Size: 1″-2″, DN25-DN50 Material: 316L/1.4404, 1.4435 NB2 Fe<0.5% Inner Surface Treatment: Ra0.4μm, Mechanical polishing, Electro polishing Diaphragm: Double diaphragm: EPDM+PTFE; Single diaphragm: EPDM, FPM, Silicon Operations: Manual/Pneumatic Control: configurable, 1) Control Unit C-TOP, 2) positioner IL-TOP, 3) mechanical valve regulator, 4) Position Sensor