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|Body Material:||Cast Steel A216 WCB||Trim:||13Cr|
|Size:||40In / Dn1000||Pressure Rating:||Class 150LB|
|Actuator:||Manual, Gear Operated||Connection Ends:||Wafer Type|
|Body Structure:||High Performance, Three - Eccentric||Other:||OEM Available|
A216 WCB Wafer Metal Seated Butterfly Valve with Counter Flanges 40In Dn1000 CL150LB
1. Valve Type: Wafer Metal Seated Butterfly Valve with Counter Flanges
2. Standard: API609
3. Pressure rating: Class 150LB
4. Size: 40" / Dn1000
5. Body materials: Carbon steel A216 WCB
6. Disc: Carbon Steel (WCB)
7. Stem material: Stainless Steel 13Cr
8. Actuator: Manual, Worm gear
9. Design: Triple Offset, High Performance
10. Assembled with Counter Flanges and Bolt &Nuts
1. The Seal Principle of Hard Seal Butterfly Valve Triple Offset
The Triple Offset Butterfly Valve provides a bi-directional bubble tight shut-off.This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure auniform seal contact.
2. The Triple Offset Geometry
OFFSET 1 The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat
OFFSET2 The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve
0FFSET3 The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.
3. Friction Free Sealing for Long Cycle Life
(1) Seat is Cr13 Metal alloy or hardfaced with Stellite as standard.
(2) The gasket is spiral wound SS/Graphite for zero leakage.
(3) Seat ring forces are generated by the torque during closing uniformly around the entire circumference. The resilient seal fleses and energizes, assuming the shape of the seat. The compression forces equally distributed around the perimeter provide a tight bi-directional shut off.
The resiliency of the seal allows the valve body and disc to contract or expand, without the risk of jamming due to temperature fluctuations. It is self-adjusting.
Hard Seal (Metal Seated)Butterfly Valve triple offset series are used in such fields as metallurgy, light industry, electric power, petrochemistry, coal gas channel etc.
Design and Manufacture； API 609. MSS SP-67, MSS SP-68
Inspection and Test: API S98
End flange dimension: ASME B16 5 (NPS≤24). ASME B16 47 B series
Face to face and end to end； API 609
Pressure-temperature ratings: ASMF B16.34
1. Materials List (Wafer Triple Offset Butterfly Valve 40in Class 150LB)
|1||Body||ASTM A216 WCB|
|2||Pin||ASTM A29 1035 / A276 304|
|5||Seal Ring||304 / 316+Graphife / PTFE|
|Drive Actuator||Manual, Worm gear|
|Counter Flanges WN||A105|
2. Main Connection Dimensions for Wafer Butterfly Valve with Counter Flanges