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Spectacle Blind · Class 1500

Family: Spectacle Blinds
Reference: Spectacle blind · Class 1500
Standard: ASME B16.48

Dimensions according to ASME B16.48-2020. All dimensional values are in mm. DN and NPS are nominal designations; NPS retains its inch designation.

RF · Female RTJ · Male RTJ

RF · For raised face flanges

Dimensioned drawing

Dimensioned drawing RF · For raised face flanges
Click the drawing to enlarge.

B: inside diameter · O: outside diameter · A: centre-to-centre distance · t: thickness · W: bridge width.

The clearance hole, where required, shall have the same diameter as the flange bolt hole and shall not interfere with the bolts. Bridge thickness Wt is determined in accordance with Section 4.1 of the standard. The raised face shown is optional; see Section 4.3.1.

Class 1500 · RF

Dimensions in mm. DN / NPS nominal sizes in bold.

DNNPSB · Bore ØO · Outside ØA · Centre to centret · ThicknessW · Bridge
151/2″1661806,438
203/4″2167909,741
251″27761009,764
321 1/4″35861109,764
401 1/2″419512512,770
502″5314016512,770
652 1/2″6316219015,776
803″7817220519,176
1004″10220624022,489
1255″12825129028,489
1506″15427932035,189
2008″20334939541,1102
25010″25543248050,8114
30012″30351857060,5114
35014″33357563566,5127
40016″38163870576,2133
45018″42970277585,9146
50020″47875283095,3152
60024″575899990111,3178

DN 15 · NPS 1/2″

DN15
NPS1/2″
B · Bore Ø16
O · Outside Ø61
A · Centre to centre80
t · Thickness6,4
W · Bridge38

DN 20 · NPS 3/4″

DN20
NPS3/4″
B · Bore Ø21
O · Outside Ø67
A · Centre to centre90
t · Thickness9,7
W · Bridge41

DN 25 · NPS 1″

DN25
NPS1″
B · Bore Ø27
O · Outside Ø76
A · Centre to centre100
t · Thickness9,7
W · Bridge64

DN 32 · NPS 1 1/4″

DN32
NPS1 1/4″
B · Bore Ø35
O · Outside Ø86
A · Centre to centre110
t · Thickness9,7
W · Bridge64

DN 40 · NPS 1 1/2″

DN40
NPS1 1/2″
B · Bore Ø41
O · Outside Ø95
A · Centre to centre125
t · Thickness12,7
W · Bridge70

DN 50 · NPS 2″

DN50
NPS2″
B · Bore Ø53
O · Outside Ø140
A · Centre to centre165
t · Thickness12,7
W · Bridge70

DN 65 · NPS 2 1/2″

DN65
NPS2 1/2″
B · Bore Ø63
O · Outside Ø162
A · Centre to centre190
t · Thickness15,7
W · Bridge76

DN 80 · NPS 3″

DN80
NPS3″
B · Bore Ø78
O · Outside Ø172
A · Centre to centre205
t · Thickness19,1
W · Bridge76

DN 100 · NPS 4″

DN100
NPS4″
B · Bore Ø102
O · Outside Ø206
A · Centre to centre240
t · Thickness22,4
W · Bridge89

DN 125 · NPS 5″

DN125
NPS5″
B · Bore Ø128
O · Outside Ø251
A · Centre to centre290
t · Thickness28,4
W · Bridge89

DN 150 · NPS 6″

DN150
NPS6″
B · Bore Ø154
O · Outside Ø279
A · Centre to centre320
t · Thickness35,1
W · Bridge89

DN 200 · NPS 8″

DN200
NPS8″
B · Bore Ø203
O · Outside Ø349
A · Centre to centre395
t · Thickness41,1
W · Bridge102

DN 250 · NPS 10″

DN250
NPS10″
B · Bore Ø255
O · Outside Ø432
A · Centre to centre480
t · Thickness50,8
W · Bridge114

DN 300 · NPS 12″

DN300
NPS12″
B · Bore Ø303
O · Outside Ø518
A · Centre to centre570
t · Thickness60,5
W · Bridge114

DN 350 · NPS 14″

DN350
NPS14″
B · Bore Ø333
O · Outside Ø575
A · Centre to centre635
t · Thickness66,5
W · Bridge127

DN 400 · NPS 16″

DN400
NPS16″
B · Bore Ø381
O · Outside Ø638
A · Centre to centre705
t · Thickness76,2
W · Bridge133

DN 450 · NPS 18″

DN450
NPS18″
B · Bore Ø429
O · Outside Ø702
A · Centre to centre775
t · Thickness85,9
W · Bridge146

DN 500 · NPS 20″

DN500
NPS20″
B · Bore Ø478
O · Outside Ø752
A · Centre to centre830
t · Thickness95,3
W · Bridge152

DN 600 · NPS 24″

DN600
NPS24″
B · Bore Ø575
O · Outside Ø899
A · Centre to centre990
t · Thickness111,3
W · Bridge178

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Female RTJ · Ring joint groove

Dimensioned drawing

Dimensioned drawing Female RTJ · Ring joint groove
Click the drawing to enlarge.

