Product Description
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.Key lock
Locks can be used to lock the manual valve when it is fully open
or closed so as to prevent non-working personnel from pulling the
handle which may result in misoperation of valve.It can also
avoid opening or closing of valve resulting from the shock from
pipelines or unpredictable factors that may cause an accident.For
working pipelines such as combustible and explosive oil,gas and
chemical medium,or for field piping site,the locking mechanism is
especially useful.
3.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.
4.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.
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.Automatic body cavity relief
When the body pressure going up un-normally as the unstable
factor,the trunnion ball valve downstream seat will be pushed by
un-normally pressure,and the release the un-normally pressure
automatically,it doesn��t damage to the sealing of upstream
seat.The unnormalpressure which in the
floating ball valve body will release the pressure into the
upstream pipe directly,it doesn't damage to the sealing of the
downstream seat.
7.Various driving types
The top pad of valve designed according to ISO ***1,which is
convenient for connection and exchange of various drivers.The
common driving types are manual,electrical,pneumatic and
pneumatic/hydraulic.
Country: |
China |
Model No: |
Q47F
|
FOB Price: |
(Negotiable)
Get Latest Price
|
Place of Origin: |
china |
Price for Minimum Order: |
- |
Minimum Order Quantity: |
1 Unit |
Packaging Detail: |
Plywood Case |
Delivery Time: |
according to order quatity |
Supplying Ability: |
20000 Ton per Year |
Payment Type: |
- |
Product Group : |
- |