Triple eccentric/Offset metal to metal seat Butterfly Valves DN600 PN25

Name:	Triple eccentric/Offset metal to metal seat Butterfly Valves DN600 PN25
Material:	Body: A105
Nominal Pressure:	PN25
Nominal Diameter:	DN600
End Connection:	BW
Structure:	Triple Eccentric
Operation:	Gear box
Valve type:	Metal seated butterfly valve
Working Temp.:	-29℃～425℃
Test / Inspection:	API 598
Face To Face:	ASME B16.10

PS: We also can do according to customer's requirements.




Marking                                 

Every valve in DBV with clear LOGO and Marking on the valve body.

 








Stainless steel Disc                            

Stainless steel ASTM A351 CF8 disc can be used in severe working conditions

 

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Metal to Metal sealing

We protect every tiny detail of the seat sealing,very smoothly
to ensure excellent sealing performance.DBV butterfly valve
adopts all metal forged seal ring,overlays stellite alloy on the 
sealing surface,its advantages are anti-wear,anti-erosion
and long service life,etc.


 






Flange

The top flange design comply with ISO 5211,The yoke is
 convenient for assembling worm gear, pneumatic, electric，
hydraulic and pneumatic & hydraulic actuators.actuators.










Triple Eccentricity Design Features  
 The stem is offset on both the X (1)and Y (2) axis of the valve'scenter line. This produces a cam一like motion.
 The third offset (3)consists of an inclined conical  profile machined into  the  valvesealing  surface. This allows
 rotary engagement and disengagement  of   the   seat   and   seal   ring without interference.  All  rubbing
between  seat  and seal ring is thereby eliminated. Once the seatand seal ring are  fully  engaged  torque 
 is applied in order to create a bi一directional, zero leakage,  metal-to一metal seal. Forthis reason, triple
 offset valves are often defined as "torque" seatedrather than”position” seated as in the case of resilient
 or highperformance products.

 


  Multi-layer disc sealing ring  
 Multi-layer disc sealing ring adopts ss304 and graphite laminated, sealing
by the inside graphite, applied for low and middle pressure, as recycle water,
swage treatment, city building, etc.