supply of gv is 778 bronze ltb2 npt 1mpa 40mm is 778 gate valve body matrial end conn. bronze is 318ltb2 bsp pr. rating cl.1 1mpa nom. size 40mm material cum standard gm is 318 ltb2 pressure class rating class 1 product 1. handwheel c.i. steel is 210 fg 200 ci is 4030 2. packing asbestos 3. stem is 6912 gr flb brass 4. end connection details screwed female threads to is 554 class 1 parallel test pressure b.t.p 1.5 mpa hyd, back seat and seat test pressure. 1.0 mpa hyd.