The valve body K 74134 is a critical structural component of the fuel transfer pump in the ZV40/48 engine, designed to house and support the internal flow-control mechanisms. Built to withstand high-pressure fuel delivery and continuous operational stress, this component ensures precise fluid routing, minimal turbulence, and consistent pump efficiency. Its durable construction and corrosion-resistant materials help maintain long-term stability, reduce maintenance requirements, and safeguard the performance of the entire fuel supply system. As the core of the pump’s regulation function, K 74134 plays a central role in ensuring reliable fuel transfer and uninterrupted engine operation.
The shaft seal K 74149 is a high-performance sealing component designed specifically for the rotating assembly of part K 74123 in the ZV40/48 engine. Engineered to withstand high rotational speeds, thermal changes, and exposure to fuel and lubricants, this seal maintains a reliable barrier that prevents fluid escape and protects internal components from contamination. Its robust elastomeric construction ensures long service life, reduces wear, and supports smooth, efficient operation of the shaft mechanism, making it essential for maintaining the overall integrity of the assembly.
The tapered connection sleeve K 84469 is a precision-engineered coupling element used to secure the visual flow control device within the Sulzer/Adriadiesel/Jugoturbina/Zgoda ZV40/48 engine’s fluid monitoring system. Its conical design ensures a tight, vibration-resistant seal that maintains optimal visibility and prevents leakage even under fluctuating pressures and temperatures. Manufactured for durability and accurate alignment, this sleeve plays a crucial role in ensuring that operators receive clear, uninterrupted visual feedback on fluid movement, thereby improving diagnostic accuracy and enhancing operational safety.
The cooling water pipe connections, code P51630-12, form an integral part of the MAN L21/31 engine’s cooling circuit, ensuring secure and leak-free transport of coolant throughout the engine block and auxiliary systems. Engineered for durability and corrosion resistance, these connections maintain reliable coolant flow, preventing overheating and supporting consistent temperature regulation. Their precise fit and high-quality sealing help safeguard the engine against thermal damage, making them crucial for long-term efficiency and operational stability in both marine and land-based installations.
The lubricating oil cooler, code P51506-22, is a vital heat-exchange component in the MAN L21/31 engine, responsible for maintaining the correct operating temperature of the lubricating oil. By cooling the oil as it circulates through the engine, the cooler prevents overheating, preserves oil viscosity, and ensures stable lubrication across all moving parts. Its robust construction and thermal efficiency are essential for protecting bearings, pistons, and gear systems from thermal stress, making it indispensable for engines operating in demanding marine environments or high-load industrial applications.
The centrifugal bypass filter, code P51515-07, is a highly efficient secondary filtration system used in the MAN L21/31 engine to remove fine contaminants from lubricating oil. Unlike conventional filters, it uses centrifugal force to separate soot, sludge, and microscopic particles from the oil, ensuring cleaner lubrication and extending oil life. By maintaining optimal oil purity, the centrifugal bypass filter significantly reduces wear on critical engine components, enhances long-term durability, and supports reliable performance under the heavy operating demands typical of marine propulsion and continuous-duty power generation.
The expansion piece K 81136 is a flexible exhaust piping component featuring six corrugations, engineered to absorb thermal expansion, vibration, and movement within the ZV40/48 engine’s exhaust system. Its corrugated design allows controlled flexibility while maintaining strength and gas-tight performance under high-temperature exhaust flow. By reducing stress on rigid piping sections and preventing cracking or premature failure, this expansion piece significantly enhances the durability and reliability of the engine’s exhaust line, ensuring stable operation in demanding marine and industrial environments.
The attachment shaft K 81163 is a precision-machined connector used to anchor and support the guide element in the ZV40/48 engine’s structural system. Built for high mechanical strength and resistance to vibration, the shaft ensures stable alignment and smooth interaction between moving and stationary components. Its accurate geometry guarantees proper fit and long-term durability, reducing wear and maintaining the integrity of the guidance system. As a key interface component, K 81163 contributes to consistent operational reliability and extended service life of the engine’s auxiliary assemblies.
The weld-on piece K 81166 is a durable structural component designed to provide a stable mounting surface for the guide element within the Sulzer/Adriadiesel/Jugoturbina/Zgoda ZV40/48 engine. Manufactured to withstand thermal expansion, vibration, and continuous operational loads, this weldable part ensures precise positioning and secure integration into the engine’s support framework. Its robust design enhances the rigidity of the guide assembly, prevents misalignment over long operating periods, and contributes to the engine’s overall mechanical reliability.
The pressure regulating valve, code P51507-03, maintains optimal oil pressure within the MAN L21/31 engine’s lubrication circuit, protecting critical parts from both insufficient lubrication and excessive pressure. By automatically adjusting flow based on engine demand, this valve ensures stable operating conditions and contributes to consistent temperature control. Its precision and reliability make it indispensable for safeguarding engine health, especially during load fluctuations and extended operation in demanding environments.