CONCENTRIC BUTTERFLY VALVES

concentric-valve-img Advance Butterfly Valve are designed & manufactured to have optimum mix of structural stability, flow efficiency & effective seating coupled with advantage of light weight, compact design and ease of operation. Only a quarter turn is needed to fully open or close the valves.
The salient features include :-
  • Fit n Forget’ Butterfly Valve – internally molded liner
  • 2″ to 24″
  • Upto ANSI # 150
  • From – 50° to 205° C
  • End connection in Wafer, Lugged & Flanged Models
  • Lining and metallurgy to suit a wide variety of applications, including sea water & water desalination plants
  • Seal type (EPDM, Buna N, Viton)
  • Standard compliance with API 609 & 598

Design Features Construction Features Facilities (operators) Application | Installation Dimensions

Design Features

The valves are designed and manufactured to have optimal mix of structural stability, flow efficiency and effective seating coupled with advantage of light weight, compact design and ease of operation.

The valves are provided with integrally moulded elastomer body liner for perfect seating and complete isolation of body material from fluid media. No gaskets are required as the body liner effects a perfect seal between the valve body and the mating pipe flanges.

The valves are designed using Finite Element Methods.

Advance Butterfly Valves conform to BS:5155, IS:13095 and also API 609. It also generally complies with AWWA C-504, International standard ISO 10631 and draft European standard pr EN 593.

Construction Features

Body is one piece design. Top Flange is designed to mount required Valve Operator.

Body Liner is integrally moulded and bonded to the body. It provides the seating to valve disc, primary seal to the stem and ‘gasket’ joint with mating pipe flanges. Integrally moulded liner resists any stretching or distortion of the liner which is a common problem of loosely fitted liner leading to frequent replacements.concentric-valve-detail_clip_image002

Valve Disc material covers wide range of applications. It is optimally designed to have an ideal combination of strength and flow efficiency.

Stem

For optimal combination of flow efficiency and structural stability, Valves upto 200mm (8″) have two piece stem. For sizes 250mm (10″) to 600mm (24″) N.B. stem is in single piece construction which ensures better distribution of weight of the disc. The stem drives the disc through taper pin(s) to eliminate any backlash between Stem & Disc. The material of construction for stem has been standardised as High Tensile Stainless steel (AISI 410).

Stem Seal Arrangement

Primary Sealing is provided by preloaded contact between flat seat surface and rounded polished disc hub area.

Secondary Sealing is provided by the interference fit bconcentric-valve-detail_clip_image002_0000etween stem and stem hole in seat at all positions.

Even a tertiary sealing has been provided by fitting moulded O-ring between stem and bush supported by atmospheric sealing with O-rings. Thus Advance Butterfly Valves provide perfect sealing needing no other gland packing

End Connections

Wafer type flanges are as per BS 4504 PN 10 & 16, BS 1560 classes 125 & 150, ANSI B 16.5 Class 150, ANSI B 16.1 Class 125, BS 10 Table D, E & F and Indian Standard IS 6392 Table 10 to 20. Lug type valves are supplied to suit customers specifications.

Facilities

Technology Advantages

Rubber technology is fully developed in-house with facilities to mould, process all elastomers including mixing, vulcanizing and metal to elastomers bonding. The integral liner concept is a fail safe design.

Tests Offered

Extensive in-house testing facilities are available to fully ensure quality at all stages. These include :

  • Elastomer Test for Tension, Compression set, Hardness, Specific Gravity, Adhesion & Abrasion Resistance.
  • Dye Penetrant Test
  • Tests of Actuators (both electric & pneumatic type)
  • Hydrostatic Pressure Testing for shell & seat
  • Pneumatic Testing for seat
  • Valve operating torque test. Facilities for Pressure Drop test and Life cycle test exist for valid for upto 500 mm (20″) NB.

Apart from above, other NDT processes including MPI & Ultrasonic Test and tests for chemical & physical properties including special tests e.g. low temperature impact Test, Inter-granular Corrosion Test etc. are also offered to meet customers requirement through independent Approved Inspection and Test Laboratories.

Valve Testing:(Hydrostatic)

Each valve is hydrostatically tested for seat & shell tests as per applicable standards.

Additional tests as required can be carried out as per customer’s specification and requirement.

