Two Way Stainless Steel Flanged Ball Valve , Stem Reduced Bore Ball
Valve Class 300
- Floating ball,full bore or reduce bore.
- Blow-out proof stem design.
- PTFE/RPTFE seat seal(Seat seal material could be decided by customer's request or according to valve's medium & temp.
- Fire-proof and anti-static design if need.
1. Bow-out proof stem
For the purpose of preventing the stem from flying off resulting in
abnormal rising of the inner pressure of valve,shoulder is fixed at
the lower part of the stem.In addition,in order to prevent leakage
resulting from burnout of packing set of the stem in a fire,thrust
bearing is set at the contact position of the shoulder at lower
part of the stem and valve body.Thus an inverse seal seat is formed
which will prevent leakage and avoid accident.
2. Anti-fire safe design
When the trunnion ball valve be used normally,its sealed by seat
and ball surface,seat retainer sealed by O-ring and body,this is
soft sealed and reliable sealing.When the seat and O-ring are
burnt,the seat retainer and body will be sealed by expanded
graphite.Thus act anti-fire safe purpose.
3. Anti-static device
In order to prevent friction among ball,stem and PTFE that
generates static electricity which may light the combustibles and
explosives that cause an accident,in this ball
valve,static-conduction spring is set between the stem and the
ball,the stem and the body.Thus static electricity is conducted to
ground and system safety is secured.
4. Free leakage of body Sealed construction
The connective position of valve body and bonnet is double sealed
by gasket and O-ring,on this base,such factors as fire,high
temperature,shock and uneven opening or closing of the torque all
can't induce external leakage.
5 . Low torque in operation
The self-lubricated bearings are installed at the friction of
stem,resulting in wear resistance,fiexibility of operation and low torque.
6. Double block&bleed(DBB)
When ball is full open or close position,the transmitter substance
in center cavity of body can be released by drainage and emptying
devices.In addition,the over loaded pressure in the center cavity
of valve can be released to low pressure end by self relief seat.
7. Emergency sealing
Compound injection holes are designed and compound injection valves
are installed at locations of stem/cap and body support of side
valve.When sealing of stem or seat is damaged to induce leakage,the
compound can be used to do the second time sealing.A concealed
check valve is installed in side of each compound injection valve
to prevent compound from out flowing due to the action of
transmitter substance.The top of the compound injection valve is
the connector for fast connection with compound injection gun.
8. Extension stem
For the underground installed valve,the stem can be lengthened and
for the convenience of operation the corresponding compound
injection nozzle and drainage valve can be extended to the top of
9. Various driving types
The top pad of valve designed according to ISO 5211,which is
convenient for connection and exchange of various drivers.The
common driving types are manual,electrical,pneumatic and
|Product Name||2PC Stainless Steel Flanged Ball Valve|
|Body||ASTM A351 CF8/CF3/CF3M/CF8M|
|Shaft||A182 F6 or F304/316|
|Operation||Handle, Gear Box, Pneumatic, Motor|
|Working Medium||Water, Oil, Gas|
|Design Standard||API6D, API608, BS5351|
|Pressure & Temp. Standard||ASME B16.34|
|Face to Face Dimension Stanard||ASME B16.10|
|Flange Standard||ASME B16.5|
1. quick delivery, high quality and reasonable and fine.
2. We can make products according to the needs of customers.
3. Welcome to inquiry and purchase later in the day for us.
4. Strict quality control system .welcome third party for quality
5. After -sale service available, Feedback will be gave in 24hours