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COUPLINGS STRUCTURE & SUPPORTS COUPLINGS

Column Components | Couplings | Glass Joint | Heat Exchangers | Measurement & Control | Pipeline Components | Rotary Film Evaporator | Sight Glasses | Stirrers | Structure & Supports | Typical Units | Valves | Vessels



The coupling used with glass equipment are important from two main points of view :

- They must ensure the effective seal of the joint.

- They should not induce any undue stress in the glass.

- They must be reliable in all service conditions.

In this section we have covered couplings to join glass components together as well as to join glass component with a other metal equipment.

PTFE bellows are available for normal and vacuum applications together with flanges to connect them to glass or non-glass equipment.

STRUCTURE & SUPPORTS

Glass plants are normally supported in a tubular structure formed of glavanised steel tubes. This type of structure is proven robust and flexible over many years.

COMPLETE COUPLINGS

A complete coupling is a set of two backing flanges with insert and nut-bolts. It a complete set of flanges require to make a joint.

Cat.Ref.
DN
Flanges
Inserts
Nuts-Bolts
Cat.Ref.
Qty
Cat.Ref.
Qty
d
L
Qty
CT1*
25
CF1
2nos
CN1
2nos
5/16"
65
3nos
CT1.5*
40
CF1.5
2nos
CN1.5
2nos
5/16"
65
3nos
CT2*
50
CF2
2nos
CN2
2nos
5/16"
75
3nos
CT3*
80
CF3
2nos
CN3
2nos
5/16"
75
6nos
CT4*
100
CF4
2nos
CN4
2nos
5/16"
100
6nos
CT6*
150
CF6
2nos
CN6
2nos
5/16"
100
6nos
CT9*
225
CF9
2nos
CN9
2nos
3/8"
125
8nos
CT12*
300
CF12
2nos
CN12
2nos
3/8"
150
12nos
CT16
400
CF16
2nos
CN16
2nos
3/8"
150
12nos
CT18*
450
CF18
2nos
CN18
2nos
1/2"
150
12nos
CT24
600
CF24
2nos
CN24
2nos
1/2"
150
12nos


BACKING FLANGES

Backing flanges are used to couple a glass ends to a glass end or to a bellow. Backing flanges are made of Cast iron and are used with Inserts.

Cat.Ref.
DN
D
D1
D2
PCD
n x do
L
L1
Type
CF1
25
92
43
51
70
3 x 9ø
10
6
A
CF1.5
40
110
58
66
86
3 x 9ø
10
6
A
CF2
50
120
70
81
98
3 x 9ø
12
8
A
CF3
80
155
101
112
133
6 x 9ø
12
8
A
CF4
100
200
134
148
178
6 x 9ø
12
8
A
CF6
150
275
186
196
254
6 x 9ø
15
8
A
CF9
225
350
260
282
310
8 x 11ø
28
8
B
CF12
300
425
342
363
395
12 x 11ø
34
8
B
CF16
400
525
467
476
495
12 x 12ø
22
8
A
CF18
450
630
573
557
585
12 x 14ø
37
8
B
CF24
600
755
643
690
710
12 x 14ø
50
5
C


INSERTS

Split ring type inserts are used with backing flanges. These are made of Cast iron with asbestos lining. New inserts made of suitable composite rubber material are being introduced and are presently supplied for 25 and 150DN size.


Cat.Ref.
DN
D
D1
L
Type
CA
25
50
34
20
A
CA
40
65
48
10
A
CA
50
80
61
8
B
CA
80
111
90
9
B
CA
100
147
119
10
B
CA
150
195
168
10
B
CA
225
280
240
10
B
CA
300
361
324
10
B
CA
400
474
431
12
B
CA
450
555
500
18
B
CA
600
684
634
10
C


ACAPTOR BACKING FLANGES

Adaptor backing flanges are used to couple a glass end to the flange having different bolt configuration. These flanges are made of cast iron and are supplied with inserts.

These are particularly used to fit a glass equipment on a non-glass equipment like Glass-lined Reactor etc.

Adaptor backing flanges are generally supplied undrilled. However. If specified, these can be supplied drilled as per "Table E", Table F" and "ASA 150" standards.

