Triple Offset Butt Welded Butterfly Valves DN900 PN25 with Gear box

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

New design of DBV triple eccentric butterfly valve with large

 material selection,high and low temperature and variety of

 acid,alkali and other coreosive medium.DBV fully metal seated

 butterfly valve can comply with the leakage class A.(Zero Leakage),

we also can produce Bi-direction REAL metal to metal seat butterfly valve

Every valve in DBV with clear typecasting and smooth 

sealing to ensure excellent sealing. Clear the valves

surface and valve bore very carefully in every small details. 

. 

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.

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.

Company Profile:

DBV VALVE CO., LTD is manufacturer of valves.

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Wenzhou Factory :No.96 Fanhua East Road,OuBei,WenZhou,Zhejiang,China,325102

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