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Butterfly Valves



Butterfly Valves
Butterfly Valves

Body

Two piece Design up to 300 mm size & Single piece for sizes above 350 mm, ensuring Max, flow & trouble free replacement of parts.


Disc & Shaft

One piece Investment Cast for sizes up to 100 mm ; & Two piece for sizes 125 mm & above ; Centrically Located to withstand & cope great strain & increased torque.


Seat

Replaceable , completely lining the body throughout the fluid contact part, assuring tightness from both sides of the disc & at the stem passage. Seat is provided with integral "0" Ring thus eliminating the use of gaskets between flanges.


Bearings Bush

Two Lubricated Bearings Bush at the top & bottom ensures low operating torque, making the valves completely maintenance free.


Secondary Sealing

Polyacetal bush with Two "0" rings acts as & bearing, thus further easening opening & closing of valve.


Features

• Valves Suitable for all Applications
• Easy to operate with Lubricated Ferro Bronze/PTFE Bushes
• High Cv values having Low pressure drop
• Wide range selection of Body, Disc & Seat Material
• Integral flange sealing
• zero maintenance
• Compact Design
• Body Lined


Applications

Suitable for Throtting, Regulating on/off service for practically all mediums of flow ; Water, & Chemically treated water, Gases & Vapours, Air, Dust like products, Liquids containing suspended solids, Food, oils, Milk & Food products, Aggressive chemicals, Acids & Crude Oil, & Petrochemical products, Refineries, Fertilisers & Ash handling


Design

P.S. Sleeve lined Wafer Design Butterfly valves Manufactured as per ISO-5752 short & DIN Stds. Valves as per API 609 ; BS-5155, 3952



MANUFACTURING RANGE MM : 25-1000

TEST PRESSURES
Kg / cm2
SIZE MM BODY SEAT PNEUMATIC TEST
25 - 300 15 10 6.5
350 - 600 14 6 -
650 - 1000 10 5 -

Mounting

Suitable for fitment between flanges as per IS-1538, BS, ANSI B-16.5 ; Class 150 ibs, DIN PN 10/16 ; API or any other std.


MATERIAL OF CONSTRUCTION

Body & Disc

Graded CI, CS, CF8, CF8M ; Alloy 20 ; Low Carbon Steel


Seat

EPDM; Nitrile; Food graded EPDM; Neoprene; Silicon; Viton, & PTFE.


Coating / Lining

Epoxy Rubber & PVDF (Teflon) lining.


Actuation

Hand lever for ON / OFF; Notch Disc with lever for Throttling, Worm gears, Pneumatic Actuators both rotary & linear, single & double acting & Electric actuators. Complete system with solenoid valves, limit switches, positioners with Control panel can be tailormade.


DN A B C D H J
Min
TOP MOUNTING FLANGES P Q
Max
Bare
Wt. Kgs.
LxW H1 H2
PCD N d
25 71 56 10 28 25 265 43 4 7 - - 1.5 130x78 78 205
40 91 56 10 32 25 265 43 4 7 - - 2.5 130x78 78 345
50 106 101 14 42 30 265 82 4 9 220 285 3.8 130x78 78 345
65 116 101 14 47 30 265 82 4 9 220 285 4.8 188x108 160 415
80 141 101 14 47 30 265 82 4 9 220 285 6.0 188x108 160 430
100 162 101 16 53 30 265 82 4 9 220 285 6.5 188x108 160 430
125 192 101 19 57 30 265 82 4 9 220 285 8.0 188x108 160 480
150 218 101 19 57 30 265 82 4 9 220 285 10.5 276x157 162 570
200 271 150 22 59 39 300 125 4 13 220 285 19 276x157 162 630
250 328 150 30 69 39 400 125 4 13 315 335 23 356x214 222 745
300 375 150 30 79 39 400 125 4 13 315 335 46 356x214 222 860
350 438 150 30 79 50   125 4 17 365 465 56 356x214 222 895
400 481 150 40 101 60   125 4 17 365 465 85 400x276 285 1060
450 542 201 50 114 60   165 4 22 365 465 95 400x276 285 1225
500 598 201 50 127 60   165 4 22 450 465 140 551x355 355 1300
600 712 309 60 149 90   254 8 22 525 475 180 - - -
700 834 309 60 170 90   254 8 22 - - - - - -
750 880 329 60 170 90   254 8 22 - - - - - -
800 945 320 75 189 120   254 8 22 - - - - - -
900 1040 329 75 205 120   298 8 22 - - - - - -
1000 1180 389 120 216 153   298 8 22 - - - - - -