Butterfly Valve

Dinesh Tube (India) Butterfly Valves, wafer type with integrally moulded elastomer body sleeve are designed for longer life and trouble free performance. Integrally moulded sleeve ensures perfect resistance against friction between the disc and the sleeve.

Special Features :

• Integrally moulded elastomer liner restricts dislocation of seat and ensures longer life.
•  Flat surface on the disc and the liner at the top and bottom ensures perfect sealing between body, disc and stem.
•  Elastomer body liner is extended deep into the top and bottom of disc shaft passages with integral ‘O’ ring to ensure no working media contacts the body material, thus ensures longer life for body.
•  A primary seal provided at the top end of the body prevents entry of any foreign particles in the Valve, thus ensures longer life for Stem and smooth operation.
•  Valve disc is designed to ensure smooth straight through flow, which reduces pressure drop across the Valve.
•  Close tolerance maintained between the liner, disc and stem reduces operation torque and ensures smooth and easy operation.
•  Integrally moulded liner got integral gasket with it at both ends of the Valve which eliminates requirement of Valve mounting gaskets.
•  Designed and manufactured to conform BS 5155/API 609
•  Suitable to mount between flanges of ANSI B16.5 [150#] or BS-10 Table D/E
•   and Electrical actuated Valves are available on demand.
•  Top platform of the Valve is suitable to mount actuator or manual gearbox directly.
•  Flow Control Lever is provided to facilitate fine control of flow.

Flanged Ends Valves - Three/Two Piece Desing

Matrial of Construction & Presure Temperature Rating

Service Body Material Disc. Material Sleeve Max. Working Pressure Max. Working Temp.
Liquids, Air, Water, Gas, Slurry, Powder, Fly Ash, Sea Water. C.I., S.G Iron C.I., S.G Iron, Nitrile ** 16 bar 90°C
CS, CF-8, CF-8M CF-8, CF-8M      
CN-7M CN-7M      
Steam, Hot Water, Gas, Powder, Slurry of abrasive nature. -do- -do- EPDM** 14 bar 120°C

Test Pressure

Rating Body Seat
PN 10 16 bar 10 bar
Pn 16 24 bar 16 bar

Dimensions in mm

Size N.B. A B C D E F G H
50 43 97 165 65 140 265 185 200
65 46 110 176 70 151 276 185 200
80 46 123 194 78 164 294 230 245
100 52 159 207 96 177 307 230 245
125 56 188 220 113 190 320 230 245
150 56 212 232 126 202 332 325 345
200 60 269 271 157 241 371 325 345
250 68 322 307 190 273 415 390 410
300 78 375 346 216 312 460 390 410

Butterfly Valve - Techanical Specification

 

Size Range
15 NB through
300 NB
Pressure Rating
ANSI/BS
150#, 300#, 600#
Type
3 piece/2 Piece/
1Piece/Fire Safe/
Non Fire Safe
End Connection
Flanged/ Screwed/
Socket Weld
Operation
Wrench/ Manual/ Gear/
Pneumatic
Port Opening
Full/ Regular
Seat
PTFE/ Carbon or Glass
Filled Teflon/ Graphite
Wedge/Disc/Ball
Floating/ Trunnion
mounted
Gasket & Packing
PTFE/ Glass Filled
Teflon/ Graphite
MOC
Refer Material Chart
Design Code
BS – 5351
Testing
API 598
Inspection
3rd Party/ Client/
Manufacturer