Product description:
Triple Offset Butterfly Valves Body Material:Q245R Disc: WCB, Stem: A182 F6A. Seat: SS304+Graphite Nominal Diameter:DN1800 Nominal Pressure:PN6 Welded Ends
Triple Offset Butterfly Valve DN1800 PN6
| Name: |
Triple offset BW butterfly valve DN1800 PN6 Gear box operated |
| Material: |
Body: Q245R; Disc: WCB, Stem:A182 F6A. Seat: SS304+Graphite |
| Nominal Pressure: |
PN6 |
| Nominal Diameter: |
DN1800 |
| End Connection: |
Butt welded |
| Structure: |
Triple Eccentric |
| Operation: |
Bare shaft |
| Valve type: |
Metal seated butterfly valve |
| Working Temp.: |
-29℃~+425℃ |
| Test / Inspection: |
API 598 |
| Face To Face: |
API 609 |
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).
Fixed pin to prevent disc from loosening,in this way to ensure stable sealing
.
Accurate processing the disc to ensure excellent sealing.
Many big size disc we also have them in stock to ensure
short delivery time
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'scenter line. This produces a cam一like motion.
The third offset (3)consists of an inclined conical profile machined into the valvesealing 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 seatand seal ring are fully engaged torque
is applied in order to create a bi一directional, zero leakage, metal-to一metal seal. Forthis reason, triple
offset valves are often defined as "torque" seatedrather than”position” seated as in the case of resilient
or highperformance 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.
