In the field of industrial water treatment, especially for industrial reverse osmosis systems that demand stable high-pressure fluid transfer, selecting reliable Water Treatment Consumables is crucial to ensuring efficient and long-term operation. The DHP 11 Axial Piston Pump, jointly developed by Wuxi Fenigal Science and Technology (FENIGAL) and its OEM partner Shenzhen CW Environment Technology, stands out as a high-performance high-pressure pump tailored for industrial reverse osmosis, and it is also an indispensable high-quality option in the category of Water Treatment Consumables.
The DHP 11 Axial Piston Pump is specifically engineered to convey high-pressure, low-viscosity corrosive fluids in industrial reverse osmosis scenarios. It plays a vital role in applications such as high-salinity wastewater concentration, seawater/brackish water desalination, and landfill leachate treatment – all of which rely heavily on high-quality Water Treatment Consumables to maintain system integrity.
At the heart of its design is the axial piston principle: plungers move reciprocally parallel to the drive shaft within plunger bores, creating volume changes that enable efficient fluid transfer. A key advantage that elevates it among Water Treatment Consumables is its fluid self-lubrication technology, which eliminates the need for a lubricating oil tank. This not only simplifies maintenance but also prevents oil leakage from contaminating the water treatment system – a critical concern for maintaining water purity. Additionally, the pump integrates a check valve that ensures one-way fluid flow from the inlet to the outlet when the pump is stopped, enhancing overall system safety and reducing the risk of damage to other Water Treatment Consumables in the setup.
As a core model in the DHP series, the DHP 11 inherits the series’ signature strengths of high efficiency, corrosion resistance, and low noise – all essential traits for top-tier Water Treatment Consumables. Its components are crafted from 2205 duplex stainless steel (SAF 2205 / EN 1.4462 / UNS 31803), a material renowned for its excellent resistance to salt spray and corrosion from high-concentration NaCl media. This corrosion resistance ensures the pump’s longevity even in harsh water treatment environments, making it a durable investment among Water Treatment Consumables. During operation, the pump generates significantly less pulsation than other pump types, resulting in minimal vibration and noise (≤85 dB(A) per EN ISO 3744-2010, measured at maximum pressure and speed). Its compact structure allows direct installation on a motor or internal combustion engine, making it suitable for industrial sites with limited space – a practical feature that complements other space-sensitive Water Treatment Consumables.
For users selecting Water Treatment Consumables, clear and detailed technical parameters are essential to ensure compatibility with existing systems. The DHP 11’s parameters are optimized to meet the demands of industrial reverse osmosis, as shown in the table below:
As a fixed-displacement axial piston pump, the DHP 11’s flow rate is proportional to the input shaft speed – a key feature that makes it adaptable to varying water treatment demands, a valuable attribute for Water Treatment Consumables. Users can achieve the required flow rate by adjusting the speed, and the corresponding motor speed can be calculated using the formula:
Selected Motor Speed (r/min) = (Required Flow Rate (m³/h) × Rated Speed (r/min)) / Rated Flow Rate (m³/h)
For example, at 700 rpm, the pump delivers approximately 5 m³/h of flow, while at the rated 1500 rpm, it reaches 11 m³/h. This flexibility allows it to match the dynamic needs of different industrial reverse osmosis processes, ensuring optimal performance alongside other Water Treatment Consumables.
The power consumption of the DHP 11 varies with operating pressure, which is a critical factor for users managing energy costs in water treatment systems. The table below outlines its power requirements at typical pressures, helping users select the appropriate motor and integrate it efficiently with other Water Treatment Consumables:
Proper installation and operation are not only vital for the DHP 11’s performance but also for safeguarding other Water Treatment Consumables in the system. Here are the core guidelines:
Industrial reverse osmosis media (e.g., high-salinity wastewater) may contain tiny particles that can damage the pump’s internal precision components. To prevent this, a 10 μm (absolute accuracy) depth filter must be installed at the pump’s inlet – a necessary supporting Water Treatment Consumable. This filter should have a 99.98% filtration efficiency for particles larger than 10 μm (β10>5000). Spiral-wound filter elements are recommended, as bag filters (with only 90% efficiency) cannot provide sufficient protection, which may lead to premature wear of the pump and other Water Treatment Consumables.
