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The most
sought after design by desalination plants and utility
installations, IVDF represents the state of the art rubber
lined Flanged double valve, meeting all the user industry
requirements.
The double flanged body pattern ensures precise installation
in pipeline, and can be used as an end to the line valve if
required. The unique feature of this valve, is its
adaptability
for lined pipes, due to negligible disc protrusion beyond
the body laying length. The universal square top shaft on
valves upto DN200, enables easy change over from hand lever
operation to actuated operation when required. |
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General design & manufacturing
Valve face to face dimension
Top flange drilling
Valve Inspection & Testing
Flange Standard
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EN 593 / API 609 / IS 13095
Double flanged Short Pattern to EN593 / API 609
IS 13095 / ISO 5752 series-13
ISO 5211
EN 12266 Part 1 / API 598
DIN EN 1092-PN6 / PN10 / PN16 or BS 4504 / Class 150
AW AC 207 Class - B & D |
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1.
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Valve type |
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Centric Disc Rubber lined Flanged end Butterfly valve
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| 2. |
Body type |
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Double Flanged Short |
| 3. |
Seat (liner) type |
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Integrally Bonded with body
ID |
| 4. |
End connection |
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Flanged Ends (Double Flanged) |
| 5. |
Size Range |
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*DN 50 to DN 600 - ASME Class
150 (max) |
| 6. |
Pressure rating |
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* DN 650 to DN 1200-PN10
(max) |
| 7. |
Operating temperature range |
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-250 C to 2000
C (depending on MOC) |
| 8. |
Seat leakage |
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Tight shut off |
| 9. |
Operation |
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Hand Lever for sizes upto
DN200 or Worm Gear,
Pneumatic or Electric Actuators |
| 10. |
Standard Material of Construction
(MOC)
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Valve Body |
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CI / SGI / WCB |
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Disc |
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SGI / WCB / CF8 / CF8M |
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Bonded Seat |
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Nitrile / EDPM / Neoprene
/ Hypalon |
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Drive end & non drive end shaft |
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SS 410 / SS 17.4 PH / SS 316 |
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Bearing |
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Steel+PTFE or SS316+PTFE |
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| * PN16 and below
ratings are as per EN593 |
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PARTS LIST & MATERIAL OF
CONSTRUCTION
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Part. # |
PART DESCRIPTION |
QTY. |
MATERIAL |
PART No. |
PART DESCRIPTION |
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1 |
BODY (BONDED) |
1 |
CI / SGI / WCB |
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1A |
SEAT (BONDED) |
1 |
NITRILE / EPDM / NEOPRENE / HYAPLON |
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2 |
GLACIER BEARING |
3 |
STEEL + PTFE / SS + PTFE |
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3 |
0-RING |
1 |
NITRILE / EDPM |
* |
UPTO 500 NB ONLY |
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4 |
BUSH |
1 |
POLYACETAL |
* |
UPTO 500 NB ONLY |
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4A |
O-RING HOLDER |
1 |
AISI-316 |
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600 NB & ABOVE |
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5 |
O-RING (INNER) |
1 |
NITRILE / EDPM |
* |
600 NB & ABOVE |
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6 |
O-RING (OUTER) |
2 |
NITRILE / EDPM |
* |
600 NB & ABOVE |
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7 |
TOP RETAINER PLATE |
1 |
AISI-316 |
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250 NB & ABOVE |
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8 |
SOC. HD. CAP SCREW |
4 |
AISI-316 |
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250 NB & ABOVE |
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9 |
DISC |
1 |
SGI / WCB / CF8 / CF8M |
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250 NB & ABOVE |
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10 |
TOP SHAFT |
1 |
AISI-410 / 17.4 PH |
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11 |
BOTTOM SHAFT |
1 |
AISI-410 / 17.4 PH |
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12 |
TAPER PIN |
1/2 |
AISI-316 |
* |
250 NB & ABOVE |
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13 |
THRUST BEARING |
1 |
AL. BRONZE |
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14 |
O-RING BOTTOM |
1 |
NITRILE / EPDM |
* |
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15 |
BOTTOM COVER |
1 |
CS / IS2062 Gr. B / AISI-304 |
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15A |
BOTTOM PLUG |
1 |
CA15 / AISI-316 |
* |
UPTO 200 NB ONLY |
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16 |
SOC. HD. CAP SCREW |
4 |
AISI-304 |
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17 |
SOC. HD. GRUB SCREW |
4 |
AISI-304 |
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18 |
PARALLEL KEY |
1 |
EN8 / AISI-410 / MONEL |
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NOTE - MARKED * ARE STD. SPARES |
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Fully rubber lined body, with lining extending upto the
flange contact face to make gasket free sealing.
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Ideal valve for installation with lined pipes, since
the disc chord interference with pipe ID is negligible.
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Controlled compression of the gasket face offers
optimum sealing and prevents gasket face crushing.
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Unique triple sealing system, for shaft sealing to
ensure zero secondary leakage.
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Self lubricated PTFE lined bearings, for both drive end
and non-drive end shafts, ensures minimum bearing
friction.
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Bi-directional tight shut off sealing from vacuum to
rated pressure.
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Excellent adaptability for actuated operation through
standardized ISO top flange.
- Universal top square shaft enabling direct actuator
fitment, after removal of Hand lever, for sizes upto DN200.
- Choice of seat and disc materials to suit media and
operating conditions.
- Enables installation close to other pipe fittings,
without disc interference.
- Preferred design for desalination plants, municipal
water supply and Effluent plants.
- Adjustable bottom thrust pad / bearing for DN250 and
higher to take care of axial thrust loading.
- DN600/DN650 size provided with "O Ring holder" type
drive end shaft sealing arrangement for extra reliability.
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