6269 Butterfly valves
·【Main technical parameters】
Type: Flat offset casting
Valve size: 2"~ 40"
Nominal pressure: ANSI 150LB~300LB
Connection: Flanged type or wafer type
Material: A216 WCB、A351 CF8、A351 CF8M、A351 CF3、A351 CF3M（according to customer requirements）
Bonnet: Standard type -29~+230℃
extended type +230~+300℃ -46词-30℃&苍产蝉辫;
Notice the range of working temperature and pressure for different materials.
Packing: PTEE，flexible graphite, steel wire reinforced flexible graphite
Body coating: Silver grey (epoxy resin). No coating shall be added if the body material is stainless steel.
Disc type: Double—eccentric rotary type
Seat type: PTFE/RTFE/PPL resilient soft seat
Flow characteristic: Approximate equal percentage
Rated travel：0~70° or 0~90°
Seat leakage: Zero leakage
·The seat is made of PTFE/RTFE/PPL resilient material, designed with special U type seal ring, having automatic compensation function and long service life.
·The disc adopts double—eccentric structure and the sea ing face is partial ball face. It forms spherical linear sealing with the seat, with good sealing performance and low opening and closing torque.
·The va ve flow characteristic is approximate equal percentage curve. It can be used for control and shut—off. It meets AP1607 fireproof requirements.
·【Scope of application】
It is widely used in petroleum, chemical industry, light industry, electric power and other industries, and is especially suitable for large size pipes in oil depots, oil pipe output and water treatment systems, for local control and remote automatic control during production.