Fully welded ball valves are widely used in many area for it has
the excellent&stable working performance which general casting
ball valves could reach. Fully welded ball valves are welcomed in
various pipeline or devices such as in area of urban natural gas
transfer and urban heat supply, petrochemical, ship building,
steel, pressure regulating station, power plant and etc. This valve
could be easily installed and work normally for a long period with
necessary maintenance. Fully welded ball valve could be buried
below the group and reduce the cost the a valve chamber(some damage
would still occer in it when worker operates the valve) for general
The welding work of the connection ends of Q61Y fully welded ball
valve should be done with electro-welding or hand-welding. The
connection pup shouldn't be too short to avoid over-high
tempereture of the seat part to cause any potential damage to the
seat sealing. The valve should be totally open when installed.
Fully welded ball valves (Flanged or butt-welding connection) are
suitable for use on various kinds of pipeline from pressure Class
150 to Class 1500, PN16 to PN100 to cut off or allow the following
of medium. By using different material, the valves could be
suitable for medium such as water, steam, oil, nitric acid, acetic
acid, oxidizing substance, carbamide and etc. Manual/worm
gear/pneumatic or electric actuators could be chosen by needs.
There wouldn't be any external leakage as it's fully welded. And
spring loaded RPTFE(20% C reforced type) insert is used to ensure
there wouldn't be any problem with the designing range both of
pressure and temperature. Advanced devices are used to check the
pricision of ball manufacturing
Fully Welded Ball Valve Usage:
Urban gas: Gas exporting pipeline, main pipeline and its branches.
Heat supply: Heat exporting pipe, the main pipeline and its
Heat exchanger: On-off function on Pipeline and its branches.
Steel factory: all the pipelines carrying medium, waste gas, fuel,
coal and heat supplying system.
Various industrial devices: various pipeline system in heat
treatment, industrial coal gas and heat transfer.
Fully Welded Ball Valve
Design & Manufacturing std.:API 6D,API 608,BS 5351,GB/T 12237
Structure length std.:ASME B 16.10,GB/T 12221
Connection flange std.:ASME B 16.5,GB,JB,HG,SH,BS,DIN,JIS
Test & Inspection std.:API 598,GB/T 13927,GB/T