天榆液压气动Y-25B中底压溢流阀/Y25B
中文介绍
天榆液压气动 Y-25B 中底压溢流阀是一款专为中低压液压系统设计的压力控制装置，适用于工作压力范围为 0.5-6.3MPa 的工业场景。该产品采用直动式结构设计，通过优化阀芯几何形状和弹簧匹配系统，实现了压力调节精度与响应速度的平衡，可有效保障液压系统的稳定运行。
其主体采用高强度球墨铸铁材质，关键密封件配置进口丁腈橡胶材料，在保持结构紧凑（外形尺寸控制在 Φ52×120mm 以内）的同时，兼具耐磨损和抗冲击特性。阀体内部流道经过 CFD 流体仿真优化，有效降低压力损失，实测稳态压力波动值不超过设定压力的 ±3%。调节机构采用带刻度盘的手轮设计，支持 0.2MPa 级差的无级调压，便于操作人员根据工况需求进行精准调整。
Y-25B 中底压溢流阀特别适用于工程机械行走系统、农业设备液压回路、小型冲压机床等场景，可发挥系统过载保护、压力维持和压力分级控制等多重功能。安装接口符合 GB/T2877 标准，支持板式或管式两种连接方式，适配国内主流液压设备接口规格。使用过程中建议定期检查阀体密封状态，并保持液压油清洁度不低于 NAS 9 级。
English Introduction
The Tianyu Y-25B Medium-Low Pressure Relief Valve is a pressure control device specifically designed for medium-low pressure hydraulic systems, suitable for industrial applications with a working pressure range of 0.5-6.3MPa. This product features a direct-acting structure, with optimized spool geometry and spring matching system to achieve a balance between pressure regulation accuracy and response speed, ensuring stable operation of the hydraulic system.
The main body of the valve is made of high-strength ductile iron, and the critical sealing components are equipped with imported nitrile rubber materials. While maintaining a compact structure (with dimensions controlled within Φ52×120mm), it also has wear resistance and impact resistance characteristics. The internal flow channel of the valve body has been optimized through CFD fluid simulation, effectively reducing pressure loss, with the measured steady-state pressure fluctuation value not exceeding ±3% of the set pressure. The adjustment mechanism features a handwheel with a graduated scale, supporting stepless pressure adjustment with a difference of 0.2MPa, facilitating precise adjustments by operators according to different working conditions.
The Y-25B Medium-Low Pressure Relief Valve is particularly suitable for applications such as the walking systems of engineering machinery, hydraulic circuits of agricultural equipment, and small stamping machines. It can perform multiple functions, including system overload protection, pressure maintenance, and multi-level pressure control. The installation interface complies with the GB/T2877 standard, supporting both plate and pipe connection methods, and is compatible with the main domestic hydraulic equipment interface specifications. During use, it is recommended to regularly check the sealing condition of the valve body and maintain the cleanliness of the hydraulic oil at no less than NAS 9 grade.
Y-25B 中底压溢流阀
的详细介绍天榆液压气动Y-25B中底压溢流阀/Y25B
Y-25B 中底压溢流阀
一、用 途
1．作安全阀时阀常闭。当阀前压力小于某调定极限值时，阀不溢流。当阀前压力超过此极限值时，阀立即打开，油液即流回油箱(或低压回路)，因此能防U：液压系统过载，保护油泵和油压系统的安全。
2．作溢流阀时阀常开常溢流。该阀与节流元件及负载并联，随着工作机构需油量的不同，阀的溢油量时大时小，以调节及平衡进人液压系统中的流量，使液压系统中的压力保持恒定。板式中压溢流阀有进出口各一个，但管式中压溢淹阀有两进口及一出口。管式。板式中压溢流阀都带有一卸荷口，平时关闭，亦只有在关闭时起溢流作用。
3．远程调压。将远程调压阀进油口和溢流阀遥控口连接，在主溢流阀设定压力范围内实现远程调压。
4．高低压多级控制。用换向阀将滥流阀遥控口和几个远程调压阀连接，能在主溢流阀设定压力范围内实现高低压多级控制。
5．作卸荷阀。用换向阀将溢流阀卸荷口和油箱连接，可使油路卸荷。
6．在液压元件试验时，溢流阀也可当节流阀进行加载。
P为进油，O为同油，L为卸荷，k为远程调压，p为测量压力接口。
7．低压溢流阀用途与中压溢流阀相同，但由于无卸荷口，故不能用於远程调压与卸荷。
6．在液压元件试验时，溢流阀也可当节流阀进行加载。
P为进油，O为同油，L为卸荷，k为远程调压，p为测量压力接口。
7．低压溢流阀用途与中压溢流阀相同，但由于无卸荷口，故不能用於远程调压与卸荷。
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