Ball Valve

1
Shengli Oilfield RT Group

• A comprehensive industrial group integrated of
  RD, design, and manufacturing. RT Group insists
  on the business principle of "To Create More
  value for The Customers.
• Contacts
• Tel [phone]
• Fax [phone]
• E-mail marketing_at_rtpetro.com
• Add No. 1, Tai'er Zhuang Road, Hi-tech
  Industrial Development Zone, Dongying, Shandong,
  China

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Oilfield Ball Valves
Material WCB? WC6 ?WC9?A105? F11? CF8?
CF8M Working pressureCLASS150-CLASS1500 Nominal
diameterDN50-DN300 Temperature
-196?-650? Connection typeflange, weld,
thread Suitable medium water, oil,
gas Oilfield ball valve is mainly used to
disconnect or connect the medium and can also be
used to adjust and control the fluid. V type ball
valve can carry out the relatively precise
adjustment and control of flow volume, while
threeway ball valve is used to dispatch the
medium and change the flow direction of the
medium. Compared with other types of valves, ball
valve has the following advantages The fluid
resistance is small, and ball valve is the one
which has the smallest fluid resistance among all
types of valves, even the fluid resistance of the
necking ball valves is quite small. The process
of opening and closing is fast and convenient. As
long as the valve stem rotates 90 degrees, the
ball valve completes the total opening or closing
action, which is easy to realize the fast opening
and closing. The structure design of elastic
materials has been adopted for floating ball
valve sealing ring. However, the structure design
of the elastic float valve seat has been adopted
for the trunnion mounted ball valve. It can be
designed to have the sealing functions, such as
fireproof and antistaticelectricity. Full
welding of the ball valve body can be directly in
the ground, so that in case the valve from
erosion and it is the ideal valve for oil and
natural gas pipeline.
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Ball Valve Manufacturing

• Firstly, ball valve manufacturing process is
  divided into three aspects ,the shell, other
  components and the purchased part . After the
  casting, material properties test, solution
  treatment, intergranular corrosion test,
  machining, water pressure test for strength and
  air tightness test ,the degreasing treatment will
  be done to the shell.
• Other components need to go through the factory
  inspection of materials, stainless steel solution
  treatment, machining and then be processed in
  degreasing. After the factory re-inspection , the
  purchased parts will be degreased . After
  degreasing treatment assembly will be followed ,
  then is the operating performance (including the
  measurement of torque) test, and next is 0.05MPa
  tightness test, and then is 1.6MPa tightness
  test. And finally after blowdown ,the packaging
  will be done.

4
Ball Valve Working Principle

• Ball valve is evolved from the plug valve. It
  also has the 90 degree rotation but the ball
  valve is a ball with a circular through hole or
  passage through its axis. The ratio of the sphere
  to the channel should be the same, that is, when
  the sphere is rotated 90 degrees, the inlet and
  outlet should be completely spherical to cut off
  the flow.
• It only needs to rotate 90 degrees of operation
  and a small driving torque to close the ball
  valve tightly. The completely equal inner cavity
  provides a straight-through runner of small
  resistance for the media. Ball valves are
  generally considered to be the most suitable for
  direct opening and closing, but with recent
  developments, it has been designed to be
  throttling and controlling flow.
• The main features of the ball valve are compact
  structure, easy operation and maintenance, and it
  is not only suitable for water, solvents, acids
  and natural gas and other general working media,
  but also for medium of poor working conditions,
  such as oxygen, hydrogen peroxide, methane and
  ethylene. Ball valve body can be both a whole and
  a combined type.

5
Ball Valve Function

• Ball valve is used in the pipeline to cut off,
  distribute and change the flow direction of the
  medium mainly. It can be closed tightly only with
  a 90 degree rotation and a small turning moment.
  The valve is most suitable to work as the switch
  and block valve. Because the valve seat insert of
  ball valves are usually made of rubber, nylon and
  PTFE, its service temperature is limited by the
  material of valve seat insert.
• The cut-off effect of the ball valve is achieved
  by the metal ball and the plastic valve seat
  pressing with each other under the action of the
  medium (floating ball valve). Under certain
  contact pressure, distortion of elastic-plastic
  of valve seat insert occurs in some areas. This
  deformation can compensate for the ball's
  manufacturing accuracy and surface roughness to
  ensure the sealing performance of the ball valve.
  And because the seat insert of ball valve is
  usually made of plastic, the fire-resistant and
  fire-retardant performance should be considered
  in the choice of ball valve structure and
  performance, especially in petroleum, chemical,
  and metallurgical departments, and the equipment
  and pipe system of flammable and explosive
  media, it should pay more attention to fire
  resistance and fire prevention to use ball
  values.
• Shengli Oilfiled RT Group offers types of oil
  and gas pipeline ball valves.

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Thanks for your time!

• Contacts
• Tel [phone]
• Fax [phone]
• E-mail marketing_at_rtpetro.com
• Company Shengli Oilfield RT Group