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Worm Gear WCB Lug Butterfly Valve  Class 300
  • Worm Gear Class300 WCB Lug Butterfly Valve
  • Indsutrial Valve manufacturer
  • lug flange type triple eccentric Butterfly Valve supplier
  • Lug Butterfly Valve
  • triple offset butterfly valve lug type

Worm Gear WCB Lug Butterfly Valve Class 300

  • Product description:

    Worm Class300 WCB Wafer Butterfly Valve Material: Body: WCB; Disc: WCB, Stem: 13Cr. Seat: SS304+STL,Sealing ring: SS304+STL Nominal Pressure Class 150LB Nominal Diameter: DN300, 12'' End Connection:

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Low temperature LC1 Butterfly Valve 


1g Valve description

lug type valve



Worm gear class300 WCB wafer butterfly valve 


Body:WCB; Disc: CF8, Stem:F6A . Seal: SS304+Graphite

Nominal Pressure:


Nominal Diameter:


End Connection:



Triple Eccentricity


Worm gear 

Valve type:

Industrial Valve

Working Temp.:


Design Standard:

API 609

Test / Inspection:

API 598/ISO 5208

Face To Face:

API 609

 PSWe also can do according to customer's requirements.


2g valve details





Standard Bolts & Nuts 

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

valve longer service life.






Plat pin design



1. Disc fixed on the stem with two pins without Chink to prevent the disc shaken. DBV ball valve adopts the 

2. Prevent the butterfly from jumping





3g why


  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,  Sealingring

sealing by the inside graphite, applied for low and middle pressure,

as recycle water, swage treatment, city building, etc.






  Factory Overveiw  


dbv valve mnaufacturer Contact us


Butterfly Valve Contact

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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