In some hydraulic systems, a plunger pump is used to supplement the oil on the low-pressure side of the working circuit into the closed system through the check valve. This process is often referred to as priming or topping up the oil supply. Generally it works like this: 1. Low-pressure side of the working circuit: The working circuit of the hydraulic system is composed of actuators, valves, cylinders and other components. The low pressure side of a loop is the part of the system where the pressure is relatively low, such as the return side or the receiver side. 2. Piston pump: The plunger pump is often driven by a motor or other power source and connected to the low-pressure side of the working circuit. Piston pumps are designed to provide additional oil to closed systems when needed. 3. One-way valve: One-way valve, also known as check valve or check valve, is placed between the plunger pump and the closed system. Check valves ensure that oil flows in one direction only, allowing oil to be fed from the plunger pump into a closed system while preventing backflow. 4. Supplementary oil: When the pressure in the closed system drops or oil needs to be supplemented, the plunger pump starts. It draws oil from the low-pressure side of the working circuit (usually from the tank) and sends it through a check valve into a closed system. This helps maintain the desired oil level and pressure within the closed system. ER-L-100B-LB-17-28-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLB1728NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LB-19-20-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLB1920NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LB-19-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLB1920NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LB-20-20-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL100BLB2020NNN3S1CPA1NNNNNNNNNNNN ER-L-100B-LB-21-14-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLB2114NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LB-21-20-NN-N-3-S2AP-A1N-AAA-NNN-NNN ERL100BLB2120NNN3S2APA1NAAANNNNNN ER-L-100B-LB-21-20-NN-N-3-S2NL-A1N-AAA-NNN-NNN ERL100BLB2120NNN3S2NLA1NAAANNNNNN ER-L-100B-LB-23-20-NN-N-3-K5NP-A1N-AAA-NNN-NNN ERL100BLB2320NNN3K5NPA1NAAANNNNNN ER-L-100B-LB-25-12-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLB2512NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LB-25-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLB2520NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LB-25-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLB2520NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LB-25-30-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLB2530NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LB-26-20-NN-N-3-S2BP-A1N-NNN-NNN-NNN ERL100BLB2620NNN3S2BPA1NNNNNNNNNNNN ER-L-100B-LB-28-17-NN-F-3-S2BP-A1N-AAA-NNN-NNN ERL100BLB2817NNF3S2BPA1NAAANNNNNN ER-L-100B-LB-28-24-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERL100BLB2824NNN3S1BPA1NAAANNNNNN ER-L-100B-LS-10-20-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL100BLS1020NNN3S1NLA1NNNNNNNNNNNN ER-L-100B-LS-10-20-NN-N-3-S1RP-A1N-NNN-NNN-NNN ERL100BLS1020NNN3S1RPA1NNNNNNNNNNNN ER-L-100B-LS-10-26-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERL100BLS1026NNN3S1BPA1NAAANNNNNN ER-L-100B-LS-10-30-NN-N-3-S1VP-A1N-NNN-NNN-NNN ERL100BLS1030NNN3S1VPA1NNNNNNNNNNNN ER-L-100B-LS-10-30-NN-N-3-S1VP-A1R-NNN-ANS-NNN ERL100BLS1030NNN3S1VPA1RNNNANNSNNN ER-L-100B-LS-12-20-NN-N-3-K5NP-A1N-AAA-NNN-NNN ERL100BLS1220NNN3K5NPA1NAAANNNNNN 5. Closed system operation: The closed system includes main hydraulic components such as oil cylinders, motors, valves, etc., and relies on continuous supply of oil to operate effectively. Oil is replenished from the low pressure side by a plunger pump, and the closed system maintains the fluid volume and pressure required for smooth operation. 6. Oil level and pressure control: The function of the plunger pump is to maintain the required oil level and pressure in the closed system. By replenishing oil from the low pressure side, it helps to compensate for oil loss due to leaks, system expansion or external factors. This ensures the system remains properly filled and pressurized for efficient operation. 