... ;2.Use one-piece guided structure ,large guided area;3. Available to two-way fluid, can bear larger differential ... (table 1),linear (table 2),quick open (table 3)Plug form top guided single seat plugBonnet formNormal temperature type ... actuators Accessorypositioner ,solenoid valve ,air set ,lock valve ,limit switch,valve positioner transmitter,hand wheel etcApprovalsGB/T 4213-2008Structure length ...