Undrilling flanges


Cat. Ref.
DN
D
D1
D2
L
CFA1
25
115
43
51
10
CFA1.5
40
150
58
66
10
CFA2
50
165
70
81
12
CFA3
80
200
101
112
12
CFA4
100
220
134
148
12
CFA6
150
285
186
196
15
CFA9
225
395
260
282
15
CFA12
300
445
342
363
18

 

Drilled to Table E

Cat.Ref.
PCD
n x do
CFA/E
82
4 x 12ø
CFA1.5/E
98
4 x 12ø
CFA2/E
114
4 x 16ø
CFA3/E
146
4 x 16ø
CFA4/E
178
8 x 16ø
CFA6/E
235
8 x 19ø
CFA9/E
324
12 x 19ø
CFA12/E
406
12 x 23ø

 

Drilled to Table F


Cat.Ref.
PCD
n x do
CFA1/F
87
4 x 16ø
CFA1.5/F
105
4 x 16ø
CFA2/F
127
4 x 16ø
CFA3/F
165
4 x 16ø
CFA4/F
190
8 x 16ø
CFA6/F
260
12 x 19ø
CFA9/F
356
12 x 23ø
CFA12/F
438
16 x 23ø

 

Drilled to ASA 150

Cat.Ref.
PCD
n x do
CFA/A
79
4 x 12ø
CFA1.5/A
98
4 x 12ø
CFA2/A
121
4 x 12ø
CFA3/A
152
4 x 16ø
CFA4/A
190
8 x 16ø
CFA6/A
241
8 x 19ø
CFA9/A
298
8 x 19ø
CFA12/A
432
12 x 23ø

 

PTFE "O" RING WITH LOCKING COLLAR

These PTFE O ring are specially made to use as gaskets in glass fittings. These are provided with a collar which helps to locate it on the glass end correctly.

Cat.Ref.
DN
D
D1
d
L
TR1*
25
42
33
3
5
TR1.5*
40
57
48
3
5
TR2*
50
70
59
3
5
TR3*
80
100
88
3
5
TR4*
100
134
119
4
6
TR6*
150
186
168
4
6
TR9*
225
260
236
4
7
TR12*
300
342
318
4
7
TR16*
400
467
435
6
7
TR18*
450
537
490
6
7
TR24*
600
686
640
8
10

PIFE BELLOWS GLASS TO GLASS

These bellow are used in installation of glass equipment for following purpose :

  • to provide safe branching of pipelines from the main glass equipment.
  • to accommodate odd degrees and variation in length.

Bellows are supplied along with required bellow flanges and nut-bolts. Distance-locking bolts are provided to avoid excessive compression or contraction of the bellow. Gaskets are not required where bellows are used. For drilling details, refer "Bellow flanges"

Line bellow

These can withstand a temperature of 200C under normal atmospheric conditions.


Cat.Ref.
DN
D
D1
D2
L
FBN1*
25
95
41
31
60
FBN1.5*
40
105
56
43
65
FBN2*
50
120
69
55
65
FBN3*
80
155
98
82
65
FBN4*
100
200
132
111
65
FBN6*
150
275
184
162
65
FBN9*
225
350
258
230
65
FBN12
300
420
340
308
65

Vacuum bellows

For pipeline of 80DN and operating under vacuum the bellows are provided with an internal sleeve which supports the convolutions without affecting the flexibility of the bellow. These bellows can withstand a temperature of 200C under full vacuum.

For size upto 50DN, line bellows can be used for these applications.

Cat.Ref.
DN
D
D1
D2
L
L1
t
VB3*
80
155
98
82
70
5
3.0
VB4*
100
200
132
11
70
5
3.5
VB6*
150
275
184
162
70
5
4.0
VB9*
225
350
253
230
70
5
5.0
VB12*
300
420
338
308
70
5
5.0

PTFE BELLOWS GLASS TO METAL

These bellows are used in installation of glass equipment for following purposes :

  • to minimize the transfer of vibrations from the rotating equipments which are connected to the glass assembly.
  • to accommodate the thermal expansion of any metallic (non-glass) equipment which are connected to the glass pipeline.

These are similar to the bellows for glass-to-glass in construction, but having a adaptor bellow flange at one end. Generally this adaptor flange is supplied undrilled so that it can be drilled as per the configuration of mating flange. However, this adaptor bellow flange can be supplied drilled as per "Table E", Table F" or "ASA 150" standards if specified.