- A low-pressure control switch (set to 1 Bar) must be installed at the inlet to automatically shut down the pump if pressure drops below 1 Bar, preventing cavitation that can damage the pump and disrupt the performance of downstream Water Treatment Consumables.
- A high-pressure control switch (set to 70 Bar) should be placed between the pump’s outlet and the reverse osmosis membrane to stop the pump in case of overpressure, protecting the membrane – a costly Water Treatment Consumable.
- A safety valve is also mandatory to prevent instantaneous pressure spikes from damaging the system after startup.
Before starting the pump:
- Thoroughly flush pipelines and the system to remove debris that could clog the pump or other Water Treatment Consumables.
- Discharge air from the pump and system to avoid cavitation.
- Confirm the pump’s rotation direction matches the arrow on the pump body.
- Critical Note: Never start the pump with the outlet valve closed, as this may trigger the safety valve or cause pipeline bursts, damaging the pump and surrounding Water Treatment Consumables.
The DHP 11’s dimensions are designed for easy integration with industrial water treatment setups. Its inlet and outlet feature M52×1.5 threads (17 mm depth), requiring matching high-pressure pipe fittings (another essential Water Treatment Consumable). When paired with a frequency conversion motor, the complete equipment’s dimensions vary by motor power, as shown below:
Proper maintenance ensures the DHP 11 – a valuable Water Treatment Consumable – delivers long-term performance, while reliable warranty services provide peace of mind.
- Daily Maintenance: If abnormal noise or vibration occurs, stop the pump immediately for inspection. In high-salinity environments (e.g., seawater desalination), flush the pump cavity with fresh water after each shutdown to remove concentrated brine, preventing crystallization that can damage seals and plungers (critical components that, if worn, require replacement as Water Treatment Consumables).
- Shutdown Maintenance: For short-term shutdowns (≤3 days), keep the pump filled with medium (no flushing needed). For medium-term shutdowns (3～15 days), flush with fresh water. For long-term shutdowns (>15 days), use fresh water with a bactericide to prevent microbial growth that could harm the pump and other Water Treatment Consumables.
- Regular Inspection: After 8,000 hours of operation, conduct a comprehensive inspection and replace worn parts (e.g., seal plates, plunger sleeves) – essential Water Treatment Consumables for maintaining pump performance.
FENIGAL provides comprehensive support for this Water Treatment Consumable, as outlined below:
- Strong Scenario Adaptability: Tailored for industrial reverse osmosis, it resists high-salinity corrosion and meets the needs of seawater desalination, wastewater zero discharge, and refractory wastewater treatment – all relying on its performance as a core Water Treatment Consumable.
- Stable & Efficient Performance: The axial piston principle and self-lubrication technology ensure no oil pollution, low noise, and stable operation at 80 Bar, making it a reliable Water Treatment Consumable.
- Easy Installation & Maintenance: Its compact design saves space, and simple maintenance reduces costs associated with other Water Treatment Consumables.
- Reliable After-Sales Support: Comprehensive warranty and spare parts services ensure long-term support for your water treatment system.
For industrial reverse osmosis systems in need of a high-quality high-pressure pump – a critical Water Treatment Consumable – the DHP 11 Axial Piston Pump is an excellent choice. To learn more or inquire about Selection,contact FENIGAL today:
- Address: Chuangyi Industry Park, No. 100 Dicui Road, Binhu District, Wuxi City, Jiangsu Province, China
- Tel: +86 - 510 - 85163211
- Email: sales@fgwater.com
