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control chamber [ ] through the held open, -way hydraulic relay valve ( w-hrv) [ ]. this creates superior closing force that moves the diaphragm assembly [ ] to a closed position. upon pressure rise command, the w-hrv switches, releasing pressure from the control chamber. the hydrometer then opens, measuring...
efficiency woolen fabric shearing machine / textile shearing machine with rollers changzhou wujin lijia smooth textlle machinery factory cable extruder machine high speed multi function cable extruder machine line of dia mm v hz dongguan tianxin wire &cable equipment co.,ltd. dongguan zhongzhi testing instruments...