The specific valves required for Danfoss Series 90 piston pumps may vary depending on the specific application and system requirements. However, here are some common valves that are often used with Danfoss Series 90 piston pumps: Pressure Relief Valves: Pressure relief valves are commonly used to protect hydraulic systems from overpressure. When the system reaches a predetermined set point, it releases excess pressure in the system, keeping the system operating within safe limits. Directional Control Valves: Directional control valves are used to control the flow direction of hydraulic oil. It allows the operator to direct fluid to different hydraulic actuators or circuits for various machine functions. Flow Control Valve: A flow control valve regulates the flow of hydraulic oil in a specific section of a hydraulic system. It can be used to control the speed of hydraulic actuators or adjust the flow of specific components. Check Valve: A check valve allows fluid flow in one direction while preventing flow in the reverse direction. It is typically used to maintain system pressure, prevent cylinder drift, or isolate components. Sequence Valve: A sequence valve controls the sequential operation of a hydraulic actuator or circuit. It ensures that certain actions or functions occur in a specific order, usually based on pressure or flow requirements. Proportional Control Valve: In some applications, proportional control valves are used to provide precise control of the flow or pressure of hydraulic fluid. These valves allow proportional adjustment of valve opening, allowing precise control of system parameters. Load Sensing Valve: Load sensing valves are often used in conjunction with Series 90 piston pumps to optimize the energy efficiency of the system. It senses load pressure and adjusts pump displacement or flow accordingly, providing precise control and reducing energy consumption. 90L100-KA-5-NN-80-R-4-T2-F-04-GBA-26-26-20 90L100KA5NN80R4T2F04GBA262620 90-L-100-KA-5-NN-80-R-4-T2-F-04-GBA-26-26-20 90L100KA5NN80R4T2F04GBA262620 90L100-KA-5-NN-80-S-3-C7-E-03-GBA-26-26-24 90L100KA5NN80S3C7E03GBA262624 90-L-100-KA-5-NN-80-S-3-C7-E-03-GBA-26-26-24 90L100KA5NN80S3C7E03GBA262624 90L100-KA-5-NN-80-S-3-C7-E-03-GBA-35-35-24 90L100KA5NN80S3C7E03GBA353524 90-L-100-KA-5-NN-80-S-3-C7-E-03-GBA-35-35-24 90L100KA5NN80S3C7E03GBA353524 90L100-KA-5-NN-80-S-3-C7-E-03-GBA-42-42-24 90L100KA5NN80S3C7E03GBA424224 90-L-100-KA-5-NN-80-S-3-C7-E-03-GBA-42-42-24 90L100KA5NN80S3C7E03GBA424224 90L100-KA-5-NN-80-S-3-C7-E-03-GBA-45-45-24 90L100KA5NN80S3C7E03GBA454524 90-L-100-KA-5-NN-80-S-3-C7-E-03-GBA-45-45-24 90L100KA5NN80S3C7E03GBA454524 Counterbalance Valve: Counterbalance valves are used to control the movement of hydraulic actuators, especially when handling heavy loads or vertical movement. It prevents runaway or loss of control of the actuator by providing back pressure that balances the load. Pressure Relief Valve: A pressure relief valve is used to regulate the hydraulic oil pressure in a specific part of the system. It ensures that the pressure applied to a particular component or circuit remains within the desired range, preventing damage or excessive force. Pilot Operated Check Valve: A pilot operated check valve allows free flow in one direction while providing additional control over flow in the reverse direction. It is typically used in applications where reliable blocking of backflow is required. Solenoid control valve: Solenoid control valve is an electromechanical valve controlled by an electric signal. They are used to precisely control hydraulic flow or pressure and can be used for various functions such as directional control, flow control or pressure control. Eccentric Valves: Eccentric valves are used in applications where hydraulic cylinders are subjected to high loads and need to reliably maintain position. It prevents the cylinder from drifting by locking it in place when the load exceeds a certain threshold. Pressure Sequence Valves: Pressure sequence valves are used to control the sequential operation of hydraulic actuators based on pressure. It ensures that certain hydraulic functions or operations occur in a specific sequence and at the required pressure levels. Shuttle Valve: Shuttle valves are used to flow fluid from one source to another according to priority or demand. It allows flow to be diverted to a secondary circuit when the primary circuit is inactive or unable to provide sufficient flow. Proportional Pressure Control Valves: Proportional pressure control valves provide precise control of the pressure within a hydraulic system. It can adjust the pressure in real time according to the input signal, realizing the precise control and adjustment of the pressure level. Pressure Compensated Flow Control Valve: A pressure compensated flow control valve is used to maintain a constant flow in a hydraulic system regardless of changes in pressure. It ensures that the required flow is maintained under varying load conditions. 90L100-KA-5-NN-80-S-3-C7-F-03-GBA-30-30-24 90L100KA5NN80S3C7F03GBA303024 90-L-100-KA-5-NN-80-S-3-C7-F-03-GBA-30-30-24 90L100KA5NN80S3C7F03GBA303024 90L100-KA-5-NN-80-S-3-C7-F-03-GBA-45-45-24 90L100KA5NN80S3C7F03GBA454524 90-L-100-KA-5-NN-80-S-3-C7-F-03-GBA-45-45-24 90L100KA5NN80S3C7F03GBA454524 90L100-KA-5-NN-80-S-3-F1-E-03-GBA-35-35-22 90L100KA5NN80S3F1E03GBA353522 90-L-100-KA-5-NN-80-S-3-F1-E-03-GBA-35-35-22 90L100KA5NN80S3F1E03GBA353522 90L100-KA-5-NN-80-S-3-S1-E-03-GBA-26-26-24 90L100KA5NN80S3S1E03GBA262624 90-L-100-KA-5-NN-80-S-3-S1-E-03-GBA-26-26-24 90L100KA5NN80S3S1E03GBA262624 90-L-100-KA-5-NN-80-S-3-S1-F-03-GBA-38-38-24 90L100KA5NN80S3S1F03GBA383824 90L100-KA-5-NN-80-S-3-S1-F-03-GBA-42-42-24 90L100KA5NN80S3S1F03GBA424224 Throttle Valve: A throttle valve is used to regulate the flow of hydraulic oil by restricting or regulating the flow passage. It is commonly used to control the speed of hydraulic actuators or to regulate the flow of specific components. Unloading Valve: When the system reaches a certain pressure, the unloading valve is used to divert excess flow from the pump back to the tank. It prevents pump overload and maintains system stability. It is important to note that the specific valve required for a Danfoss Series 90 piston pump depends on the application, system requirements and desired functionality. Valve selection and configuration should be based on system design and operating parameters. It is recommended to consult the technical documentation provided by Danfoss for the 90 series piston pumps and to seek the advice of a hydraulic system specialist or Danfoss technical support for the precise selection and integration of valves in your specific hydraulic system.