... T6143-2004,ISO 5167-1,AGA Report No.3 2,The discharge coefficient is superior than Grade 0. ... T6143-2004,ISO 5167-1,AGA Report No.3 etc standards. 2,Patent structure for orifice plate allocation, measuring ... Vertical installation and horizontal installation are all available.7,Simple structure and low price.8,According to the ... type.9,Product range:PN1.6~32MPaDN50 ~700mm Simple Type Orifice Meter Fitting