Lug type metal to metal renewable seat butterfly valve with special material 5A

Name: Wholly Metal to Metal  Triple Offset Butterfly Valve with Gear Box  Material: Body:5A; Disc: F53, Seat: F53+STL 

Nominal Pressure: CL150 Nominal Diameter: 4"&6" End Connection: Lug Structure: Triple Eccentricity Operation: Worm gear  Valve type: Industrial Valve Working Temp.: -29℃~+315℃ 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.

Clapper

DBV have the best design for the metal to metal renewable seat butterfly valve with the clapper,If something problem with the seat,  we don't need change the whole valves,we can just change the seat.

Flange face finish

Our waterline processing is very precise

Marking

Every valve in DBV with clear and beautiful marking on the valve body,we usually do as our customers requirement

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.