7. System efficiency and performance: The ability of the plunger pump to supply oil from the low pressure side helps to improve the overall efficiency and performance of the hydraulic system. By maintaining required oil levels and pressures, it ensures consistent operation of hydraulic components, reduces the risk of cavitation or performance degradation, and supports smooth, precise motion control. 8. Oil tank management: The plunger pump replenishes oil from the low-pressure side, usually drawn from the system oil tank. This requires proper reservoir management, including adequate sizing, fluid level monitoring and proper fluid quality control. It is important to ensure that the oil tank has sufficient capacity and is properly vented to accommodate the make-up oil supply. 9. Control and monitoring: The operation of the plunger pump, including the time and amount of oil supply on the low pressure side, can be controlled and monitored through the control system. The control system may use sensors, feedback mechanisms, or operator input to regulate pump operation according to system requirements and conditions. ER-L-100B-LS-12-20-NN-N-3-S1AP-A1N-NNN-NNN-NNN ERL100BLS1220NNN3S1APA1NNNNNNNNNNNN ER-L-100B-LS-14-10-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLS1410NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LS-14-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLS1420NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LS-14-20-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL100BLS1420NNN3S1CPA1NNNNNNNNNNNN ER-L-100B-LS-14-20-NN-N-3-S4VP-A1N-NNN-NNN-NNN ERL100BLS1420NNN3S4VPA1NNNNNNNNNNNN ER-L-100B-LS-14-24-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLS1424NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LS-15-20-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL100BLS1520NNN3S1NLA1NNNNNNNNNNNN ER-L-100B-LS-15-20-NN-N-3-S2CP-A1N-AAA-NNN-NNN ERL100BLS1520NNN3S2CPA1NAAANNNNNN ER-L-100B-LS-15-20-NN-N-3-S4NL-A1N-NNN-NNN-NNN ERL100BLS1520NNN3S4NLA1NNNNNNNNNNNN ER-L-100B-LS-16-15-NN-N-3-S1CP-A1N-AAA-NNN-NNN ERL100BLS1615NNN3S1CPA1NAAANNNNNN ER-L-100B-LS-16-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLS1620NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LS-16-20-NN-N-3-S4CP-A1N-NNN-NNN-NNN ERL100BLS1620NNN3S4CPA1NNNNNNNNNNNN ER-L-100B-LS-17-20-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL100BLS1720NNN3S1CPA1NNNNNNNNNNNN ER-L-100B-LS-17-20-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL100BLS1720NNN3S1NLA1NNNNNNNNNNNN ER-L-100B-LS-17-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLS1720NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LS-17-28-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLS1728NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LS-17-28-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLS1728NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LS-17-30-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLS1730NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LS-17-30-NN-N-3-S1AP-A1N-AAA-NNN-NNN ERL100BLS1730NNN3S1APA1NAAANNNNNN ER-L-100B-LS-17-34-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLS1734NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LS-18-17-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLS1817NNN3S1BPA1NNNNNNNNNNNN 10. Safety considerations: When using a plunger pump to replenish oil to a closed system, safety factors must be considered. Adequate pressure relief and control mechanisms shall be provided to prevent system overpressurization. Proper maintenance and monitoring of piston pumps, check valves and the entire hydraulic system helps ensure safe and reliable operation. 11. Application Specific Notes: The need to replenish oil from the low pressure side via the plunger pump may vary depending on the specific application. Some hydraulic systems may have high oil loss rates or unique operating requirements that require the use of piston pumps for continuous oil supply. 