High Performance Butterfly Valve
The ultimate in high performance butterfly valves. The double offset design eliminates seat wear due to the action of the disc during closing. Stops incorporated in the valve body ensure precise closing.
The valve is available as wafer or tapped lug in three different designs, soft seat, fire safe and metal to metal.
The IVEX valve has excellent throttling characteristics with good low flow control capability. This feature makes the IVEX valve ideal for modulating duties.
An adjustable gland ensures zero leakage.
The fire safe version IVEX-F has been tested and certified as per the requirements of API 607 standard by Lloyds Register of Shipping.
Conformity to codes and standards:
Complies with the requirements of European Pressure Equipment Directive PED 97 / 23 / EC
Complies with the requirements of ATEX 94/9/EC
Complies with the requirements of ATEX 94/9/EC
| General design and manufacture: | API 609 Category B |
| Pressure temperature rating: | ANSI B 16.34 |
| Valve face to face dimensions | API 609 Category B / ANSI B16.10 |
| Valve inspection and testing | API 598 / ANSI / FCI 70-2 |
| Flange standard conformity | ANSI 150/300 and PN16/25/40 |
| Fire safe testing: | API 607 |
Technical specifications
| Construction type: | Double offset disc design high performance butterfly valve |
| Valve type & models | IVEX-F Fire safe seat version IVEX-T Soft seated PTFE seat version IVEX-M Metal to metal seated version |
| Body type & end connection | Wafer or wafer lugged |
| Size range | 80 NB to 600 NB |
| Seat leakage | Better than class VI for IVEX-F, IVEX-T Class IV for IVEX-M |
| Operating temperature range: | -50C to 220C for IVEX-T (Depending on MOC) -50C to 220C for IVEX-F (Depending on MOC) -50C to 600C for IVEX-M (Depending on MOC) |
| Operation | Handlever for sizes 80 NB to 150 NB Worm gear box for sizes 80 NB to 600 NB Pneumatic / Electric actuator operation - optional |
| Available material of construction (MOC) | |
| Body/Disc | WCB / LCB / CF8 / CF8M / AB2 / Duplex / Super Duplex (1A-6A) / Alloy 20 / Hastelloy / Austenitic Stainless Steel (6MO) |
| Seat | PTFE / Glass filled PTFE |
| Shaft | AISI 410 / SS 316 SH / 17-4 ph / UNS32760/ Monel |
Dimensions
KEY FEATURES
Double offset disc design with a spherical profile seat eliminates seat wear and ensures perfect sealing every time.
Availability of wafer lugged body with through drilled or threaded holes.
Available in 3 distinctly different seat version viz. PTFE seat, Fire Safe seat and Metal to Metal seated.
Self- lubricated drive end and non-drive end bearings for IVEX T and IVEX-F models and galling free metal bearing for IVEX-M versions.
Stuffing box type gland sealing to enable field adjustment of shaft sealing.
Gland packing standardised on graphoil rings (non-asbestos) to offer widest operating temperature range coupled with excellent media resistance.
Metal seat standardised on Inconel 625 material to offer maximum temperature resistance and minimum seat deformation.
Option of seat material for soft seated version in virgin PTFE or filled PTFE.
Seat removal without disconnecting of shaft and disc.
Split ring type thrust pad provided for the drive end shaft prevents axial movement of the disc as well as ensures the required anti-static feature for the valve.
Availability of wafer lugged body with through drilled or threaded holes.
Available in 3 distinctly different seat version viz. PTFE seat, Fire Safe seat and Metal to Metal seated.
Self- lubricated drive end and non-drive end bearings for IVEX T and IVEX-F models and galling free metal bearing for IVEX-M versions.
Stuffing box type gland sealing to enable field adjustment of shaft sealing.
Gland packing standardised on graphoil rings (non-asbestos) to offer widest operating temperature range coupled with excellent media resistance.
Metal seat standardised on Inconel 625 material to offer maximum temperature resistance and minimum seat deformation.
Option of seat material for soft seated version in virgin PTFE or filled PTFE.
Seat removal without disconnecting of shaft and disc.
Split ring type thrust pad provided for the drive end shaft prevents axial movement of the disc as well as ensures the required anti-static feature for the valve.