原装德国力士乐比例阀4WRZ25E220-70/6EG24N9TK4/D3M [比例阀价格_厂家

原装德国力士乐比例阀4WRZ25E220-70/6EG24N9TK4/D3M

4WREE6E32-2X/G24K31/A1V-655 REXROTH比例阀，德国力士乐REXROTH全新原装进口品牌备件，产品质量保证，大量现货库存，特价X势供应；
REXROTH比例阀定流量阀和恒流量调节阀不同的是：
1、定流量阀只有一个阀瓣，由这个阀瓣直接感受阀门的前后差压，执行改变阀门阻力的动作，可成为“直动式变阻力阀”，它不能在线调节流量，因此使用定流量阀无法实施改变总流量的节能运行，只有在一些中央空调系统中见到。
2、恒流量调节阀是以补偿方式时行变阻力的动作，它有俩个阀瓣，一个是调节阀瓣，用于补偿节流孔前后的差压，因此可成为“补偿式变阻力调节阀”其原理是：利用节流孔前后的差压，作为补偿动作的驱动力，补偿并保持节流孔前后差压的稳定，从而保持流量的恒定，调节节流孔的大小就可获得不同的流量。因此，它既可以调节流量。也可以在系统水利工况变化时保持流量恒定，在系统中它既可恒定各个支路的流量，实现流量的均衡输配，也可以随时改变和调节各支路的流量，实现动态平衡。如果每年在初寒到严寒和严寒到末寒是进行俩次流量调节，即可实现“分阶段改变流量的质调节”的节能运行方式。恒流量调节阀的调节简单方便，但对于较大的系统来说，每年进行俩次调节仍然是个负担，而且恒流量调节阀的价格高，虽然当年可以收回，但对用户仍有较大的心理压力。

力士乐REXROTH二位四通和三位四通比例方向阀直控式，阀芯带位移电反馈，带集成式放大版（OBE）4WREE
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原装德国力士乐比例阀4WRZ25E220-70/6EG24N9TK4/D3M

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原装德国力士乐比例阀4WRZ25E220-70/6EG24N9TK4/D3M

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