求翻译：减压阀：在水循环系统中设置的，是自动维持阀门出口处的压力恒定（在0—4bar压力范围内）从而保证系统的正常工作。稳压阀前后设压力表两只，喷淋管主管末端设有压力表，以精确检测系统压力。稳压阀可有效的控制运行压力和水量，保证水压和流量达到国标要求。是什么意思？

Pressure reducing valve set: in the water circulation system automatically maintain constant pressure valve at the outlet (in the pressure range of 0-4bar) in order to ensure the system work properly. Set before and after the regulator valve pressure gauge two in charge of the end of the spray pipe

Pressure relief valve: the water circulation system is set in the automatic valve outlet pressure constant (0 - 4 bar pressure range) to ensure that the system is working. Voltage regulator valve pressure gauge front and only two, and the sprinkler pipe end with a pressure gauge to accurately detect

Pressure relief valve: Establishes in the water circulating system, thus is the automatic maintenance valve exit pressure constant (in 0-4bar pressure scope) the guarantee system normal work.Around the constant voltage valve supposes pressure gauge two, sprays the supervisor tube terminal to be equi

Relief valve: set in the water circulation system, are automatically maintained constant pressure at the valve outlet (in 0-4bar pressure range) in order to ensure the normal operation of the system. Regulator valve set pressure gauges before and after two, spray tube head end with pressure gauge to

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