PN25 DN800 Carbon Steel Butterfly Valve Butt welded
Body:A105; Disc: CF8, Stem: 13Cr. Seat: Overlay STL
Bare shaft/Worm gear/Electric
Test / Inspection:
Face To Face:
PS: We also can do according to customer's requirements.
Every valve in DBV with clear typecasting.Our big size butterfly
valves also can comply with the leakage class A.(Zero Leakage).
seat ring Stainless steel ASTM A351 CF8,We processing
them with CNC lathe processing center.
Precise processing on the disc sealing to ensure
Metal to metal seats
Metal to metal seats can endure severe flashing, hydraulic
shock, abrasive process fluid, and high temperatures up
to and exceeding 1,000° F. They are also ideal for high
erosion or corrosion applications.
The top flange design comply with ISO 5211,The yoke
is convenient for assembling worm gear, pneumatic, electric,
hydraulic and pneumatic & hydraulic 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
If you like our valves, please bookmark our Facebook,Twitter, which is easier to find us.
If you need it one day in the future, we do appreciate it for your kindness.
Design and Manufacture Standard:
Inspection Test Standard:
Material Pressure-temp. Standard:
Size≤24” according to ANSI B16.5
Face to Face:
Flange Short Pattern to ISO5752 Basic Series 13
Size≥24” according to ANSI B16.47 Series B
Flange Long Pattern to ASME B16.10
Fire Safe Standard:
Testing Pressure at Constant Temp.(MPa)
Design and Manufacture Standard:
Testing Pressure at Constant Temp.（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.
1. Factory Overview
2. Storage and Warehouse
3. Package and Delivery
If you are interested in our products, please click on the following PDF file name to open the Ctrl+S or the right mouse button to save your equipment