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Intervalve check valve models IVC and IVCT are primarily single
plate swing check valve with a short pattern wafer body conforming
to the API 6D and ANSI B16.10 face to face dimensions. The
valve has a simple but robust construction with reliability.
The low inertia disc design enables the valve to open or close
with a very low differential pressure which make them ideal
for services operating under low differential pressures.
The pressure drop across the valve in fully open condition
is relatively low and makes them ideal for pump discharge
duties. The eccentric disc shaft in combination with the disc
seat guarantees a positive shut off of the returning media.
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| The short face to face dimensions
and low weight allows a simple space saving installation between
the mating companion flanges. The valves are suitable for mounting
between weld neck or slip on type companion flanges of different
standards. The need for flange gaskets during installation is
totally eliminated in the case of IVC model due to the in-built
face sealing 'O' rings provided on the sealing face. Gaskets
are recommended while installing IVCT model valves. |
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Design & face to face dimensions
Valve testing
Flange standard conformity
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API 6D / ANSI B16.10
API 598
ANSI 150, DIN PN 10 & PN 16, BS 10 Table D & E
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1.
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Valve type |
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Self acting non-return valve. |
| 2. |
Description |
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Single plate wafer type swing
check valve. |
| 3. |
Body type |
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Short pattern wafer type |
| 4. |
Disc type |
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With integral hinge pin |
| 5. |
Model nomenclature |
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IVC-check valve with rubber
O-ring seat and face sealing
IVCT-check valve with PTFE seat and serrated contact faces
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| 6. |
Size range |
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25 NB to 600 NB |
| 7. |
Pressure rating |
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PN 16 (max) |
| 8. |
Operating temperature range |
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-250 C to 2000
C (depending on MOC) |
| 9. |
Seat leakage |
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Zero leak / tight shut off |
| 10. |
Standard Material of Construction
(MOC) |
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Body |
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SGI /WCB/ CF8/ CF8M/CS-IS 2062 |
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Disc |
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SGI /WCB/CF8/CF8M |
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Seat |
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EPDM / Viton/ Nitrile/ Neoprene
/ Hypalon - for IVC |
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PTFE or GFT -for IVCT |
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IVC, IVCT CHECK VALVE
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Very low face to face dimensions hence space required
for mounting is less than 10% of that conventional valves.
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Very low weight-total weight is only approximately 1/6
the weight of a conventional check valve.
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Short wafer body enables mounting the valve with shorter
length fasteners of lesser number compared to flanged
swing check valve. Approximately 50% saving in cost of
fasteners.
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Considerable secondary advantages resulting in substantial
savings in handling, packing, transportation, installation
and maintenance.
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Saving in terms of overall length required for piping.
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Tightening torque to be applied on the companion flange
bolting is lower due to face sealing O-rings.
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Practically maintenance free due to fewer number of parts
and simple construction.
- Self centering in pipeline due to controlled outside
diameter, enables easy installation.
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