Danfoss piston pumps usually have several check valves as part of their design. Check valves, also known as non-return valves or one-way valves, are important components in hydraulic systems, including plunger pumps. They allow fluid flow in one direction while preventing backflow or reverse flow. Here are a few key points about Danfoss piston pump check valves: 1. Suction check valve: The suction check valve is located at the inlet of the pump and is responsible for controlling the flow of fluid entering the pump during the suction stroke. It opens when the pressure at the inlet is lower than the pressure on the other side, allowing fluid to enter the pump. This valve ensures that the pump maintains a steady flow of fluid during the suction phase. 2. Discharge check valve: The discharge check valve is located at the outlet of the pump and regulates the fluid flow during the discharge stroke. When the pressure on the discharge side exceeds the pressure on the other side, it opens, allowing fluid to exit the pump. The valve prevents backflow and ensures fluid is directed to the desired outlet or system. 3. Pilot Check Valve: Some Danfoss piston pumps may also be fitted with a pilot check valve. These valves are used in conjunction with control mechanisms such as pressure compensators or load sensing devices to regulate the pump output flow and pressure. Pilot-operated check valves act as control elements, allowing or restricting flow depending on system demand and the position of other valves in the hydraulic circuit. 4. Spring-loaded design: The check valves in Danfoss plunger pumps are usually spring-loaded. When pressure conditions are right, the spring provides the necessary force to keep the valve closed. When the pressure differential exceeds a certain threshold, the spring force is overcome and the check valve opens, allowing fluid to flow in the desired direction. 5. Sealing and leak-proof: The check valves in Danfoss plunger pumps are designed to provide an effective seal to prevent leaks and ensure efficient operation. Proper sealing is critical to maintaining the desired direction of flow and preventing pressure loss or hydraulic system inefficiency. 90-R-130-HF-5-CD-80-L-4-F1-H-03-GBA-30-30-24 90R130HF5CD80L4F1H03GBA303024 90R130-HF-5-CD-80-L-4-F1-H-03-GBA-30-30-24 90R130HF5CD80L4F1H03GBA303024 90-R-130-HF-5-CD-80-L-4-F1-H-03-GBA-23-23-24 90R130HF5CD80L4F1H03GBA232324 90R130-HF-5-CD-80-L-4-F1-H-03-GBA-23-23-24 90R130HF5CD80L4F1H03GBA232324 90-R-130-HF-5-CD-80-L-4-C8-F-03-GBA-35-35-24 90R130HF5CD80L4C8F03GBA353524 90R130-HF-5-CD-80-L-4-C8-F-03-GBA-35-35-24 90R130HF5CD80L4C8F03GBA353524 90-R-130-HF-5-CD-80-L-3-C8-H-02-GBA-42-42-24 90R130HF5CD80L3C8H02GBA424224 90R130-HF-5-CD-80-L-3-C8-H-02-GBA-42-42-24 90R130HF5CD80L3C8H02GBA424224 90-R-130-HF-5-BC-80-S-4-F1-H-03-GBA-30-30-24 90R130HF5BC80S4F1H03GBA303024 90R130-HF-5-BC-80-S-4-F1-H-03-GBA-30-30-24 90R130HF5BC80S4F1H03GBA303024 6. High-quality construction: Danfoss is known for its high-quality hydraulic components, and the check valves in its plunger pumps are no exception. Manufactured from durable materials, these valves can withstand the demands of hydraulic systems, including the high pressures and fluid velocities encountered in pump operation. Rugged construction ensures long-term reliability and minimizes the risk of valve failure or leakage. 7. Customizable configuration: Danfoss plunger pumps have flexibility in check valve configuration. Depending on specific application and system requirements, customers have the option of customizing the location, size and characteristics of the check valve. This customization allows for optimum performance and compatibility with hydraulic systems. 8. Maintenance and serviceability: The check valves in Danfoss piston pumps are designed with maintenance and serviceability in mind. They are usually easily accessible and can be easily inspected, cleaned or replaced if necessary. This easy-to-maintain feature helps minimize downtime and ensures smooth operation of the hydraulic system. 