Saturday, April 28, 2007

Outline of ball valve

Outline of ball valve

ball valveApplication
Floating ball valves are suitable for use on various kinds of pipelines of Class 150 to Class 1500, PN16 to PN100, and JIS 10K to JIS 20K to turn on or off the pipeline medium, of which the operation types include manual, worm gear and pneumatic or electric actuators.
Construction and features
ζ Reliable seat seal ζ Fire safe design ζ Reliable stem seal ζ Anti-static feature ζ Wrong operation prevention ζ Mounting pad provided
Standards and specification
ζ Design & manufacture:API 6D、API 608、ASME B16.34、ANSI/AWWA C507、MSS SP-72、BS 5351、BS 6364、BFCI 70-2、ISO 5211、NACE MR0175 . ζ Connection ends:ASME B16.5、ASME B16.47、API 605、MSS SP-44、ISO 7005-1、JIS B2238、BS 12627、ASME B16.25、ASME B16.11、BS 12760 . ζ Face to face dimension:ASME B16.10、ISO 5752、BS 558、BS 12982 ζ Testing & inspection:API 598、API 6D、API 607、API 6FA、BS 6755、BS 12569、MSS SP-82、MSS SP-61
ζ Normal pressure or rating:Class 150 ~ Class 2500、JIS 10K ~ 20K、PN 10 ~ PN 420 ζ Normal diameter or bore:NPS1/2~NPS10、DN15~DN250 ζ Applicable temperature:-196℃~540℃ ζ Operation type:Manual, worm gear, pneumatic, electric
■Construction and features of floating ball valve
ζ Reliable seat seal
Reliable seat seal-ball valve The structure design of elastic sealing ring has been adopted for floating ball valves. This seat design features a bigger sealing pressure ratio between the ring surface and the ball when medium pressure gets lower, where the contacting area is smaller. Thus, the reliable seal is ensured. When the medium pressure gets higher, the contacting area between seat ring and ball becomes bigger as the sealing ring transforms elastically to undertake the bigger force pushed by the medium without any damage.
ζ Fire safe design

Fire safe design-ball valve
With the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, stem back seat gasket, gland packing, and the sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature. CHAODA’s specially designed structure of auxiliary metal to metal seal is provided to effectively prevent both internal and external leakage of the valve. As required by customers, CHAODA’s floating ball valves with fire safe design can meet the requirement of API 607, API 6FA, BS 6755 and JB/T 6899.

More information click the follow website.

http://valve-wow.blogspot.com

2 comments:

valves said...

Your article is amazing. It helped me a lot with my research about different kinds of valves and actuators and how this stuff works with other mechanical devices...

again,thanks a lot.

mugen

butterfly valves said...

To familiarize yourself in this kind of industrial application , knowing how an automation works is a wisely action and will positively keep us in track. Thanks for sharing this information.Good Day!