KEYSTONE F990CEE4蝶阀现货供应， 原装正品 凯斯通F990CEE4 DN200蝶阀大量现货。现货KEYSTONE F990CEE4DN200+F79U024DA气动蝶阀   现货keystoneF990CEE4手动蝶阀   现货KEYSTONE F990CEE4光杆蝶阀；现货F990CEE4阀座 F990CEE4密封圈，胶圈。

                    The Figure 990 butterfly valve has a split, wafertype
body, features a one piece disc stem and field
replaceable seat.
The range of available materials makes these valves
suitable for a wide variety of applications.
Features
• Factory testing of every valve at full rating
ensures 100% bubble-tight shut-off.
• Standardised actuator flange for easy
operator interchangeability and mount
direct to Keystone Range of actuators.
• One-piece wafer-thin disc-stem provides
high strength and absolutely positive disc
control and gives the very minimum
obstruction to flow. Its crevice free surface
makes it ideal for hygienic duty.
• Primary seal formed by the seat/shaft/hub
contact exceeds the pressure rating of the
valve. Body is totally isolated from the
flowing medium.
• Secondary shaft seal is suitable for
pressure and vacuum is self adjusting.
• Patented dove-tail seat requires no
bonding. Makes seat replacement simple
and fast. Extra heavy edge section resists
tearing.
• Hub seal is provided by preloaded contact
between flatted seat surface and rounded
polished disc-hub area for positive sealing
at all disc positions.
• Moulded-in O-ring provides positive flange
sealing and eliminates the need for
gaskets.
• Heavy duty top bushing absorbs side
thrust loads. Self-adjusting sealing for both
directions is also suitable for vacuum.
General application
The figure 990-102/003 is the ideal valve
for use in the food and beverage industries.
The figure 990-007 is teflon lined for use in
semi-aggressive chemical industries. Max
pressure 7 bar.
The figure 990-002 is rubber lined for use
in the process industries. Max pressure 7
bar.
Warning !
Not for use on unstable gasses.
Not for end of line use.
Technical data
Pressure (bar) : 10
Temperature (°C) : -10 to +150
Sizes (mm) : 25-300
Flange
accommodation : PN 10/16
ANSI 150
BST’E’

           泰科  凯斯通   KEYSTONE F990 F992系列蝶阀 调节型蝶阀F990/F991/F992 *Keystone标准顶法兰*关闭严密*阀杆两级密封*寿命长*连接方式：对夹、支 耳