... operate, Electric actuator, Pneumatic operator, Opening indicator, With limit switch, Others.8. Type: Non rising stem, Rising stem9 ... Electric power, Petrochemical, Metallurgical, Firefighting / Fire fighting, or other industries. Pressure Testing & Quality Control: Working Pressure10 ... , Ductile iron, Carbon steel, Stainless steel, with or without EPDMSeatEPDM / NBR / VITON / PTFEStemStainless steel, ...