... diameter hole: 8 aperture: 135 *95mm Operating features:First, pneumatic, no spark, especially applicable to explosion-proof;Second, medium flow can ... use;Fourth, medium outlet pulse-free, no impact exercise, feed fluid uniformity;Fifth, the diaphragm uses corrosion resistant material, can transmit various ... can contact with us at any time. printing machine spare Double-Phase Pneumatic Diaphragm Pump