API BUTTERFLY VALVE we could supply the following valve,the Features is as follow: 1) Composed of wafer and flange 2) Uses: petroleum, chemical industry, industrial environmental protection, water treatment, high rise buildings, water supply and draining 3) Reliable hermetic capability 4) High temperature resistant, long life, high antisepsis 5) Design standard: API609-83 6) Flange connection dimension: ANSI B 16.5 7) Structure length: ANSI B 16.10-1992 8) Pressure test: API 598-82