IVEX-F, IVEX-T & IVEX-M Butterfly Valve

High Performance Butterfly Valve

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 cam 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 range ability. 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 Lloyd’s Register of Shipping & API 607 Edition. V by Bureau Veritas and TUV.

Conformity to Codes & Standards:

General design and manufacturing	API 609 category B
Valve face to face dimensions	ASME B 16.34
Top flange drilling	API 609 category B / ASME B 16.10
Valve inspection and testing	API 598 / FCI-70-2
Flange standard conformity	ASME B 16.5 Class 150
Fire safe testing	API 607 Edition. VI

Technical Specifications:

1	Construction type	Double offset Disc Design High Performance Butterfly valve
2	Valve type & models	IVEX-F – Fire safe seat version IVEX-T – Soft seated PTFE or RPTFE seat version IVEX-M – Metal to metal seated version
3	Body type & end connection	Wafer sandwiched or Wafer lugged
4	Size range	DN 50 to DN 600
5	Seat leakage performance	Bubble tight shutoff for IVEX-F, IVEX-T Class IV for IVEX-M
6	Pressure rating	ASME class 150
7	Operating temperature range	IVEX-F (Depending on MOC) -50⁰ C to 220⁰ C IVEX-T (Depending on MOC) -50⁰ C to 220⁰ C IVEX-M (Depending on MOC) -50⁰ C to 600⁰ C
8	Operation	· Hand-lever for sizes up-to DN 50 to DN 150 · Worm gear boxes for sizes from DN 50 to DN 600 · Pneumatic / Electric actuator operation-optional
9	Standard Material of Construction (MOC) · Valve Body · Valve Disc · Valve Seat · Drive end / non drive end shafts	· WCB / CF8/ CF8M / DUPLEX SS / AL. BRONZE · WCB / CF8/ CF8M / DUPLEX SS / AL. BRONZE · PTFE / Glass filled PTFE · SS 410 / SS 316 SH / 17.4 PH

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.
IVEX-F model fire tested in presence of third party agencies as per latest version of API 607 standard.
Special material of construction available optionally for specific services.

Specifications & dimensions are subject to change without prior notice