Triple offset flanged butterfly valve 18" class 300 with Pneumatic actuator
Body: WCB; Disc: CF8, Stem: A182 F6A. Seat: WCB+STL Seal Ring:CF8+STL
Metal seated butterfly valve
Test / Inspection:
Face To Face:
PS: We also can do according to customer's requirements.
DBV butterfly valve material selection is very large,high
and low temperature and variety of acid,alkali and other
coreosive medium.DBV fully metal seated butterfly valve
can comply with the leakage class A.(Zero Leakage)
Every valve in DBV with clear typecasting and smooth sealing
to ensure excellent sealing. Clear the valves very carefully in
every details and the valve bore
The ASME B16.5 code requires that the flange face
(raised face and flat face) has a specific roughness to
ensure that this surface be compatible with the gasket
and provide a high quality seal
The top flange design comply with ISO 5211,The yoke is
convenient for assembling worm gear, pneumatic, electric,
hydraulic and pneumatic & hydraulic actuators.actuators.
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 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 Technology Parameters
Test Pressure (Mpa)
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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