WCB PN16 TRIPLE ECCENTRIC BUTTERFLY VALVE 

Name:	WCB Triple eccentric butterfly valve
Material:	Body:WCB; Disc: WCB, Stem: 13Cr. Seat: SS304+graphite
Nominal Pressure:	PN16
Nominal Diameter:	DN500
End Connection:	RF
Structure:	Triple Eccentricity
Operation:	Worm gear
Valve type:	Industrial Valve
Working Temp.:	-29℃~+425℃
Design Standard:	API 609
Test / Inspection:	API 598/ISO 5208
NACE:	NACE0175

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

Plat pin design

DBV butterfly valve adopts the design of  multi-layer disc sealing ring, sealing by the inside graphite, applied

for low and middle pressure, as recycle water, swage treatment, city building, etc.

RTJ Sealing Surface for Flange Connection

DBV butterfly valve adopts the design of  multi-layer disc sealing ring, sealing by the inside graphite, applied

for low and middle pressure, asrecycle water, swage treatment, city building, etc.

Standard Bolts & Nuts  

DBV ball valve adopts the standard bolts and nuts. It could extend the valve longer sevice life

  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.

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^{Email: [email protected]}  

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

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