9. Compatibility with fluids: Danfoss plunger pumps and their check valves are designed to be compatible with a wide variety of hydraulic fluids, including various types of oils, water-glycol mixtures and synthetic fluids. The materials used in the construction of the check valves are carefully selected to withstand the characteristics and characteristics of different fluids, ensuring reliable and efficient operation in a variety of applications. 10. Application Versatility: The presence of multiple check valves in Danfoss plunger pumps allows for a variety of applications. These pumps are used in a variety of industries and systems that require precise control of fluid flow and direction. Whether in industrial machinery, mobile equipment, or other hydraulic systems, check valves play a vital role in maintaining desired fluid flow characteristics. 11. Pressure relief function: In addition to controlling the direction of fluid flow, some check valves in Danfoss plunger pumps also function as pressure relief valves. These valves are designed to protect pumps and hydraulic systems from excessive pressure. When pressure exceeds a predetermined threshold, the pressure relief check valve opens to allow fluid to bypass the pump or be redirected to the low pressure path, preventing potential damage to the system. 12. Anti-cavitation characteristics: Cavitation is a phenomenon that occurs in a hydraulic system when the pressure drops below the vapor pressure of the fluid, resulting in the formation and collapse of air bubbles. Danfoss piston pumps may contain anti-cavitation check valves to help prevent cavitation by maintaining a minimum pressure level in the pump. Even during the suction stroke, these valves allow a small amount of fluid to flow, ensuring a continuous fluid supply to the pump and minimizing the risk of cavitation. 13. Reduce noise and pressure pulsation: The check valves in Danfoss plunger pumps are designed to minimize noise and pressure pulsation in hydraulic systems. They are designed with features such as special seat arrangements, damping mechanisms or flow control elements to reduce pressure peaks and dampen fluid flow disturbances. This contributes to quieter operation and smoother hydraulic performance, increasing overall system efficiency and reliability. 90-R-130-HF-5-BC-80-S-4-F1-F-03-GBA-35-35-24 90R130HF5BC80S4F1F03GBA353524 90R130-HF-5-BC-80-S-4-F1-F-03-GBA-35-35-24 90R130HF5BC80S4F1F03GBA353524 90-R-130-HF-5-BC-80-S-4-F1-F-03-GBA-17-17-20 90R130HF5BC80S4F1F03GBA171720 90-R-130-HF-5-BC-80-S-3-C8-H-03-GBA-42-42-24 90R130HF5BC80S3C8H03GBA424224 90R130-HF-5-BC-80-S-3-C8-H-03-GBA-42-42-24 90R130HF5BC80S3C8H03GBA424224 90-R-130-HF-5-BC-80-R-4-F1-H-04-GBA-35-35-24 90R130HF5BC80R4F1H04GBA353524 90R130-HF-5-BC-80-R-4-F1-H-04-GBA-35-35-24 90R130HF5BC80R4F1H04GBA353524 90-R-130-HF-5-BC-80-R-4-F1-F-03-GBA-35-35-24 90R130HF5BC80R4F1F03GBA353524 90R130-HF-5-BC-80-R-4-F1-F-03-GBA-35-35-24 90R130HF5BC80R4F1F03GBA353524 90-R-130-HF-5-BC-80-R-3-F1-H-06-GBA-35-35-24 90R130HF5BC80R3F1H06GBA353524 14. Compatibility with control systems: Danfoss plunger pumps and their check valves are generally designed to be compatible with various control systems and valve configurations. They work seamlessly with proportional control valves, servo valves or other control components for precise control of flow and pressure. This compatibility enables Danfoss piston pumps to be integrated into complex hydraulic systems, offering advanced control capabilities. 15. Documentation and technical support: Danfoss provides comprehensive documentation and technical support for its plunger pumps and related check valves. This includes product manuals, installation guides, and troubleshooting resources. Customers can turn to Danfoss' technical support team for help and guidance if they have any questions or problems with check valves. In summary, check valves in Danfoss piston pumps perform multiple functions, including controlling the direction of fluid flow, acting as pressure relief valves, preventing cavitation, reducing noise and pressure pulsations, and ensuring compatibility with control systems. Backed by documentation and technical assistance, check valves in Danfoss piston pumps help to operate hydraulic systems reliably, efficiently and precisely in a wide range of applications.