1.manual operated 手动with limited switch 带限位开关2. All valves should be as per below comply with below Specification. 各阀门应符合下列规格。 Internal Lining for non-corrosion resistant parts coming in contact with medium to have FBE suitable portable water(ART.6.2)内衬用于隔离与非防腐部件接触的媒质,使FBE适合加水