液压安全阀等多重保险装置。
Multiple safeties such as the hydraulic relief valve, etc...
液压安全阀安装在油罐顶部，与呼吸阀并列使用，在呼吸阀失灵时起安全作用。
Hydraulic safety valve series shall be installed on the top the center of the tank, in order to withstand the damage to the tanks caused by operating failure of breather valve.
分析故障重点在主安全阀和液压水泵。
Analysis of the focus in the main safety valve failure and hydraulic pump.
安全阀可以防止因液压系统故障等原因而引起的油缸输出推（拉）力急骤下降，可确保加工安全。
The pressure safety devices can help to retain the draw bar pulling force in the event of a breakdown of the hydraulic system.
以深度精制的石蜡基馏分油为基础油，添加具有改善油品性能的添加剂研制了液压支架安全阀校阀油。
A calibration valve oil for hydraulic shield safety valves was formulated by a base oilobtalned from the distillate of a deep-refining paraffinic crude with qualified additives.
根据仿真分析结果，液压马达提升侧单向溢流安全阀开启压力应大于该侧最大稳定压力的1.9倍。
According to the simulation results, the opening pressure for the hydraulic motor lifting side cartridge one-way relief valve should be more than 1.9 times of the pressure of the maximum stable side.
针对目前国内液压支架用安全阀存在不足，研制了一种新型液压支架用大流量安全阀。
For the limitation of the present relief valve in hydraulic supports, a new type large flux relief valve used in hydraulic supports was introduced.
该安全阀使叉车或起重机的起升液压驱动回路既有高效率的上升速度，又有可靠的安全下降速度。
The safety valve can make the lifting fluid-pressure drive circuit of a fork lift truck or a crane obtain not only high efficiency ascending speed, but also reliable and safe descending speed.
试验时为了避免转向液压泵安全阀的开启，在试验前，必须将转向液压泵安全阀锁死。
Tests in order to avoid turning the hydraulic pump safety valve open, during the trial before the safety valve must be locked Steering hydraulic pump.
在锅炉未点火启炉之前，采用液压马达助力装置主动提拉安全阀阀杆，使安全阀开启。
Before boiler working, pull the haulm of safe valve by hydraulic motor set until the safe valve spring.
在锅炉未点火启炉之前，采用液压马达助力装置主动提拉安全阀阀杆，使安全阀开启。
Before boiler working, pull the haulm of safe valve by hydraulic motor set until the safe valve spring.
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