Water meter outlet and stop valve screw connection - has collar on stop ledge, and valve cone shaft near disc seal

摘要: The pipe socket end (2), protruding into the box nut (4), for which it has a stop ledge (19), is also fitted with an inward valve-seating collar (6) in cross-sectional plane of ledge. It used screw coupling connecting water meter outlet to valve. (1) contains spring-pressed valve cone (8), shaft turned away from collar. Its thread (3) removable cap (13), not wider than hole (5). A hard disc seal (14) clamped inside, and guide cross-piece (11) located between this inside (12) on pipe. This needs neither special integrated return flow stop, nor separate stop.