BDL - L 40 E -OT ① ②③④ ⑤ ⑥ ①, multi-valve code; ②, threaded connections, L: threaded connections (port connection form table five); ③, nominal flow rate: 40 L / min ; ④, nominal pressure rating, E: 16 MPa, (see table two pressure levels); ⑤, the first joint slide valve function: O lever (see table a stem function); ⑥, the first joint spool reset , T: for spring reset mode (positioning Table III); for example: (1) ordinary O lever all the way to spring for the reset: BDL-L40E-OT; (2), M lever all the way ordinary spring reset mode: BDL-L40E-MT; (3), Y lever all the way ordinary spring reset mode: BDL-L40E-YT; (4), O lever all the way ordinary ball positioning mode: BDL-L40E-OW;