Flanged Hard Seal Butterfly Valve Carbon Steel A216 WCB Metallic Seat BFV CL150LB
Quick Details
1. Valve Type: Flanged Hard Seal Butterfly Valve Metallic Seat
2. Standard: API609
3. Pressure rating: Class 150LB
4. Size: 2” - 60"
5. Body materials: Cast Carbon Steel A216 WCB
6. Disc: Carbon Steel, Stainless Steel
7. Stem material: Stainless Steel 13Cr, F304 / F316, 17 -4PH
8. Actuator: Lever, Worm gear, Pneumatic actuator etc
Features
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.
Standards
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
Application
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.
Description
1. Materials List (Triple Offset Butterfly Valve)
| No. | Part Name | Materials |
| 1 | Body | ASTM A216 WCB | ASTM A216 WCB | ASTM A216 WCB |
| 2 | Pin | ASTM A29 1035 / A276 304 | ASTM A29 1035 / A276 304 | ASTM A29 1035 / A276 304 |
| 3 | Stem | 420 | 304 | 316 |
| 4 | Disc | WCB | CF8 | CF8M |
| 5 | Seal Ring | 304/316+Graphife / PTFE | 304/316+Graphife / PTFE | 304/316+Graphife / PTFE |
| 6 | Retainer Flange | A105 | A182 F304 | A182 F316 |
| 7 | Bolt | B7 | B8 | B8M |
| 8 | Bolt | B7 | B7 | B7 |
| 9 | Cover | A105 | A105 | A105 |
| 10 | Gasket | Graphite | Graphite | Graphite |
| 11 | Bushing | Luberized bronze | Luberized bronze | Luberized bronze |
| 12 | Bushing | 304 Nitriding | 304 Nitriding | 304 Nitriding |
| 13 | Packing Seat | A105/304 | A105/304 | A105/304 |
| 14 | Packing | Graphite | Graphite | Graphite |
| 16 | Packing Cover | WCB | WCB | WCB |
| 17 | Nut | A194 2H | A194 2H | A194 2H |
| 18 | Bolt | A193 B7 | A193 B7 | A193 B7 |
| 19 | Yoke | WCB | WCB | WCB |
| Drive Actuator | Handle, Electric actuator, Worm gear, Pheumatic actuaror |
3. Main Connection Dimensions
| Class | Size | L |
| NPS | DN | RF |
| 150Lb | 2 | 50 | 108 |
| 2 1/2 | 65 | 112 |
| 3 | 80 | 114 |
| 4 | 100 | 127 |
| 5 | 125 | 140 |
| 6 | 150 | 140 |
| 8 | 200 | 152 |
| 10 | 250 | 165/203 |
| 12 | 300 | 178/203 |
| 14 | 350 | 190 |
| 16 | 400 | 216 |
| 18 | 450 | 222 |
| 20 | 500 | 229 |
| 24 | 600 | 267 |
| 26 | 650 | 292 |
| 28 | 700 | 292 |
| 30 | 750 | 318 |
| 32 | 800 | 318 |
| 36 | 900 | 330 |
| 38 | 950 | 410 |
| 40 | 1000 | 410 |
| 42 | 1050 | 410 |
| 44 | 1100 | 444 |
| 48 | 1200 | 470 |
| 52 | 1300 | 470 |
| 56 | 1400 | 530 |
| 60 | 1500 | 530 |
Product Tags:
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