B: inside diameter · O: outside diameter · A: centre-to-centre distance · t: thickness · W: bridge width.

The clearance hole, where required, shall have the same diameter as the flange bolt hole and shall not interfere with the bolts. Bridge thickness Wt is determined in accordance with Section 4.1 of the standard. The RTJ groove is dimensioned according to ASME B16.5.

Class 1500 · FEMALE RTJ

Dimensions in mm. DN / NPS nominal sizes in bold.

DNNPSB · Bore ØO · Outside ØA · Centre to centret · ThicknessW · Bridge
151/2″21618022,438
203/4″27679025,445
251″347110025,454
321 1/4″428111025,454
401 1/2″489212528,457
502″6112416535,154
652 1/2″7313719038,157
803″8916820544,573
1004″11419424047,876
1255″14122929053,876
1506″16824831560,579
2008″21931839573,286
25010″27337148082,5133
30012″324438570101,6133
35014″356489635111,3140
40016″406546705124,0146
45018″457613775133,0152
50020″508673830142,7165
60024″610794990168,1178

DN 15 · NPS 1/2″

DN15
NPS1/2″
B · Bore Ø21
O · Outside Ø61
A · Centre to centre80
t · Thickness22,4
W · Bridge38

DN 20 · NPS 3/4″

DN20
NPS3/4″
B · Bore Ø27
O · Outside Ø67
A · Centre to centre90
t · Thickness25,4
W · Bridge45

DN 25 · NPS 1″

DN25
NPS1″
B · Bore Ø34
O · Outside Ø71
A · Centre to centre100
t · Thickness25,4
W · Bridge54

DN 32 · NPS 1 1/4″

DN32
NPS1 1/4″
B · Bore Ø42
O · Outside Ø81
A · Centre to centre110
t · Thickness25,4
W · Bridge54

DN 40 · NPS 1 1/2″

DN40
NPS1 1/2″
B · Bore Ø48
O · Outside Ø92
A · Centre to centre125
t · Thickness28,4
W · Bridge57

DN 50 · NPS 2″

DN50
NPS2″
B · Bore Ø61
O · Outside Ø124
A · Centre to centre165
t · Thickness35,1
W · Bridge54

DN 65 · NPS 2 1/2″

DN65
NPS2 1/2″
B · Bore Ø73
O · Outside Ø137
A · Centre to centre190
t · Thickness38,1
W · Bridge57

DN 80 · NPS 3″

DN80
NPS3″
B · Bore Ø89
O · Outside Ø168
A · Centre to centre205
t · Thickness44,5
W · Bridge73

DN 100 · NPS 4″

DN100
NPS4″
B · Bore Ø114
O · Outside Ø194
A · Centre to centre240
t · Thickness47,8
W · Bridge76

DN 125 · NPS 5″

DN125
NPS5″
B · Bore Ø141
O · Outside Ø229
A · Centre to centre290
t · Thickness53,8
W · Bridge76

DN 150 · NPS 6″

DN150
NPS6″
B · Bore Ø168
O · Outside Ø248
A · Centre to centre315
t · Thickness60,5
W · Bridge79

DN 200 · NPS 8″

DN200
NPS8″
B · Bore Ø219
O · Outside Ø318
A · Centre to centre395
t · Thickness73,2
W · Bridge86

DN 250 · NPS 10″

DN250
NPS10″
B · Bore Ø273
O · Outside Ø371
A · Centre to centre480
t · Thickness82,5
W · Bridge133

DN 300 · NPS 12″

DN300
NPS12″
B · Bore Ø324
O · Outside Ø438
A · Centre to centre570
t · Thickness101,6
W · Bridge133

DN 350 · NPS 14″

DN350
NPS14″
B · Bore Ø356
O · Outside Ø489
A · Centre to centre635
t · Thickness111,3
W · Bridge140

DN 400 · NPS 16″

DN400
NPS16″
B · Bore Ø406
O · Outside Ø546
A · Centre to centre705
t · Thickness124,0
W · Bridge146

DN 450 · NPS 18″

DN450
NPS18″
B · Bore Ø457
O · Outside Ø613
A · Centre to centre775
t · Thickness133,0
W · Bridge152

DN 500 · NPS 20″

DN500
NPS20″
B · Bore Ø508
O · Outside Ø673
A · Centre to centre830
t · Thickness142,7
W · Bridge165

DN 600 · NPS 24″

DN600
NPS24″
B · Bore Ø610
O · Outside Ø794
A · Centre to centre990
t · Thickness168,1
W · Bridge178

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Male RTJ · Integral ring

Dimensioned drawing

Dimensioned drawing Male RTJ · Integral ring
Click the drawing to enlarge.

