Experience optimal efficiency and effortless maintenance:
SEMHAI Engines presents an extensive array of diesel engine solutions, perfectly suited for stationary applications including centrifugal pumps, hydraulic pumps, air compressors, and air generators. Our engine lineup features a versatile range of power options: choose from ION power spanning 415 kW to 920 kW or ICXN power ranging between 377 kW and 836 kW, all compliant with ISO 3046-1 standards. These engines are engineered to drive centrifugal pumps at variable speeds, with power consumption precisely aligned to each unique propeller curve. SEMHAI diesel engines stand out for their robust, reliable, and fuel-efficient performance, promising remarkable efficiency thanks to prolonged overhaul intervals and extended service life. Their optimized power density transforms our diesel engines into highly efficient and adaptable energy suppliers.
Exceptional Performance Features
1. Featuring three impeccable starting functions:
(1). Manual start function: Achieve manual start with a seamless manual-automatic interlock mechanism via a switch.
(2). Automatic-manual features: Allowance for three start attempts; if unsuccessful, a "starter failure alarm" triggers, exiting the start mode. Post successful initial start, reach rated load within 5-10-15 seconds based on unit capacity.
(3). Emergency manual direct start function: Enable manual direct start in emergencies when automatic control systems fail.
2. Automated operation: Upon receiving a valid fire signal, the diesel fire pump autonomously initiates if the pump cannot operate due to power system failures. Once power is restored or electric pumps are functional, it switches back to electric mode.
3. Automatic shutdown: The diesel fire-fighting pump gracefully shuts down with a delay when the fire signal ceases.
4. Self-charging battery function: The battery is automatically charged via diesel engine's electrical mains, ensuring seamless unit start-up.
5. Comprehensive indication system: Displays readiness to start, manual and automatic start, unit operation and shutdown, battery charging, speed monitoring, and alerts for lubrication oil pressure, turbocharger pressure, engine oil temperature, cooling water temperature, and fuel levels.
6. Comprehensive alarm and protection system: Alerts for three consecutive start failures, overspeed, low lubricant oil pressure, high cooling water temperature, lubrication oil temperature, automatic charging failures, battery voltage issues, and low fuel level.
7. Advanced display systems: Monitors engine oil pressure, engine speed, battery charge current, and charging voltage.
8. Direct-coupled design: High-flexible coupling connects the diesel engine and water pump on a shared base, ensuring compact structure, superior performance, reduced vibration, and easy on-site installation.
9. High-pressure, large-flow capacity: Choose from IS series single-stage single-suction, SOW series single-stage double-suction, or SHD series multistage pumps to cater to diverse fire-fighting scenarios.
10. Adjustable flow and pressure: Diesel pumps equipped with mechanical or electronic speed governors allow speed adjustments to ensure pump flow and head match actual requirements.
11. Water temperature pre-heating device: Fitted with an AC220V cooling water preheating system to ensure optimal operation below 5 ºC.
12. Dual battery circuit: Automatically switches to a backup battery in case of a primary battery failure.
13. Maintenance-free battery: Eliminates the need for frequent fluid supplementation.
14. Automatic Timing Inspection Test: Our fire system, typically in a standby state, confidently goes the extra mile by autonomously performing comprehensive device testing. This ensures that the system remains vigilant and primed, delivering timely alerts for standby conditions.
Note: These remarkable functions can be tailored perfectly to your specific requirements, providing a customizable design solution to satisfy any unique needs you may have.
Selection Configuration of Diesel Engine
1. The Pump: Choose from our expertly designed range including the IS series single-stage single-suction pump, the robust SOW series single-stage double-suction pump, the efficient SHD series multistage segment pump, and the ZW horizontal self-priming centrifugal pump, all engineered for excellence.
2. The Diesel Engine:
Our selection boasts international renowned brands of diesel engines, featuring options from single-cylinder to six-cylinder variations, with versatile speed ranges of 1500r/min, 1800r/min, 2400r/min, and 3000r/min to suit your precise needs.
3. Other Accessories: Enhance your system with our comprehensive suite of accessories including a robust filtration system, efficient silencer and cooling systems, a reliable fuel tank, common channel base, base fuel tank, radiator, battery, and charger for an all-encompassing solution.
