Triple eccentric/Offset metal to metal seat wafer Butterfly Valves DN250 PN16

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

Marking                                 

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

Casting of Disc                            

We choose the best raw material supplier of Stainless steel ASTM A351 CF8

Metal to Metal sealing

We protect every tiny detail of the seat sealing,very smoothly

to ensure excellent sealing performance.DBV butterfty 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 face finish

The ASME B16.5 code requires that the flange

face(raised face and flat face)has a specific

roughness to ensure that this surface be compatible

with the gasket and provide a high quality seal.

  Triple Eccentricity Design Features  

 The stem is offset on both the X (1)and Y (2) axis of the valve's

center line. This produces a cam一like motion. The third offset (3)

consists of an inclined conical  profile machined into  the  valve

sealing  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 seat

and seal ring are  fully  engaged  torque  is applied in order to 

create a bi一directional, zero leakage,  metal-to一metal seal. For

this reason, triple offset valves are often defined as "torque" seated

rather than”position” seated as in the case of resilient or high performance products.

  Metal to Metal Design  

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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