GO DI QT450 Flange Triple Eccentric Butterfly Valve
Body:QT450; Disc: QT450, Stem: SS410. Seat: Overlay 13Cr.
Test / Inspection:
API 598/ISO 5208
Face To Face:
PS: We also can make according to customer's requirements.
DBV butterfly valve adopts the design of top flange yoke as standard ISO5211.
It is more beautiful, and also convenient to assemble the actuator.
Multilayer-304+graphite Sandwich 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, swagetreatment, city building, etc.
Turtle Back Disc Design
DBV butterfly valve adopts the design of turtle back disc, not only strengthening the disc to be more
strong, but also making it looks very beautiful.
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. DBV multi-layers are all stainless steel 304+graphite or 316+graphite or better material.
DBV VALVE CO., LTD is manufacturer of valves.
Email: [email protected]
Wenzhou Factory :No.96 Fanhua East Road,OuBei,WenZhou,Zhejiang,China,325102
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Main Performance Parameters for ASME Standard
Flange Connection Dimension
Size≤24”according to ANSI B16.5 Size≥24”according to ANSI B16.47 Series B
Test and Inspection
Temperature and Pressure Level
Face to Face
API 609 ISO 5752 basic series 13
Test Pressure at Room Temp.
Water, Oil, Gas and Other Corrosive Media (Different Media Use Different Materials)
-46℃~550℃ (Different Temp. Conditions Use Different Materials)
Main Performance Parameters for DIN Standard
According to GB/T13927-92
Water, Air, Oil, Gas, Steam, and Corrosive Media
PS: We also can do according to customer's requirements.
1. DBV butterfly valve is characterized by simple structure, small volume and light weight, and it is easy to install and adjust.
The valve is widely used in the medium and low pressure pipeline.
2. Good sealing performance，corrosion resistance，high pressure and temperature resistance, smart control and safe use.
3. The unique design of triple eccentricity makes no friction between the sealing surface and extend the valve service life.
4. The elastic seal is produced by the torque.
5. The wedge design makes the valve close more and more tightly by automatic sealing function, and there’s compensation
and zero leakage between the sealing surfaces.
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