12. Flexible system configuration: The plunger pump is used to replenish oil from the low-pressure side, and the system configuration is flexible. Since the plunger pump compensates for oil loss, it is possible to design a closed system with a smaller oil tank. This is beneficial for space-constrained applications or when weight reduction is required. 13. Leak Compensation: The hydraulic system may experience internal or external leaks, resulting in a gradual loss of oil. Piston pumps help compensate for this leakage by supplying additional oil from the low pressure side. This ensures that the closed system maintains the required amount of oil and prevents performance degradation due to oil loss. 14. Remote or mobile applications: In remote or mobile hydraulic systems, where access to a centralized oil tank can be challenging, a plunger pump can be used to replenish oil from an external source. This allows for greater flexibility in system layout and operation, as the pump can draw oil from a separate container or supply line. ER-L-100B-LS-18-20-NN-N-3-K5NL-A1N-NNN-NNN-NNN ERL100BLS1820NNN3K5NLA1NNNNNNNNNN ER-L-100B-LS-18-20-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLS1820NNN3K5NPA1NNNNNNNNNN ER-L-100B-LS-18-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLS1820NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LS-18-20-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL100BLS1820NNN3S1CPA1NNNNNNNNNNNN ER-L-100B-LS-18-20-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL100BLS1820NNN3S1NLA1NNNNNNNNNN ER-L-100B-LS-18-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLS1820NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LS-18-20-NN-N-3-S2BP-A1N-AAA-NNN-NNN ERL100BLS1820NNN3S2BPA1NAAANNNNNN ER-L-100B-LS-18-25-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL100BLS1825NNN3S1CPA1NNNNNNNNNNNN ER-L-100B-LS-18-26-NN-N-3-S1BP-A1N-AAA-NNN-NNN ERL100BLS1826NNN3S1BPA1NAAANNNNNN ER-L-100B-LS-19-20-NN-N-3-K5CP-A1N-NNN-NNN-NNN ERL100BLS1920NNN3K5CPA1NNNNNNNNNN ER-L-100B-LS-19-20-NN-N-3-S1AP-A1N-AAA-NNN-NNN ERL100BLS1920NNN3S1APA1NAAANNNNNN ER-L-100B-LS-19-20-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLS1920NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LS-19-20-NN-N-3-S4AP-A1N-AAA-NNN-NNN ERL100BLS1920NNN3S4APA1NAAANNNNNN ER-L-100B-LS-19-32-NN-N-3-S1NP-A1N-NNN-NNN-NNN ERL100BLS1932NNN3S1NPA1NNNNNNNNNNNN ER-L-100B-LS-20-16-NN-N-3-S1NL-A1N-NNN-NNN-NNN ERL100BLS2016NNN3S1NLA1NNNNNNNNNNNN ER-L-100B-LS-20-16-NN-N-3-S1TP-A1N-NNN-NNN-NNN ERL100BLS2016NNN3S1TPA1NNNNNNNNNNNN ER-L-100B-LS-20-20-NN-N-3-K5NP-A1N-AAA-NNN-NNN ERL100BLS2020NNN3K5NPA1NAAANNNNNN ER-L-100B-LS-20-20-NN-N-3-K5NP-A1N-NNN-NNN-NNN ERL100BLS2020NNN3K5NPA1NNNNNNNNNNNN ER-L-100B-LS-20-20-NN-N-3-S1AP-A1N-NNN-NNN-NNN ERL100BLS2020NNN3S1APA1NNNNNNNNNNNN ER-L-100B-LS-20-20-NN-N-3-S1BP-A1N-NNN-NNN-NNN ERL100BLS2020NNN3S1BPA1NNNNNNNNNNNN ER-L-100B-LS-20-20-NN-N-3-S1CP-A1N-NNN-NNN-NNN ERL100BLS2020NNN3S1CPA1NNNNNNNNNNNN 15. The versatility of oil supply: the plunger pump can replenish oil from the low pressure side, so the versatility of oil supply. It can use different types or grades of oil for specific applications or operating conditions. For example, plunger pumps can be used to introduce specialty oils or additives into closed systems as needed. 16. Maintenance and troubleshooting: The operation and performance of the plunger pump should be monitored and maintained regularly. This includes checking for any signs of abnormal wear, leaks, or reduced oil supply capacity. Additionally, the plunger pump system should be troubleshooted if any issues arise, such as insufficient oil supply or insufficient system performance. 17. System efficiency optimization: The oil replenishment effect of the plunger pump provides an opportunity to optimize the system efficiency. By ensuring a constant supply of oil, hydraulic systems can operate at their peak performance, minimizing energy loss, reducing wear and maximizing overall efficiency. When using a piston pump for replenishment, it is important to consider the specific requirements, operating conditions and intended application of the hydraulic system. Following manufacturer guidelines, maintaining a regular maintenance schedule, and consulting with a hydraulics expert can help ensure effective implementation and operation of your piston pump system.