When it comes to reliable, high-performance marine filters, BOLL (from BOLL & KIRCH Filterbau GmbH) stands out as a global leader trusted by top shipyards and marine engine manufacturers worldwide. For decades, BOLL’s marine filters have been a core component in protecting critical marine systems—from main engines to lubrication circuits—earning a reputation for durability, efficiency, and adaptability to harsh maritime conditions. Below, we break down BOLL’s key marine filter types and their unrivaled advantages, then introduce how our company delivers equivalent quality to global shipyards.
(1)Marine Filters & Their Target Applications
Marine filters tailored to the unique needs of maritime systems, covering all critical filtration scenarios on board. The most widely used types include:
-
Candle Element
- Application: Used in simplex and duplex filters, suitable for filtering liquids with low solid content (e.g., water treatment).
- Advantages: Large filtration area, long service life; fewer components required compared to jacketed screens; easier cleaning; replaceable individually; high differential pressure resistance; reusable after multiple cleanings, cost-effective and durable.
- Structure: Composed of multiple mesh candles of the same size, placed in parallel or screwed together to form a large filtration area; filter medium is stainless steel mesh, with optional magnetic inserts.
-
Star-Pleated Element
- Application: Typically used in scenarios requiring high-efficiency filtration and large filtration area (e.g., hydraulic systems, lubricating oil filtration).
- Advantages: Large filtration area for improved efficiency; low pressure drop; pleated structure enables maximum filtration area in limited space; reusable, reducing operating costs.
- Structure: Star-shaped pleated design; made of stainless steel mesh or other suitable filter materials; secured via specialized pleating and fixing processes to ensure structural stability and consistent filtration performance.
-
Basket Element
- Application: Mainly used to filter foreign particles from horizontal pipelines, preventing particles from entering downstream equipment (e.g., pumps, valves) and protecting industrial process equipment from particle contamination.
- Advantages: Simple structure; easy installation and disassembly; convenient cleaning and replacement; effective interception of large-sized particles; high strength and stability.
- Structure: Generally composed of stainless steel mesh (for filtration) and rigid perforated plates (for support); top can be flat or sloped; available in single-layer or double-layer designs.
| filter element type | Core advantage | Filtration accuracy | Applicable system pressure | Typical ship adaptation equipment |
|---|---|---|---|---|
| canlde filter element | High pressure resistant and replaceable as a single piece | 10-150μm | ≤1MPa | Main engine lubricating oil and high-pressure fuel system |
| star-pleated filter element | Low resistance, high throughput, and stable precision | 5-100μm | ≤0.8MPa | Central cooling, diesel generator fuel system |
| basket filter element | High pollution capacity and impact resistance | 25-200μm | ≤1.5MPa | Pre-filtration of bilge water and hydraulic equipment |
(2)Product features
1、Exceptional Corrosion Resistance: Most marine filters use 304/316L stainless steel or anti-corrosion-coated materials, resisting salt spray, seawater splashes, and acidic/alkaline residues in fuel/oil. This is critical for long-term use in marine environments (where humidity and salt levels are extremely high).
2、High Durability & Long Service Life: filters feature robust housings and wear-resistant media—unlike disposable paper filters, many models (e.g., stainless steel wire mesh filters) can be cleaned via backwashing or solvent flushing, with a service life of 1-3 years (5-10x longer than disposable alternatives).
3、Precise Filtration & Low Pressure Drop: advanced media design (e.g., uniform wire gap spacing, pleated structures) ensures stable filtration precision (no drift due to pressure/temperature changes) while minimizing pressure loss (≤0.1MPa). This avoids reducing system flow rates or increasing energy consumption.
We provide alternative filter elements for BOLL all year round and can also customize design and production according to customers’ requirements.
| 1940080 | 1940270 | 1940276 | 1940415 | 1940418 | 1940420 |
| 1940422 | 1940426 | 1940574 | 1940727 | 1940971 | 1940990 |
| 1947934 | 1944785 | 1938645 | 1938646 | 1938649 | 1945165 |
| 1945279 | 1945523 | 1945651 | 1945796 | 1945819 | 1945820 |
| 1945821 | 1945822 | 1945859 | 1942175 | 1942176 | 1942344 |
| 1942443 | 1942562 | 1941355 | 1941356 | 1941745 | 1946344 |
Our Strengths for Global Shipyards:
- Proven International Supply Track Record: We have long-term partnerships with shipyards in South Korea (e.g., Hyundai Heavy Industries), Germany (e.g., Meyer Werft), Singapore (e.g., Keppel Offshore & Marine), and Chile (e.g., ASMAR Shipyard), supplying filters for bulk carriers, container ships, cruise ships, and offshore support vessels.
- Custom Design Capabilities: Like BOLL, we tailor filters to your specific needs—whether you require a certain filtration precision (5-50μm), material (316L stainless steel for seawater systems), flow rate, or certification. Our engineering team works closely with you to optimize filter performance for your vessel’s systems.
- Same-Grade Quality & Reliability: Our filters use imported 304/316L stainless steel media, undergo strict pressure testing (up to 3MPa) and corrosion resistance testing.
- Timely Delivery & After-Sales Support: We understand the urgency of shipbuilding schedules—our global warehouse network ensures fast delivery to shipyards worldwide. Additionally, we provide technical guidance for filter installation, cleaning, and maintenance, helping you reduce downtime.
Post time: Sep-24-2025