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   Valves / Butterfly Valves

 


  

Wafer type butterfly valve with an integrally bonded elastomer liner. Requiring absolutely no form of maintenance is a perfect "Fit and forget"valve. Available with either a flangeless or lugged body,in a size range of 50-600 mm,a pressure rating of up to PN 16 and offered with latching lever or actuation as well as different combination of disc and seat materials, "UNIMAC" is a truly versatile valve.

Features

Benifts

Integrally bonded body seat Easy And Trouble free mounting in the pipeline. No maintenance. No tearing and distortion of liner. Exceptionally long seat life. Uniform sealing. Suitable for vacuum and high flow applications.
Stainless steel fully machined shaft(Optional) PTFE coated Permanent dry lubrication. Ease of operation. Prevents corrosion on shaft.
Primary and secondary seals integral with body lining Ensures compatibility with media
Different disc and seat combination available Suitable for a wide range of applications.
Weather seal feature Atmospheric sealing to valve internals.
Spherical machined and polished disc(optional) Ensures longer seat life, easier operation and tight shut-off.
     
Applications

General Applications

Continuous Working Temperature Range

Maximun Working Pressure

Disc Material

Seat Material

Oils, fuels, water, air, gases, powders, pellets, slurries etc Hydrocarbons (Except aromatics)- 10C to 90C Other Liquids - 10C to 80C Dry Services - 10C to 60C 16 bar Epoxy coated SG iron   Black Nitrile
Brines, sea water, estuary water, marine bilge and ballast systems Liquids - 10C to 80C 16 bar Aluminium Bronze  
Steam, water, hot gases, powders, slurries and aqueous slurries of an abrasive nature Liquids - 10C to 120C Dry services - 10C to 100C 16 bar Stainless steel Periphery Polished General Purpose EPDM
 
 
 

Additional Feature

  • O ring is provided to reduce the actuator torque and atmospheric sealing of the valve interior.
  • It is provide for up to 600 mm dia.
  • Long extended Neck for insulation purpose on request.
  • Detachable hand lever to stop misuse of valve
  • Special material combination as per buyers' request.
     
Valve size mm
(Inches)
50
(2)
65
(2.5)
80
(3)
100
(4)
125
(5)
150 (6)
200 (8)
250 (10)
300 (12)
350 (14)
400 (16)
450 (18)
500 (20)
600 (24)
B
43.5
45.5
45.5
53
56.5
56.5
61
68.5
79
79
103
115
128
155
C
140
153
160
178
194
203
239
271
310
318
370
410
440
500
E - Flow control lever       Standard gear unit
      Heavy duty gear unit  
180 427
-
193
440
-
200 447
-
218 465
-
234 481
-
243 490
-
306 409 455
338 441 488
377
-
527
-
-
535
-
- 587
-
-
790
-
-
820
-
-
880
F
65
78
85
105
118
144
169
237
272
342
377
447
477
547
H - Wafer flangeless        Wafer lugged
103 121
110 135
130 180
161 208
193 238
220 261
273 322
328 394
378 462
438 531
489 598
532 644
580 710
685 836
N - Flow control lever       Standard gear unit
      Heavy duty gear unit
311 152
-
311
152
-
311 152
-
311 152
-
311 152
-
311 152
-
619 267 375
619 267 375
619
-
375
-
-
375
-
- 375
-
-
552
-
-
552
-
-
552
U - Flow control lever       Standard gear unit
      Heavy duty gear unit
268
76
-
268
76
-
268 76
-
268
76
-
268
76
-
268 76
-
508 187 255
508 187 255
508
-
255
-
-
255
-
- 255
-
-
437
-
-
437
-
-
437
ZN
27
47
63
83
107
136
185
234
280
328
377
424
476
573
ZF - Hand wheel Dia.         Standard gear unit
        Heavy duty gear unit
4
152
-
10
152
-
16
152
-
23
152
-
32
152
-
45
152
-
67
250 300
88
250 300
106
-
300
130
-
300
144
-
300
163
-
578
183
-
578
220
-
578
     

Material Specification

Part

Material of Construction

Body

Cast Iron to BS 1452 Gr 220

SG Iron to BS 2789 Gr 420/12
Stainless steel ; ICCF8 /ICCF8M

C/S to ASTM A216 Gr WCB

Body liner

Black Nitrile

EPDM/ NEOPRENE /PTFE

Disc

SG Iron to BS 2789 Gr 420/12 with EPOXY coating

AI. Bronze to BS 1400 Gr AB2/AB1

S/S to ASTM A351 Gr CF8/CF8M edge polished

Shaft

Fully machined SS 410 / SS304 / SS316

Bearing

 

Matching O ring as required

Standard flow control lever

MS Powder coated Iron to BS 2789 Gr 420/12

 

Torque Data - Nm*

Valve Size(mm)

Linepressure (bar)

14

16

50

11.5

12.5

65

16.5

19.5

80

24.5

27.5

100

35.5

40.5

125

54.5

61.5

150

82

94

200

160.5

182.5

250

245

280

300

280

319

350

452.5

514.5

400

814

926

450

1048

1193

500

1326

1507

600

2663

3030
 

Operation

Valve Type

Size Range(mm)

Flow Control Lever

50 to 300

Standard Gear Unit

50 to 250

Heavy Duty Gear Unit

200 to 600

 

Pressure Rating

Seat

Rating

Test Pressures(bar)

 

Body/Disc

Seat

Black Nitrile/EPDM

16

24

17.6
 

Standards

 

Size(mm)

Standards

Face to Face

50 to 300

BS 5155 - Wafer Short
API 609 - Category A
MSS SP 67 - Narrow Body
ISO 5752 - Short
IS 13095

350 to 600

BS 5155 - Wafer Medium
PI 609 - Category A(Except DN 350)
MSS SP 67 - Wide Body
ISO 5752 - Medium
IS 13095

Valve Design

BS 5155/IS 13095 - Specification for Butterfly Valves

API 609 - Lug and Wafer type Butterfly Valves

MSS SP 67 - Butterfly Valves

ISO - Metal valves for use in flanged pipe system. Face to face and centre to face dimensions

 
Flanges

 The valves are of short pattern type and have been designed to fit between flanges without gaskets drilled to BS 10 Tables 'D','E',and 'F',ANSI 125/150, DIN PN 10/16, BS 4504(PN 10/16), Tables 6 yo 9 of IS : 6418, Table 10 to 20 of IS : 6392 and Tables 4 to 6 of IS : 1538

Accessories

UNIMAC butterfly valves can be supplied with factory fitted pneumatic, hydraulic or electric actuators along with other accessories such as limit switches, manual overrides, positioners etc. to form a complete flow control package. Heavy duty gear unit are supplied for valves to be fitted with electric actuators.

Installation, Operating and Maintenance instructions for the are available on request.
     
Note : Due to constant upgradation designs & dimensions are subject to change wihtout notice.

 

 


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