In industrial water treatment systems, especially high-demand industrial reverse osmosis setups, the quality of Water Treatment Consumables directly determines the system’s stability, efficiency, and service life. The DHP 13.5 Axial Piston Pump, co-developed by Wuxi Fenigal Science and Technology Co., Ltd. and its OEM partner Shenzhen CW Environment Technology, is a high-performance high-pressure pump tailored for industrial reverse osmosis. As a critical component in Water Treatment Consumables, it solves the core challenge of conveying high-pressure, low-viscosity corrosive fluids, making it indispensable for scenarios like seawater desalination and wastewater zero-liquid discharge.
The DHP 13.5 Axial Piston Pump is engineered to meet the rigorous demands of industrial reverse osmosis systems, where reliable fluid conveyance is non-negotiable. It excels in handling high-pressure, low-viscosity corrosive fluids, including those in seawater/brackish water desalination, industrial wastewater zero-liquid discharge salt concentration, and landfill leachate treatment – all of which rely on premium Water Treatment Consumables to maintain performance.
At its core, the pump operates on the axial piston principle: plungers move reciprocally parallel to the drive shaft within plunger bores, creating volume changes that enable efficient fluid transfer. A defining advantage that sets it apart from ordinary Water Treatment Consumables is its fluid self-lubrication technology. Unlike traditional plunger pumps that require a lubricating oil tank, the DHP 13.5 uses the conveyed liquid as the lubricant, eliminating the risk of oil leakage entirely. This is a game-changer for reverse osmosis systems where medium purity is critical, as it prevents oil contamination from compromising water quality.
Additionally, the pump integrates a standard flush check valve. When the pump stops, this valve ensures one-way fluid flow from inlet to outlet, preventing medium backflow that could damage the pump body and reverse osmosis membranes – another expensive Water Treatment Consumable. As an important model in the DHP series, it inherits the series’ core traits:
- Corrosion Resistance: Key components are made of 2205 duplex stainless steel (SAF 2205 / EN 1.4462 / UNS 31803), offering exceptional resistance to high-salt media, a common challenge in water treatment.
- High Efficiency: The optimized plunger design minimizes energy loss, ensuring maximum fluid transfer efficiency even under high pressure.
- Low Noise: Pulsation is significantly lower than centrifugal pumps, and the optimized plunger count further reduces vibration, resulting in a noise level of ≤85 dB(A) (per EN ISO 3744-2010) – ideal for industrial sites where noise control is a priority.
Its compact structure allows direct installation on motors or internal combustion engines, saving valuable space and simplifying integration with existing Water Treatment Consumables and systems.
For users selecting Water Treatment Consumables, accurate technical parameters are essential to ensure compatibility and optimal performance. The DHP 13.5’s parameters are tailored to industrial reverse osmosis needs, as detailed in the table below:
As a fixed-displacement axial piston pump, the DHP 13.5’s flow rate has a strict proportional relationship with the input shaft rotation speed – a key feature that enhances its adaptability as a Water Treatment Consumable. Users can adjust the motor speed to match the system’s required flow rate using the formula:
Selected Motor Rotation Speed (r/min) = (Required Flow Rate (m³/h) × Rated Rotation Speed (1500 r/min)) / Rated Flow Rate (13.5 m³/h)
For example, at 700 rpm, the pump delivers approximately 6 m³/h of flow, while at the rated 1500 rpm, it reaches 13.5 m³/h. This flexibility allows it to adapt to dynamic water treatment processes, ensuring consistent performance alongside other Water Treatment Consumables.
