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WAFER TYPE BUTTERFLY VALVES

Compact , space saving design , low weight,low maintenance , long service life.
Excellent low control in quarter turn operation.100% light Bidirectional shut off
Stream lined valve disc ensure low pressure drop.lowe torque requirement because of bearing support to the shafts.
Wide range of body , disc , seat material optionssuitable for mounting between all flange standards.
Metal to metal contact valves for high temperature. Application for hot gases. 

PRESSURE RATING : PN10/PN16

PRESSURE TESTING : Body :1.5 x PN

Seat : 1.1 x PN

DESIGN

Wafer  type Butterfly Valve According to ISO 5752 short/ BS 5155 short/ IS 13095

MOUNTING

Valves are suitable for fitment between the flanges drilled as per IS/BS/ANSI/DIN standards

ACTUATION

Valves are fitted with flow control handlever with regulation disc upto 250 mm. Worm gear box for 300mm. Can also be supplied with pneumatic / Electrical Actuators.

FIELDS OF APPLICATION

  • Drinking water
  • Compressed air
  • Sugar factories
  • Pharmaceuticals
  • Milk & food
  • Sea water & brine
  • Water treatment plants
  • Refrigeration & air conditioning (HVAC)
  • Salt water or Chemically treated water
  • Gases and vapours
  • Aggressive chemicals
  • Breweries
  • High vacuum application
  • High frequency operation

DIMENSION CHART

Size L D T X WT/KG
40 33 66 106 185 2.8
50 43 70 113 185 3.5
65 46 76 121 250 4.5
80 46 84 129 250 4.8
100 52 100 147 250 6.0
125 56 112 158 250 7.9
150 56 133 174 315 11.0
200 60 160 198 315 15.5
250 68 198 245 500 27.0
300 78 224 270 500 36.0
350 78 260 321 66
400 100 290 348 90
450 108 320 373 120
500 127 360 410 145
600 149 420 470 170
PartDescription STD MODE OF CONSTRUCTION OPTIONS
1Body Cast iron IS 210 Gr 25 Epoxy Coated SG from GGG 40, Cast steel (WCB), stainless steel CF8/CF8M
2DiscSG Iron GGG40, Epoxy Coated Cast steel (WCB), stainless steel CF8/CF8M
3SeatBlack NitrileEPDM, Neoprene, Viton or as per customer’s requirements.
4Shafts SS410SS304/SS316
5Bearings Self Lubricating Phosphor BronzePTFE
6‘O’ Rings NitrileEPDM, Neoprene, Viton
7BushPolyacetalPTFE
8Taper PinEn 8SS304/SS316
9PlugCarbon SteelSS304/SS316
10Hand LeverSG Iron Epoxy Coated 

Seat

Suitable For

Not suitable 

Temp and  Rage

Nitrile

Water ,Hot water, Animal & vegetable oil & grease bases & acids

Chlorinated Hydrocarbon ester, ether & ketones

-20c to 110c

EPDM

Water, hot water, steam, alcohol

Petrol, diesel, mineral oil & grease

-50c to 120c

Silicon

Hot air, oxygen , animal/ vegetable oil & grease

Steam Exceeding 120c concentrated bases & acids , petrol, diesel etc.

-60c to 180c

Viton

Best Chemical resistant of all elastomers , High Vacuum , Motor fuel, oil, grease.

Hydrofluoric acid, Ammonia Gas

-10c to 160c

Neop rene

Refrigeration Coolant e.g. (ammonia, carbon dioxide freon),alcohol & Glycol

Motor fuel keton, ester ether

-30c to 90c

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