Introducing the SLZ end suction, long coupled, single stage centrifugal chemical process pump, meticulously engineered in adherence to EN 22858 / ISO 2858 standards. This versatile powerhouse is your go-to solution for diverse industrial and marine applications. Designed to handle low viscosity, clean, or slightly contaminated fluids, it masterfully manages liquids free from solids or fibrous debris. It's the ideal choice for essential processes involving fresh water, sea water, and various fuels like diesel, petrol, and kerosene. From fuel transfer and chemical processing to energy plants, mining, firefighting, irrigation, water supply, treatment, pressurization, grey water handling, dewatering, and marine applications, this pump stands unmatched in performance and reliability.
Experience the might of this large, robust centrifugal chemical process pump, engineered for high flow and pressure capabilities, meeting the demands of rigorous operations.
The brilliantly crafted long coupled centrifugal chemical process pump design offers unrivaled benefits that enhance operational efficiency and reliability.
Enjoy the simplicity of maintenance with the long coupled configuration, allowing seamless access to the pump head without the need to detach the motor, ensuring hassle-free serviceability.
Built for durability and continuous operation, this process pump integrates additional bearings in the pump head, effectively relieving the motor of excessive strain, thereby ensuring longevity and stable performance.
With the innovative back pull out design, the pump facilitates effortless maintenance by allowing motor removal while keeping the pump connected to the pipework, thus saving valuable time during service routines.
Boasting independent shafts for the pump and motor, this centrifugal chemical process pump only requires pump shaft replacement upon breakage, unlike less resilient counterparts that necessitate entire motor replacement, enhancing cost-efficiency and sustainability.
The thoughtfully designed long coupled structure provides ample space between the pump and motor, effectively safeguarding the motor against fluid ingress, even in the event of a seal failure, ensuring enhanced protection and reliability.
Product Summary
• Expertly pumps a broad spectrum of clean, low viscosity, or slightly contaminated fluids.
• Choose between closed or semi-open impeller options to suit your specific requirements.
• Innovative back pull out design guarantees swift and effortless maintenance procedures.
• Capable of handling fluids with maximum temperatures up to 175°C.
• Features a heavy-duty shaft expertly designed to avoid fluid contact, ensuring longevity.
• Optional external seal cooling system available for enhanced performance.
• Distinct independent shafts for pump and motor, enhancing operational integrity.
• Available in a variety of materials, including cast iron, 316 stainless steel, duplex stainless steel, and bronze, with customization options on request.
• Conformance to EN 1092-2 / PN 16 for suction and discharge flanges; EN 1092-1 / PN 16 for steel and stainless steel casings.
• Versatile sealing options including gland packing and single, double, and cartridge mechanical seals.
• Equipped with three-phase 50Hz / 60Hz motors, IP55 as the standard for optimal performance.
• ATEX version available upon specific request, catering to specialized applications.
• Choose independent certification upon request, ensuring compliance with industry standards.
• Precision manufactured in full alignment with EN 22858 / ISO 2858 standards.
• Engineered for low NPSH requirements, maximizing efficiency.
• Effortless assembly without the need for alignment, simplifying installation.
• All impellers are meticulously balanced according to ISO 1940 class 6.3, ensuring smooth operation.
• Long coupled design complete with a sturdy baseplate for secure installation.
• API Seal option available, compliant with API682 standards for superior sealing performance.
• Oil lubricated ball bearings are incorporated to ensure smooth, efficient operation and extended lifespan.
| 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 pumps and chemical pumps showcase renowned brand bearings, ensuring a remarkable extension of service life even under the harshest working conditions.
To expertly balance axial thrust, most impellers are equipped with wear rings both at the front and back, alongside a meticulously designed balance hole on the back shroud. In some pumps with minimal axial thrust, the absence of a back wear ring and balance hole is strategically implemented.
Crafted with high-precision casting, the impeller promises exceptional performance and is available in materials such as cast iron, stainless steel, and bronze.
Our systems are generally categorized into two prominent groups:
1) "Flush" system - Delivers a pristine, cool liquid into the seal chamber, enhancing the operating environment. A secondary, smaller port, usually positioned downward, acts as a leakage observation or vent opening, ensuring optimal monitoring.
2) "Barrier or Buffer" systems for dual seals - An auxiliary fluid is introduced into the space between dual mechanical seals to prevent ambient air from contacting the pumped fluid, thereby boosting seal cooling and ensuring superior safety.
It's important to note that many mechanical seals function efficiently without necessitating specialized external flush arrangements.
Ergonomic Flexible Couplings
Flexible couplings, unlike their rigid counterparts, adeptly handle movements such as vibrations and thermal expansions without incurring damage. Ideal for applications with unavoidable misalignment between drive and pump shafts, they adeptly absorb vibrations and significantly reduce operational noise. While these couplings are characterized by a more intricate and costly design, they provide long-term maintenance savings by safeguarding shafts and bearings against wear and damage.
Semhai API standard chemical pumps are equipped with API 671 Standard Disc Couplings for superior performance.
Experience reduced reaction loads and superior balancing quality with our advanced couplings, enhancing the overall 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 |
Collaborative Ventures with Esteemed Professional Agencies
Shanghai Semhai Pump Co., Ltd. has proudly fostered enduring partnerships with a multitude of premier domestic pump-testing institutions, including:
The National Quality Supervision and Inspection Center of Industrial Pumps located in the vibrant Tiexi District of Shengyang City,
The distinguished Irrigation Machinery Products Quality Inspection Center of Machinery Industrial situated in Zhenjiang City,
The esteemed Ministry of Agriculture, Water Pump Quality Supervision and Testing Center nestled in Chongqing City,
And the reputable Shanghai Mechanical and Electrical Products Quality Inspection Center based in the bustling Shanghai City, among others.
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