leakage observer and a vent opening.
2) "Barrier or Buffer" - A sophisticated system designed for dual seals, supplying a secondary fluid between two mechanical seals. This technique masterfully prevents ambient air intrusion, optimizes seal cooling, and elevates safety standards.
It's noteworthy that not all mechanical seals demand exclusive external flush systems, highlighting the versatility and adaptability of our designs.
Introducing Flexible Couplings: A revolutionary solution for dynamic movement.
Flexible couplings, unlike their rigid counterparts, are engineered for adaptability. They seamlessly accommodate vibrations and thermal expansions, making them the preferred choice for applications with inevitable misalignment between drive and pump shafts. Their ability to absorb vibrations contributes to reduced noise during operation. While they boast a complex and premium design, the long-term maintenance savings, due to the protection of shafts and bearings from damage and premature wear, justify the investment.
Our Semhai API standard chemical pumps are equipped with API 671 Standard Disc Couplings, setting a benchmark in stability and performance.
These couplings offer reduced reaction loads and superior balancing quality, significantly enhancing the efficiency and effectiveness 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
Our company is proud to have cultivated enduring partnerships with several prominent domestic pump-testing institutions, ensuring our products meet the highest standards of quality and performance.
1. National Quality Supervision and Inspection Center of Industrial Pumps, located in Tiexi District, Shengyang City.
2. Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, based in Zhenjiang City.
3. Ministry of Agriculture, Water Pump Quality Supervision and Testing Center situated in Chongqing City.
4. Shanghai Mechanical and Electrical Products Quality Inspection Center, located in the bustling city of Shanghai.
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