Carbon Steel WCB PN16 Butterfly Valve  

Name:	Cryogenic butterfly valve
Material:	Body:WCB; Disc: WCB, Stem: 13Cr. Seat: SS304+graphite
Nominal Pressure:	PN10
Nominal Diameter:	DN600-800
End Connection:	RF
Structure:	Triple Eccentricity
Operation:	Worm gear
Valve type:	Industrial Valve
Working Temp.:	-100℃~+750℃
Design Standard:	API 609
Test / Inspection:	API 598/ISO 5208
Face To Face:	API 609

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

Up Blow-out Proof Design

Disc fixed on the stem with two pins without Chink to prevent the disc

shaken. DBV butterfly valve adopts such design of stepped shaft with 

the gland. It is effectively that prevent the stem blows out from the top.

One way flow/Single direction

The valve of DBV have beautiful surface with clearly words.

Leakage class:A (No leakage)

Raised Face 

The Rasied Face is the most common type used in process plant applications.

Different types of flange faces are used as the contact surfaces to seat thesealing 

gasket material Including:FF-flat face, RF-raised face, RJ-ring joint and so on.

  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.

  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.

  Factory Overveiw  

Company Profile:

DBV VALVE  CO., LTD is manufacturer of valves.

more detail>

^{Email: [email protected]}  

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

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