Application

The valves are available for all flluid service requirements with suitable body liner, disc material combinations for upto 210o deg.C in PN6, PN 10, PN 16, ANSI 125 & 150 rating.

  • General Industry.
  • Oil & gas production processing.
  • Metallurgy.
  • Water Supply & Management systems.
  • Power plants.
  • Sea water applications.
  • Chemicals & Petrochemicals.
  • Air & Gas Services.

Though R & D efforts, improvement & optimization of design is an ongoing process. The design/specifications provided here are subject to change accordingly.

Installation Dimensions

  concentric-valve-detail_clip_image002_0001  concentric-valve-detail_clip_image002_0002

 

VALVE SIZE (N.B.) A B C D E F G H J Approx. Gr. Wt. Kg.
  50  (2″) 113 68 43 97 250 3.5
  65  (21/2″) 121 74 46 110 250 4.0
  80  (3″) 128 81 46 129 250 4.5
  100  (4″) 146 96 52 161 250 6.2
  125  (5″) 158 114 56 188 250 7.7
  1500  (6″) 174 132 56 212 250 9.0
  200  (8″) 198 165 60 269 250 14.0
  250  (10″) 245 215 68 320 300 175 61 283 30.0
  300  (12″) 275 240 78 370 300 175 61 313 44.0
  350  (14″) 305 265 92 436 300 175 61 343 50.0
  400  (16″) 335 295 102 487 450 265 117 408 72.0
  450  (18″) 386 325 114 539 450 265 117 459 95.0
  500  (20″) 416 360 127 592 450 265 117 489 120.0
  600  (24″) 506 435 154 695 450 265 117 579 210.0

 

( MODEL-11 )
SIZE IN MM SIZE IN INCHES A B C D E
50MM 2 113 68 43 96 26
65MM 2.5 121 74 46 110 46
80MM 3 128 81 46 128 65
100MM 4 146 96 52 159 86
125MM 5 158 114 56 188 112
150MM 6 174 132 56 212 139
200MM 8 198 165 60 269 191
250MM 10 244 215 68 321 241
300MM 12 275 240 78 371 290
350MM 14 371 265 78 436 324
400MM 16 390 295 102 487 367
450MM 18 425 325 114 539 413
500MM 20 451 360 127 592 460
550MM 22 481 408 154 645 476
600MM 24 510 435 154 694 553

 

( MODEL-21 )
SIZE IN MM SIZE IN INCHES A B C D E
50MM 2 113 68 43 165 26
65MM 2.5 121 74 46 185 46
80MM 3 128 81 46 200 65
100MM 4 146 96 52 229 86
125MM 5 158 114 56 254 112
150MM 6 174 132 56 285 139
200MM 8 198 165 60 343 191
250MM 10 244 215 68 406 241
300MM 12 275 240 78 480 290
350MM 14 371 265 78 533 324
400MM 16 390 295 102 597 367
450MM 18 425 325 114 635 413
500MM 20 451 360 127 715 460
550MM 22 481 408 154 762 476
600MM 24 510 435 154 840 553

concentric-valves31

DOUBLE FLANGE ( MODEL – 31 )
SIZE DIMENSION [mm]
[in] [mm] A B C D E T (MIN) DIA F G VALVE ESTIMATED WEIGHT [Kg]
3 80 128 81 114 190 0 24 250 212 12
4 100 146 95 127 230 0 24 250 212 16
6 150 174 132 140 280 57 26 250 212 23
8 200 198 179 152 345 132 29 350 240 37
10 250 244 232 165 405 190 31 350 240 54
12 300 275 257 178 485 244 33 425 226 80
14 350 371 282 190 535 276 36 600 320 105
16 400 390 315 216 595 316 37 450 312 146
18 450 425 347 222 635 368 40 600 312 173
20 500 451 382 229 700 421 43 600 337 206
24 600 510 460 267 815 511 48 600 337 323
* AS STANDARD PRACTICE VALVES ARE SUPPLIED HAND LEVER UPTO 150 MM (6″) AND GEAR BOX ABOVE THAT SIZEGEAR BOX/ACTUATORS(ELECTRIC/PNEUMATIC) CAN BE SUPPLIED AS PER CUSTOMER’S SPECIFICATION FOR ALL SIZES