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Ovell Pump News
March 27, 2025

Exploring the Role of Diaphragm Pumps in Marine Vessels – Insights from SEA ASIA 2025

1. Industry Background: Marine Sector’s Evolving Pumping Needs

The diaphragm pump is emerging as a critical solution in the marine industry, which operates under some of the harshest conditions known to man. Ships and offshore platforms are tasked with handling a variety of fluids—bilge water, fuel oils, chemicals, sewage, and sludge—each presenting its own challenges. The environment is relentlessly aggressive: saltwater corrosion, confined spaces, flammable vapors, and fluctuating pressures are all part of the daily operational landscape.

The need for safe, reliable, and low-maintenance pumping solutions is paramount. Traditional electric pumps, while effective in certain controlled applications, often fall short when used in marine contexts. Problems such as inability to run dry, susceptibility to corrosion, and complex maintenance procedures make them less than ideal for vessels that require rugged, all-weather reliability.

At SEA ASIA 2025, OVELL engaged with various stakeholders—shipbuilders, engineers, maintenance managers, and procurement specialists—who shared real-world challenges that current pumping systems fail to meet. A recurring theme was the demand for a diaphragm pump that is versatile, corrosion-resistant, and maintenance-friendly—capable of performing across a wide range of marine applications.

Ovell's Diaphragm Pump in SEA ASIA 2025

2. Common Challenges Faced by Marine Operators

Dry-Run Damage in Electric Pumps

One of the most significant issues shared by marine engineers is that many electric centrifugal pumps cannot operate without liquid in the system. If a pump runs dry, even for a few seconds, it can cause critical damage to seals and bearings. In unpredictable marine conditions, this presents a serious safety and operational risk.

High Maintenance and Downtime

Seawater and chemically aggressive fluids often wear down pump components quickly. For ships operating in remote areas or for long durations, frequent maintenance becomes impractical and expensive. Replacing seals, impellers, and motors not only increases costs but also affects voyage schedules.

Limited Installation Space

Marine vessels are notorious for having compact engine rooms and narrow compartments. Conventional pump systems with large footprints or complex piping arrangements are difficult to install and maintain onboard.

Handling Mixed and Hazardous Liquids

Ships often deal with sludge, emulsified liquids, and mixtures containing solids. Many standard pumps are unable to cope with such compositions, leading to frequent clogging or inefficient transfer. Handling flammable or chemically aggressive substances adds another layer of complexity that many traditional systems are ill-equipped to manage.

Ovell's staff is introducing the diaphragm pump to the visitor

3. OVELL’s Tailored Solution: Air-Operated Diaphragm Pumps (AODD)

OVELL has developed a range of Air-Operated Double Diaphragm (AODD) pumps that address the above challenges head-on. These pumps were prominently showcased at SEA ASIA 2025, sparking deep interest among marine professionals.

Recommended Configuration: Stainless Steel A30SA with PTFE Diaphragm

One of the flagship models presented was the OVELL A30SA, constructed from marine-grade stainless steel and equipped with a PTFE diaphragm. This configuration offers several marine-specific advantages:

  • Excellent chemical resistance (ideal for transferring aggressive cleaning agents, bilge water with fuel residues, and greywater).
  • Dry-run capable, protecting internal components even if suction lines are intermittently empty.
  • Compact and modular design, allowing easy installation in engine rooms or confined compartments.
  • Self-priming functionality, eliminating the need for additional priming equipment.
  • Ability to handle viscous fluids, slurries, and suspended solids, critical for sludge and sewage pumping tasks.

Stainless Steel A30SA with PTFE Diaphragm
76 mm (3″) Stainless Steel Air Operated Diaphragm Pump

Solving Specific Marine Use Cases

OVELL’s diaphragm pumps were designed with versatility in mind. Here’s how they addressed specific issues shared by SEA ASIA attendees:

  • Bilge Water Transfer: Self-priming AODD pumps easily evacuate water from the lowest compartments, even when mixed with oil or debris.
  • Chemical Handling: The PTFE diaphragms withstand aggressive cleaning chemicals, offering safe and leak-free dosing for sanitization systems.
  • Fuel and Lubricant Transfer: Precise, pulseless flow allows for efficient handling of diesel and engine oils without the risk of leaks or ignition.
  • Dry-Dock Maintenance: Portable, air-driven pumps do not rely on vessel power supply, making them perfect for maintenance crews during dry-docking.

