The complete raw water pump casing K 73102 forms the structural and hydraulic core of the cooling water pump assembly in the ZV40/48 engine. Designed to house and precisely align the impeller, shaft, and sealing components, this casing ensures efficient water flow with minimal losses and high operational stability. Built to withstand corrosion, pressure fluctuations, and continuous operation, its robust construction protects internal components and maintains long-term dimensional integrity. As a fully assembled unit, K 73102 plays a key role in ensuring dependable raw water circulation and effective engine cooling.
The impeller K 73106 is a critical rotating component of the raw water pump in the Sulzer/Adriadiesel/Jugoturbina/Zgoda ZV40/48 engine, responsible for generating the flow needed to circulate cooling seawater through the engine’s heat exchange system. Precision-machined for optimal hydraulic efficiency, the impeller ensures consistent water delivery even under varying engine loads. Manufactured from corrosion-resistant materials to withstand continuous exposure to seawater and mechanical stress, K 73106 supports stable engine temperatures, prevents overheating, and contributes directly to the reliability and longevity of the cooling system in demanding marine and industrial environments.
The expansion joint, code P51913-01, plays a critical role in compensating for thermal expansion and mechanical movement within the MAN L21/31 engine’s piping or exhaust systems. Designed to absorb axial, lateral, and angular displacement, it protects connected components from stress, fatigue, and cracking caused by temperature changes and vibration. Its robust and flexible design ensures long-term durability, reduces structural loads on adjoining equipment, and supports safe, efficient engine operation under continuous high-load marine and industrial conditions.
The flexible hose, code P51912-01, is an essential connection component in the MAN L21/31 engine, designed to safely transport fluids or air while accommodating movement, vibration, and thermal expansion. Its reinforced construction allows it to withstand pressure fluctuations, temperature extremes, and aggressive operating conditions without compromising integrity. By absorbing mechanical stresses and preventing rigid pipe failures, this flexible hose enhances system reliability, simplifies installation, and reduces maintenance requirements in marine propulsion and power generation applications.
The conical element, code P51903-02, is a precision-engineered component used in the MAN L21/31 engine for controlled flow guidance, sealing, or mechanical alignment, depending on its application within the system. Its tapered geometry ensures accurate centering and secure seating between mating parts, helping to distribute loads evenly and prevent leakage or misalignment. Manufactured from high-quality materials to withstand pressure, temperature variations, and vibration, the conical element contributes to system stability, reliable operation, and long service life in demanding marine and industrial environments.
The left-hand exhaust bend K 81132 is a robust piping component forming part of the exhaust system of the ZV40/48 engine, designed to guide exhaust gases smoothly through directional changes in the exhaust line. Built to withstand high exhaust temperatures, vibration, and corrosive gas compounds, this bend ensures efficient gas flow with minimal pressure loss. Its precise geometry supports correct alignment within the exhaust assembly, reduces mechanical stress on connected sections, and contributes to the durability and safe operation of the complete exhaust piping system in heavy-duty marine and power-generation environments.