ASTM A351-CF8M(DIN 1.448) Stainless steel
ASTM A351-CF8(DIN 1.4308) Stainless steel
1/4"- 4" 1000 SPI(PN63)/450deg.F
15% reinforced glass fibrous Telflon seats
Blow-out proof stem S/S 316,adjustable stem packing
100% tested air-under water at 100 PSI (6 Bars) open&close position.
1)Small flow resistance.
2)Swift opening and closing at 90° degree.
4)Excellent sealing performance.
6)Wildly used in water works, power generating factories, chemicals, food,paper making and pharmaceutical industries.
7)For chemical and industrial application.
8) High quality investment and casting body and caps.
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Ball valves, as the name implies, are stop
valves that use a ball to stop or start the flow. The ball performs the same
function as the disk in the globe valve. When the valve handle is operated to
open the valve, the ball rotates to a point where the hole through the ball is
in line with the valve body inlet and outlet. When the valve is shut, which
requires only a 90-degree rotation of the handwheel or Wormgear for most
valves, the ball is rotated so the hole is perpendicular to the flow openings
of the valve body, and flow is stopped. Most ball valves are of the
quick-acting type (requiring only a 90-degree turn to operate the valve either
completely open or closed), but many are planetary gear operated. This type of
gearing allows the use of a relatively small handwheel and operating force to
operate a fairly large valve. The gearing does, however, increase the operating
time for the valve. Some ball valves contain a swing check located within the
ball to give the valve a check valve feature. Ball valves are normally found in
the following systems aboard ship: seawater, sanitary, trim and drain, air,
hydraulic, and oil transfer.
DBV offers small sized ball valves in pne
piece uni-body, two piece split body and three piece bolted body, All small
sized ball valves manufactured and supplied by Vatac are with the following
● Manufactured under ISO 9001:2008 Management System, with CE PED
& API 6D Certified
● Standards compliance to API 6D, BS 5351, ASME B16.34, DIN 3202 or
● Threaded or Welded Ends precised to international standards
● Fire Safe, Anti-staic and Stem Blow-out Proof
● Optional Locking Device or Stem Extension
● Optional Direct Mounting to ISO 5211
● Full Port or Regular Port options
● NACE MR-01-75
DBV offers small size ball valves
including, but not limited to
▲ One piece ball valve ▲ Two piece ball valve ▲ Three piece ball valve
▲ Top Entry Ball Valve▲ Wafer Body Ball Valve ▲ Multi-port Ball
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内容附件: DBV Catologue of Ball Valve
small size ball valve