4. Real-World Performance and Customer Feedback

During SEA ASIA 2025, OVELL received encouraging feedback from existing clients and new visitors who had implemented their AODD systems. A particularly compelling case came from a coastal cargo vessel operator in Southeast Asia, who had replaced three of their electric centrifugal pumps with OVELL diaphragm units for bilge and chemical transfer operations.

Observed Benefits After 90 Days of Operation
Performance Improvement: Electric Pump vs OVELL AODD Pump
Performance Metric Before
(Electric Pump)
After
(OVELL AODD Pump)
Dry Run Damage 2 occurrences 0 occurrences
Downtime (monthly avg) 12 hours <2 hours
Maintenance Cost High (seal and motor issues) Minimal (routine checks)
Fluid Compatibility Limited Wide chemical compatibility
Noise/Vibration High Low and stable

Client Testimonial
We were constantly battling pump failures due to dry running and chemical corrosion. Since switching to OVELL’s diaphragm pumps, our maintenance team finally has peace of mind. These pumps just work—no leaks, no hassle.

5. Summary and Future Outlook

The marine industry demands equipment that is tough, reliable, and built for the unexpected. From tankers to tugboats, and offshore platforms to ferries, fluid handling systems must endure saltwater exposure, fluid variability, and tight spatial constraints—challenges that traditional pump systems often fail to meet.

OVELL’s air-operated diaphragm pumps are purpose-built to fill this gap. Their unique combination of dry-run protection, chemical resistance, and maintenance simplicity makes them a logical choice for modern marine vessels looking to reduce downtime and increase safety.

Looking Ahead

OVELL is committed to continued innovation in the marine sector. In the coming months, the company plans to introduce smart monitoring features such as flow sensors, remote pressure gauges, and predictive maintenance alerts compatible with vessel management systems.

Ready to Upgrade Your Marine Pumps?

Whether you're a shipowner, fleet manager, or marine engineer, OVELL invites you to explore tailored pump solutions that meet the unique needs of your vessel. Our team of technical experts is on standby to help you:

  • Select the right model based on fluid type and flow rate
  • Recommend material configurations for corrosive or flammable liquids
  • Customize solutions for installation constraints or operational requirements

📩 Contact OVELL today for a custom diaphragm pump solution built for the sea.

(FAQs) About Diaphragm Pump in Marine Use

1. What makes a diaphragm pump suitable for marine vessels?

A diaphragm pump is ideal for marine vessels due to its ability to self-prime, handle corrosive and viscous fluids, and run dry without damage. Its air-operated mechanism makes it reliable in spaces with limited electrical infrastructure.

2. Can a diaphragm pump handle seawater and chemicals?

Yes, especially when equipped with PTFE or stainless-steel components, diaphragm pumps are resistant to corrosive seawater and a wide range of chemicals commonly used on ships.

3. How does a diaphragm pump compare to a centrifugal pump in marine applications?

Unlike centrifugal pumps, diaphragm pumps can handle dry-running conditions, slurries, and high-viscosity fluids. They also require less maintenance and can operate without a continuous electrical supply.

4. Is it easy to maintain a diaphragm pump onboard a vessel?

Absolutely. Diaphragm pumps have few moving parts and no dynamic seals, making them easy to maintain, repair, or rebuild with basic tools—ideal for marine crews.

5. Are diaphragm pumps safe for flammable or explosive environments?

Yes. Air-operated diaphragm pumps don’t use electric motors, reducing the risk of ignition in explosive atmospheres—making them safe for fuel transfer and chemical handling on ships.

6. Where can I buy a marine-grade diaphragm pump?

You can purchase diaphragm pumps from specialized industrial pump suppliers like OVELL. Visit OVELL's website for high-quality marine-grade options.