B: inside diameter · A: centre-to-centre distance · t: thickness · W: bridge width.

The clearance hole, where required, shall have the same diameter as the flange bolt hole and shall not interfere with the bolts. Bridge thickness Wt is determined in accordance with Section 4.1 of the standard. Oval or octagonal rings are permitted. Their dimensions correspond to ASME B16.20, with Th = T + t; T is the ring height.

Class 1500 · MALE RTJ

Dimensions in mm. DN / NPS nominal sizes in bold.

DNNPSB · Bore ØA · Centre to centret · ThicknessW · Bridge
151/2″21839,738
203/4″27899,745
251″3410212,754
321 1/4″4211112,754
401 1/2″4812415,757
502″6116519,154
652 1/2″7319122,457
803″8920328,473
1004″11424131,876
1255″14129238,176
1506″16831841,179
2008″21939450,886
25010″27348363,5133
30012″32457273,2133
35014″35663579,2140
40016″40670588,9146
45018″45777598,6152
50020″508832108,0165
60024″610991127,0178

DN 15 · NPS 1/2″

DN15
NPS1/2″
B · Bore Ø21
A · Centre to centre83
t · Thickness9,7
W · Bridge38

DN 20 · NPS 3/4″

DN20
NPS3/4″
B · Bore Ø27
A · Centre to centre89
t · Thickness9,7
W · Bridge45

DN 25 · NPS 1″

DN25
NPS1″
B · Bore Ø34
A · Centre to centre102
t · Thickness12,7
W · Bridge54

DN 32 · NPS 1 1/4″

DN32
NPS1 1/4″
B · Bore Ø42
A · Centre to centre111
t · Thickness12,7
W · Bridge54

DN 40 · NPS 1 1/2″

DN40
NPS1 1/2″
B · Bore Ø48
A · Centre to centre124
t · Thickness15,7
W · Bridge57

DN 50 · NPS 2″

DN50
NPS2″
B · Bore Ø61
A · Centre to centre165
t · Thickness19,1
W · Bridge54

DN 65 · NPS 2 1/2″

DN65
NPS2 1/2″
B · Bore Ø73
A · Centre to centre191
t · Thickness22,4
W · Bridge57

DN 80 · NPS 3″

DN80
NPS3″
B · Bore Ø89
A · Centre to centre203
t · Thickness28,4
W · Bridge73

DN 100 · NPS 4″

DN100
NPS4″
B · Bore Ø114
A · Centre to centre241
t · Thickness31,8
W · Bridge76

DN 125 · NPS 5″

DN125
NPS5″
B · Bore Ø141
A · Centre to centre292
t · Thickness38,1
W · Bridge76

DN 150 · NPS 6″

DN150
NPS6″
B · Bore Ø168
A · Centre to centre318
t · Thickness41,1
W · Bridge79

DN 200 · NPS 8″

DN200
NPS8″
B · Bore Ø219
A · Centre to centre394
t · Thickness50,8
W · Bridge86

DN 250 · NPS 10″

DN250
NPS10″
B · Bore Ø273
A · Centre to centre483
t · Thickness63,5
W · Bridge133

DN 300 · NPS 12″

DN300
NPS12″
B · Bore Ø324
A · Centre to centre572
t · Thickness73,2
W · Bridge133

DN 350 · NPS 14″

DN350
NPS14″
B · Bore Ø356
A · Centre to centre635
t · Thickness79,2
W · Bridge140

DN 400 · NPS 16″

DN400
NPS16″
B · Bore Ø406
A · Centre to centre705
t · Thickness88,9
W · Bridge146

DN 450 · NPS 18″

DN450
NPS18″
B · Bore Ø457
A · Centre to centre775
t · Thickness98,6
W · Bridge152

DN 500 · NPS 20″

DN500
NPS20″
B · Bore Ø508
A · Centre to centre832
t · Thickness108,0
W · Bridge165

DN 600 · NPS 24″

DN600
NPS24″
B · Bore Ø610
A · Centre to centre991
t · Thickness127,0
W · Bridge178

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TOBER SL

C/ Brincadero, nº 25
El Raso Industrial Estate · 28750
San Agustín de Guadalix, Madrid
Burgos motorway, exit 36

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+34 918 489 798
Fax: +34 918 414 882
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