soft seal butterfly valve

soft seal butterfly valve

Purpose and characteristic
The soft series of butterfly valves has several connection types such as clamp,flange,welding,protruding ear type(socket around body).and uses 3-dimension eccentric structure.with almost no attrition between seat and disc.with Function of sealing tighter and tighter and no matter under condition of sub zero or high tem-Perature of high pressure all have fine sealing performance.lt is is widely utilzed in foodstuff,pharmacy,petroleum,chemical industry,light industry,textile,metallurgy,mine,energy etc,as well as construction,environmental protection,water supply and drainage piping for opening and dosing or as just capacity of medium.

1, the design and manufacture: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357.
2, flange size: JB/T74 ~ 90 (JB74 ~ 90), GB9112 ~ 9131, HGJ44 ~ 76, SH3406, ANSI B16.5, JIS B2212 ~ 2214, NF E29-211, DIN2543.
3, the structure length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202.
4, the main test test: JB / T 9092, API 598

Adopt stamdard :
Cibbect dunebsuib : ANSI B16.5a-92 MSS SP-44-91 API609-83
Face to face: ANsI B16.10-86 API 609-91 MSS SP-68-97
Oressyre test: APl 598-94 MSS SPһ44-91 APl609-83