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 Lloyd's Register of Shipping & API 607 Edn. V
by Bureau Veritas and TUV.
General design and manufacturing
Pressure temperature rating
Valve face to face dimensions
Valve inspection and testing
Flange standard
Fire safe testing
:
:
:
:
:
:
API 609 category B
ASME B 16.34
API 609 category B / ASME B 16.10
API 598 / FCI-70-2
ASME B 16.5 Class 150
API 607 Edn. VI
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
:
Handlever for sizes DN 50 to DN 150
Worm gear box for sizes DN 50 to DN 600
Pneumatic / Electric actuator operation - optional
9.
Standard Material of
Construction (MOC)
Valve Body
:
WCB / CF8/ CF8M /
DUPLEX SS / AL. BRONZE
Disc
:
WCB / CF8/ CF8M /
DUPLEX SS / AL. BRONZE
Valve Seat
:
PTFE / Glass filled PTFE
Drive end / non drive
end shafts
:
SS 410 / SS 316 SH /
17.4 PH
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
Handlever for sizes DN 50 to DN 150
