... 150,JIS 10K,BS10 TABLE "E"Optional Materials:Body: Cast Iron GG25, Ductile Iron GGG40, GGG50Disc: DI+Nickel painted,SS304/316,AL- ... & Pin: SS410, SS416, SS304, SS316Actuator: Lever, Worm Gear, Pneumatic and Electric ActuatorProduct characters:1. Rubber backed seat with stable valve ... actuators can be chosen.5. Special design, high flow rate and low flow resistance.6. Suitable medium: water, sewage, sea ...