北京华德液压全系列 具体型号及报价请联系客服
北京华德换向阀部分型号如下：
4WEH25E50B/OF6AG24NEZ44WEH32B50B/6EG24NE25L
4WEH25E50B/OF6AG24NEZ54WEH32C50B/6CW220-N9ET25L
4WEH25E50B/OF6AG24NEZ5L4WEH32C50B/6EG24NE25L
4WEH25E50B/OF6AG24NTZ44WEH32D50B/6CW220-N9ET25L
4WEH25E50B/OF6AG24NTZ54WEH32D50B/6EG24NE25L
4WEH25E50B/OF6AG24NTZ5L4WEH32E50B/6CW220-N9ET25L
4WEH25E50B/OF6AG24NZ44WEH32E50B/6EG24NE25L
4WEH25E50B/OF6AG24NZ54WEH32F50B/6CW220-N9ET25L
4WEH25E50B/OF6AG24NZ5L4WEH32F50B/6EG24NE25L
4WEH25E50B/OF6AW220-50NETZ44WEH32G50B/6CW220-N9ET25L
4WEH25E50B/OF6AW220-50NETZ54WEH32G50B/6EG24NE25L
4WEH25E50B/OF6AW220-50NETZ5L4WEH32H50B/6CW220-N9ET25L
4WEH25E50B/OF6AW220-50NEZ44WEH32H50B/6EG24NE25L
4WEH25E50B/OF6AW220-50NEZ54WEH32J50B/6CW220-N9ET25L
4WEH25E50B/OF6AW220-50NEZ5L4WEH32J50B/6EG24NE25L
4WEH25E50B/OF6AW220-50NTZ44WEH32L50B/6CW220-N9ET25L
4WEH25E50B/OF6AW220-50NTZ54WEH32L50B/6EG24NE25L
4WEH25E50B/OF6AW220-50NTZ5L4WEH32M50B/6CW220-N9ET25L
4WEH25E50B/OF6AW220-50NZ44WEH32M50B/6EG24NE25L
4WEH25E50B/OF6AW220-50NZ54WEH32P50B/6CW220-N9ET25L
4WEH25E50B/OF6AW220-50NZ5L4WEH32P50B/6EG24NE25L
4WEH25F50B/6CW220-N9ET25L4WEH32T50B/6CW220-N9ET25L
4WEH25F50B/6EG24NE25L 4WEH32T50B/6EG24NE25L
4WEH25G50B/6CW220-N9ET25L4WEH32U50B/6EG24NE25L
4WEH25G50B/6EG24NE25L 4WEH32Y50B/6CW220-N9ET25L
4WEH25H50B/6CW220-N9ET25L4WEH32Y50B/6EG24NE25L
北京华德液压全系列 具体型号及报价请联系客服
北京华德换向阀部分型号如下：
4WEH25H50B/6EG24NE25L 4WEH32D50B/6CW220-N9ET25L
4WEH25J50B/6CW220-N9ET25L4WEH32D50B/6EG24NE25L
4WEH25J50B/6EG24NE25L 4WEH32E50B/6CW220-N9ET25L
4WEH25L50B/6CW220-N9ET25L4WEH32E50B/6EG24NE25L
4WEH25L50B/6EG24NE25L 4WEH32F50B/6CW220-N9ET25L
4WEH25M50B/6CW220-N9ET25L4WEH32F50B/6EG24NE25L
4WEH25M50B/6EG24NE25L 4WEH32G50B/6CW220-N9ET25L
4WEH25P50B/6CW220-N9ET25L4WEH32G50B/6EG24NE25L
4WEH25P50B/6EG24NE25L 4WEH32H50B/6CW220-N9ET25L
4WEH25T50B/6CW220-N9ET25L4WEH32H50B/6EG24NE25L
4WEH25T50B/6EG24NE25L 4WEH32J50B/6CW220-N9ET25L
4WEH25U50B/6CW220-N9ET25L4WEH32J50B/6EG24NE25L
4WEH25U50B/6EG24NE25L 4WEH32L50B/6CW220-N9ET25L
4WEH25Y50B/6CW220-N9ET25L4WEH32L50B/6EG24NE25L
4WEH25Y50B/6EG24NE25L 4WEH32M50B/6CW220-N9ET25L
4WEH32A50B/6CW220-N9ET25L4WEH32M50B/6EG24NE25L
4WEH32A50B/6EG24NE25L 4WEH32P50B/6CW220-N9ET25L
4WEH32B50B/6CW220-N9ET25L4WEH32P50B/6EG24NE25L
4WEH32B50B/6EG24NE25L 4WEH32T50B/6CW220-N9ET25L
4WEH32C50B/6CW220-N9ET25L4WEH32T50B/6EG24NE25L
4WEH32C50B/6EG24NE25L 4WEH32U50B/6EG24NE25L
4WEH32D50B/6CW220-N9ET25L4WEH32Y50B/6CW220-N9ET25L
4WEH32D50B/6EG24NE25L 4WEH32Y50B/6EG24NE25L
4WEH16B50B/6EG24NE25L 4WEH16E50B/6EG24NETZ5
减压阀的工作原理及选用再旋转旋钮1，进气阀芯8的顶端与溢流阀座4将脱开，膜片气室6中的压缩空气便经溢流孔12、排气孔11排出，使阀处于无输出状态。总之，溢流减压阀是靠进气口的节流作用减压，靠膜片上力的平衡作用和溢流孔的溢流作用稳压；调节弹簧即可使输出压力在一定范围内改变。为防止以上溢流式减压阀徘出少量气体对周围环境的污染，可采用不带溢流阀的减压阀(即普通减压阀)，其符号如图14—1c所示。先导式减压阀当减压阀的输出压力较高或通径较大时，用调压弹簧直接调压，则弹簧刚度必然过大，流量变化时，输出压力波动较大，阀的结构尺寸也将增大。为了克服这些缺点，可采用先导式减压阀。先导式减压阀的工作原理与直动式的基本相同。先导式减压阀所用的调压气体，是由小型的直动式减压阀供给的。若把小型直动式减压阀装在阀体内部，则称为内部先导式减压阀；若将小型直动式减压阀装在主阀体外部，则称为外部先导式减压阀。图14—2所示为内部先导式减压阀的结构图，与直动式减压阀相比，该阀增加了由喷嘴4、挡板3、固定节流孔9及气室B所组成的喷嘴挡板放大环节。当喷嘴与挡板之间的距离发生微小变化时，就会使B室中的压力发生根明显的变化，从而引起膜片10有较大的位移，去控制阀芯6的上下移动酷酷客，使进气阀口8开大或关小、提高了对阀芯控制的灵敏度，即提高了稳压精度=