4. The Control Cabinet: Equipped with cutting-edge components such as SBC, advanced PLC programming, sensors, and an automatic control cabinet, providing seamless control and monitoring capabilities.
| Engine Speed |
1500r/min; 1800r/min; 2400/min; 2800/min; |
| Engine power |
24HP-2220HP |
| Pump diameter |
50-500mm |
| Flow range |
10-2000L/s |
| Working pressure range |
0.2-2.2Mpa |
| Temperature range |
Ambient temperature ≤60'C; |
| Ambient atmospheric pressure |
> 90KPa |
| Transmission medium |
Water or other liquids physical and chemical properties similar to water; |
| Seal plumbing parts |
No installment when inlet pressure above 0.03Mpa (G) |
| Engine power selection |
Under non-normal conditions, diesel input power will be less than the rated power, it need to choice higher power diesel engine to support pump to ensure the normal operation |
This product boasts an international-renowned diesel engine, available in versatile configurations: single-cylinder, double-cylinder, four-cylinder, and six-cylinder options. The engine supports a varied speed range, including 1500r/min, 1800r/min, 2400r/min, and 3000r/min, promising adaptability and power for diverse operational needs.
Our SEMHAI heavy-duty coupling adaptors are expertly engineered to seamlessly connect diesel engines to drive pumps with precision and reliability, ensuring robust performance every time.
The coupling adaptors feature a user-friendly design that connects effortlessly to standard couplings, making installation a breeze without the need for alignment tools. Constructed from polyamide nylon fortified with fiberglass, they offer exceptional torsional rigidity and require zero maintenance, ideal for hydrostatic drives in construction equipment, harvesters, and forestry machinery.
SEMHAI's Diesel Plus Fire Pump Controllers are engineered to perfection, offering advanced control and monitoring for both 12 and 24-volt diesel fire pump engines. These controllers stand at the forefront of technical innovation in diesel engine management solutions.
Innovative Features
Operates seamlessly with a Universal Supply Voltage ranging from 100Vac to 240Vac, ensuring flexibility and adaptability across various systems.
Equipped with Dual Output capabilities of 12 or 24 Vdc, easily selectable via DIP Switch, to cater to your specific power requirements.
Comprehensive Communications via USB Port / Drive
Effortlessly transfer data to or from portable USB devices, simplifying data management and accessibility.
Integrated Web Pages*
Conveniently view real-time status, data values, programmed set points, and history with embedded web pages for streamlined monitoring.
Direct Ethernet Connection* for seamless data transfer and computer interface, enhancing operational efficiency.
Robust RS485 Port* for reliable connectivity
MODBUS Communication* - This feature requires ordering the COM Option to unlock its full potential, offering advanced communication capabilities.
Introducing the New Big Volume Dual Wall Diesel Subbase Generator Fuel Tank; engineered for superior capacity and reliability.
Our robust engine mounts effectively isolate vibrations in marine and industrial applications, significantly reducing noise levels in both mobile and stationary equipment. Crafted from high-grade industrial materials, these mounts offer unmatched durability and extend the lifespan of your machinery.
Our professional-grade gearboxes are meticulously designed for direct mounting onto diesel engines, offering versatile speed adjustments for a variety of applications. The input side accommodates either an SAE housing with a fixed coupling (Rubber Block Drive) or an interchangeable BD or BDS clutch, delivering reliable performance tailored to your needs.
Industry - Perfectly suited for boiler feed water systems and cooling systems, ensuring efficient and reliable operation in industrial settings.
Smelting - Ideally designed for water circulation and cooling systems, providing superior performance in smelting processes.
Fire-fighting - Essential for fire hydrant systems, sprinkler systems, spray cooling systems, foam systems, and water monitor systems, guaranteeing safety and efficiency in critical situations.
Ocean - Vital for wild water supply systems and island freshwater collection systems, offering robust solutions for challenging oceanic environments.
Heating - Proven effectiveness in water circulation and cooling systems, enhancing the performance of heating applications.
Municipal - Perfect for emergency drainage and water supply, ensuring rapid response to municipal needs with reliability and efficiency.
Agriculture - Superior choice for irrigation and drainage systems, supporting agricultural productivity with dependable water management solutions.
Professional Cooperation Agencies
This esteemed company, Shanghai Semhai Pump Co., Ltd., has cultivated enduring partnerships with numerous distinguished domestic pump-testing institutions. We have strategically aligned ourselves with top-tier organizations to ensure unparalleled precision and reliability in our product assessments. We proudly collaborate with entities such as:
The National Quality Supervision and Inspection Center of Industrial Pumps, located in the dynamic Tiexi District of Shengyang city.
The esteemed Irrigation Machinery Products Quality Inspection Center of Machinery Industrial, positioned in the industrious Zhenjiang City.
The authoritative Ministry of Agriculture's Water Pump Quality Supervision and Testing Center, based in the vibrant Chongqing city.
The renowned Shanghai Mechanical and Electrical Products Quality Inspection Center, situated in the bustling metropolis of Shanghai city, and many other esteemed institutions.
Audited Supplier 
){kind=link}