On the basis of double eccentric design, the centerline of the disc seal surface and the seat centerline forms angel, and slight move and radial deformation of the seat ring along with the disc, average compression around the seat ring thus achieves complete sealing. The unique triple eccentric design fully applies cam effect in the valve, greatly reduces the friction at the contact area, increases longer service life, achieves easy and convenient operation.
Send InquiryAPI Standard 609 Triple Offset Butterfly Valve
1. FEATURES
Triple eccentric design reduces the friction between disc and seat
Increasing the valve service life
Disc and seat oblique cone design turns the compression seal into torque seal,
achieves bi-directional seals.
Metals and non-metallic compound seal ring combines the rigidity of the metal
The wear-resistance and flexibility of the soft seat, ensures the reliable seat and greater performance.
Low opening torque value
| 2. TECHNICAL SPECIFICATIONS |
|
 Design: API 609, | |
 Flange end: ASME B16.5, ASME B16.47 | |
 Face to face dimension: API 609, MSS SP-68 | |
 Working Pressure: Class 150 ~ Class 900 | |
 Working Temperature: | |
| Seat(SS304, SS316): -73℃～+450℃ | |
| Special Seat: -268℃～+650℃ | |
 Tested according to API 598. | |
| For any other ends, please mark in the order. |
3. MATERIALS
PARTS | MATERIALS |
Body | WCB, LCB, LCC, CF8, CF8M, CF3M, CF3 |
Seal Ring | SS 304, SS 316, S31803+Graphite/PTFE Laminated |
Disc | WCB, LCB, LCC, CF8M, CF8, CF3, CF3M |
Seal Surface | 2Cr13, SS 304, SS 316, Stellite or Integral on body |
Stem | F6A, F304, 17-4PH, F51 |
Bushing | SF-1, SS304 / SS316+PTFE, SS304 / SS316+Nitrided |
Thrust Washer | SS 304+Graphite or PTFE |
Packing | Graphite or PTFE |
OTHER MATERIALS ARE AVAILABLE UPON YOUR REQUEST
4. FLOW FEATURES