Power consumption is a critical consideration for industrial water treatment systems, and the DHP 13.5’s power requirements are optimized for efficiency. The table below outlines its power values at typical pressures, helping users select the right motor and avoid overload – a key step in protecting both the pump and other Water Treatment Consumables:
Proper installation and operation are vital to maximizing the DHP 13.5’s lifespan and preserving the integrity of other Water Treatment Consumables in the system. Below are the core guidelines:
Industrial reverse osmosis media (e.g., high-salt wastewater) often contains tiny particles that can damage the pump’s internal precision components (such as plunger-sleeve clearances). To prevent this, a 10 μm absolute accuracy depth filter (a critical supporting Water Treatment Consumable) must be installed at the pump’s inlet. This filter must achieve 99.98% filtration efficiency for particles larger than 10 μm (β10>5000). Bag filters (with only 90% efficiency) are prohibited, as they cannot provide sufficient protection – leading to premature wear of the pump and increased replacement costs for Water Treatment Consumables. Spiral-wound filter elements are strongly recommended.
- Low-Pressure Protection: Install a low-pressure control switch (set to 1 Bar) at the inlet. If the inlet pressure drops below 1 Bar, the pump shuts down automatically, preventing cavitation that can damage the pump and disrupt downstream Water Treatment Consumables.
- High-Pressure Protection: Install a high-pressure control switch (set to 70 Bar) between the pump’s outlet and the reverse osmosis membrane. This stops the pump in case of overpressure, protecting the membrane – a high-value Water Treatment Consumable.
- Safety Valve: A safety valve (per Chapter 10 of the product manual) is mandatory to absorb instantaneous pressure spikes after pump startup, avoiding damage to the system and Water Treatment Consumables.
Before starting the pump:
- Thoroughly flush pipelines and the system to remove welding slag, debris, or other contaminants that could clog the pump or damage Water Treatment Consumables.
- Use the exhaust valve to discharge air from the pump and system, preventing cavitation.
- Confirm the pump’s rotation direction matches the arrow on the pump body.
- Critical Warning: Never start the pump with the outlet valve closed. This can cause frequent safety valve activation or pipeline bursts, leading to costly repairs for the pump and surrounding Water Treatment Consumables.
The DHP 13.5’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 (Unit: mm):
Proper maintenance ensures the DHP 13.5 – a valuable Water Treatment Consumable – delivers long-term reliability, while Fenigal’s comprehensive warranty services provide peace of mind.
- Daily Maintenance: Monitor noise and vibration in real time. If abnormalities occur (e.g., sudden noise increases or excessive vibration), shut down the pump immediately to inspect for plunger wear, seal aging, or other issues. In high-salt environments (e.g., seawater desalination), flush the pump cavity with fresh water after each shutdown to remove concentrated brine – preventing salt crystallization from damaging plungers and seals (critical components that 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 thoroughly with fresh water. For long-term shutdowns (>15 days), use fresh water with a bactericide to prevent microbial growth that could corrode components.
- Regular Inspection: After 8000 hours of operation, conduct a full disassembly and inspection. Replace worn parts (e.g., seal plates, plunger sleeves, springs) – essential Water Treatment Consumables – to avoid system-wide failures.
Fenigal provides end-to-end support for this Water Treatment Consumable, ensuring customers’ water treatment systems run smoothly throughout the pump’s lifecycle:
- Unmatched Scenario Adaptability: Tailored for industrial reverse osmosis, it handles high-salt fluids and meets the needs of seawater desalination, wastewater zero-liquid discharge, and food/pharmaceutical membrane concentration – all relying on its performance as a core Water Treatment Consumable.
- Superior Reliability: The self-lubrication design and 2205 stainless steel components eliminate oil pollution and resist corrosion, ensuring long-term stability alongside other Water Treatment Consumables.
- Easy Integration & Low Maintenance: Compact dimensions simplify installation, and the self-lubricating design reduces maintenance work – lowering overall water treatment system costs.
- Strong After-Sales Support: Fenigal’s 24-hour fault response and genuine spare parts guarantee minimal downtime, protecting your investment in Water Treatment Consumables.
If your industrial reverse osmosis system needs a high-performance, reliable high-pressure pump – a critical Water Treatment Consumable – the DHP 13.5 Axial Piston Pump is the ideal choice. For more information or to 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 / +86-13646187144
- Email: sales@fgwater.com