Line bellows

Cat.Ref. Undrilled
Cat.Ref. Table E
Cat.Ref. Table F
Cat.Ref. ASA 150
DN
D
L
FBF1*
FBF1/E
FBF1/F
FBF1/A
25
115
60
FBF1.5*
FBF1.5/E
FBF1.5/F
FBF1.5/A
40
150
65
FBF2*
FBF2/E
FBF2/F
FBF2/A
50
165
65
FBF3*
FBF3/E
FBF3/F
FBF3/A
80
200
65
FBF4*
FBF4/E
FBF4/F
FBF4/A
100
220
65
FBF6*
FBF6/E
FBF6/F
FBF6/A
150
285
65
FBF9*
FBF9/E
FBF9/F
FBF9/A
225
395
65
FBF12
FBF12/F
FBF12/F
FBF12/A
300
445
65

Vacuum bellows

Cat.Ref. Undrilled
Cat.Ref. Table E
Cat.Ref. Table F
Cat.Ref. ASA 150
DN
D
L
VBF3*
VBF3/E
VBF3/F
VBF3/A
80
220
70
VBF4*
VBF4/E
VBF4/F
VBF4/A
100
220
70
VBF6*
VBF6/E
VBF6/F
VBF6/A
150
285
70
VBF9*
VBF9/E
VBF9/F
VBF9/A
225
395
70
VBF12
VBF12/E
VBF12/F
VBF12/A
300
445
70

BELLOW FLANGES

Bellow flanges re used to fit a bellow to a glass component. These are made of Cast iron and are used in FBN, VB, FB type bellows. These are provided with two holes at 180 for Distance-locking bolts and are supplied with a split ring.


Cat.Ref.
DN
D
D1
D2
D3
L
L1
L2
BF1*
25
95
43
51
33
7
3
6
BF1.5*
40
110
58
66
45
7
3
6
BF2*
50
120
70
81
57
7
3
6
BF3*
80
155
101
112
84
7
3
6
BF4*
100
200
134
148
113
8
3
6
BF6*
150
275
186
196
164
8
3
6
BF9*
225
350
260
282
234
8
3
6
BF12
300
425
342
363
310
10
5
8

Undrilling flanges

Cat.Ref.
PCD
n x do
n x do
BF1
70
1 x 9ø
2 x 9ø
BF1.5
86
3 x 9ø
2 x 9ø
BF2
98
3 x 9ø
2 x 9ø
BF3
133
6 x 9ø
2 x 9ø
BF4
178
6 x 9ø
2 x 9ø
BF6
254
6 x 9ø
2 x 9ø
BF9
310
8 x 11ø
2 x 11ø
BF12
395
12 x 11ø
2 x 11ø

 

ADAPTOR BELLOW FLANGES

Adaptor bellow flange are used to fit a bellow to a flange having different bolt configuration. These flanges are made of cast iron and are supplied with a spilt ring.

These are particularly used to fit a bellow with a non-glass equipment like Glass-lined Reactor etc. These are used in FBF, VBF, type PTFE bellows

Adaptor bellow flanges are generally supplied undrilled. However, it specified these can be supplied drilled as per "Table E" Table F" and "ASA 150" standards.

Undrilling flanges

Cat.Ref.
DN
D
D1
D2
L
BFA1*
25
115
43
51
7
BFA1.5*
40
150
58
66
7
BFA2*
50
165
70
81
7
BFA3*
80
200
101
112
7
BFA4*
100
220
134
148
8
BFA6*
150
285
186
196
8
BFA9*
225
395
260
2852
8
BFA12
300
445
342
363
10

 

Drilled to Table E


Cat.Ref.
pcd
n x do
BFA1/E
82
4 x 12ø
BFA1.5/E
98
4 x 12ø
BFA2/E
114
4 x 16ø
BFA3/E
146
4 x 16ø
BFA4/E
178
8 x 16ø
BFA6/E
235
8 x 19ø
BFA9/E
324
12 x 19ø
BFA12/E
406
12 x 23

 

Drilled to Table F


Cat.Ref.
pcd
n x do
BFA1/F
87
4 x 16ø
BFA1.5/F
105
4 x 16ø
BFA2/F
127
4 x 16ø
BFA3/F
165
8 x 16ø
BFA4/F
190
8 x 16ø
BFA6/F
260
12 x 19ø
BFA9/F
356
12 x 23ø
BFA12/F
438
12 x 23

 

Drilled to ASA 150

Cat.Ref.
pcd
n x do
BFA1/A
79
4 x 16ø
BFA1.5/A
98
4 x 16ø
BFA2/A
121
4 x 19ø
BFA3/A
152
4 x 19ø
BFA4/A
190
8 x 19ø
BFA6/A
241
8 x 19ø
BFA9/A
298
8 x 19ø
BFA12/A
432
12 x 23