压差调节阀即自力式压差控制阀，不需外来能源，依靠被调介质自身压力变化进行自动调节，自动消除管网的剩余压头及压力波动引起的流量变化，恒定用户进出口压差，有助于稳定系统运行。 压差调节阀特别适用于分户计量或自动控制系统中。
... pressure-difference detector 压差探测器 pressure-difference valve 压差调节阀 pressure-difference sampler 压差式采样器 ...
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差压调节阀 [自] differential pressure regulating valve ; differential pressure control valve ; differential pressure
自力式差压调节阀 self operated differential pressure regulator
自力式差压双座调节阀 ZZCN
自力式差压单座调节阀 ZZCP
防爆差压调节阀 ZZC
介绍了波纹管平衡型自力式压差调节阀的结构与工作原理。
Structure and operation principle of the bellows-balance self-operated pressure regulator are described in the paper.
用压差调节阀形成的压差克服蒸发器内制冷剂的流动阻力，把低压液体制冷剂超量供入蒸发器。
Using the pressure difference formed by pressure difference regulating valve, overcome flow resistance of refrigerant in evaporater, supply excess low pressure liquid refrigerant for evaporater.
因而阀流通能力比一般调节阀大且无泄漏，在许用压差范围内可作切断阀用。
Thus the valve control valve flow capacity than the average large and no leakage in the range of allowable pressure shut-off valve can be used.
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