The ultimate in high performance Butterfly valves, IV's IVEX-series incorporates the state of the art valve technology to out perform the competition. The double offset disc design nearly eliminates the seating wear due to the camming action of the disc during closing. The mechanical stopper provided on the valve body ensures precise valve closing every time to ensure specified seat tightness. The disc has a spherical profile and comes out of contact with seat in the initial opening itself.
The valve is available with 3 distinctly different seat design versions, viz. Soft seated, Fire safe and Metal to Metal seated with wafer or wafer lugged body option.
The valve has excellent throttling characteristics with good low flow control capability, which offers an inherently higher rangeability. This feature of IVEX series makes them ideal for the flow control / modulating duties. An adjustable gland box type shaft sealing arrangement permits on line adjustment of the packing to ensure zero leakage.
The fire safe version, IVEX - F model has been fire tested and certified as per the requirements API 607 standard by Lloyds Register of Shipping.
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.
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