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Spectacle Blind · Class 300

Family: Spectacle Blinds
Reference: Spectacle blind · Class 300
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 300 · RF

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

DNNPSB · Bore ØO · Outside ØA · Centre to centret · ThicknessW · Bridge
151/2″1651656,438
203/4″2164806,438
251″2770906,438
321 1/4″42791006,438
401 1/2″48921156,438
502″611081259,751
652 1/2″731271509,751
803″891461709,764
903 1/2″10216218512,764
1004″11417820012,764
1255″14121323515,776
1506″16824827015,776
2008″21930533022,476
25010″27335938525,4102
30012″32441945028,4102
35014″35648351531,8108
40016″40653657038,1108
45018″45759463041,1114
50020″50865168544,5121
60024″61077281050,8140

DN 15 · NPS 1/2″

DN15
NPS1/2″
B · Bore Ø16
O · Outside Ø51
A · Centre to centre65
t · Thickness6,4
W · Bridge38

DN 20 · NPS 3/4″

DN20
NPS3/4″
B · Bore Ø21
O · Outside Ø64
A · Centre to centre80
t · Thickness6,4
W · Bridge38

DN 25 · NPS 1″

DN25
NPS1″
B · Bore Ø27
O · Outside Ø70
A · Centre to centre90
t · Thickness6,4
W · Bridge38

DN 32 · NPS 1 1/4″

DN32
NPS1 1/4″
B · Bore Ø42
O · Outside Ø79
A · Centre to centre100
t · Thickness6,4
W · Bridge38

DN 40 · NPS 1 1/2″

DN40
NPS1 1/2″
B · Bore Ø48
O · Outside Ø92
A · Centre to centre115
t · Thickness6,4
W · Bridge38

DN 50 · NPS 2″

DN50
NPS2″
B · Bore Ø61
O · Outside Ø108
A · Centre to centre125
t · Thickness9,7
W · Bridge51

DN 65 · NPS 2 1/2″

DN65
NPS2 1/2″
B · Bore Ø73
O · Outside Ø127
A · Centre to centre150
t · Thickness9,7
W · Bridge51

DN 80 · NPS 3″

DN80
NPS3″
B · Bore Ø89
O · Outside Ø146
A · Centre to centre170
t · Thickness9,7
W · Bridge64

DN 90 · NPS 3 1/2″

DN90
NPS3 1/2″
B · Bore Ø102
O · Outside Ø162
A · Centre to centre185
t · Thickness12,7
W · Bridge64

DN 100 · NPS 4″

DN100
NPS4″
B · Bore Ø114
O · Outside Ø178
A · Centre to centre200
t · Thickness12,7
W · Bridge64

DN 125 · NPS 5″

DN125
NPS5″
B · Bore Ø141
O · Outside Ø213
A · Centre to centre235
t · Thickness15,7
W · Bridge76

DN 150 · NPS 6″

DN150
NPS6″
B · Bore Ø168
O · Outside Ø248
A · Centre to centre270
t · Thickness15,7
W · Bridge76

DN 200 · NPS 8″

DN200
NPS8″
B · Bore Ø219
O · Outside Ø305
A · Centre to centre330
t · Thickness22,4
W · Bridge76

DN 250 · NPS 10″

DN250
NPS10″
B · Bore Ø273
O · Outside Ø359
A · Centre to centre385
t · Thickness25,4
W · Bridge102

DN 300 · NPS 12″

DN300
NPS12″
B · Bore Ø324
O · Outside Ø419
A · Centre to centre450
t · Thickness28,4
W · Bridge102

DN 350 · NPS 14″

DN350
NPS14″
B · Bore Ø356
O · Outside Ø483
A · Centre to centre515
t · Thickness31,8
W · Bridge108

DN 400 · NPS 16″

DN400
NPS16″
B · Bore Ø406
O · Outside Ø536
A · Centre to centre570
t · Thickness38,1
W · Bridge108

DN 450 · NPS 18″

DN450
NPS18″
B · Bore Ø457
O · Outside Ø594
A · Centre to centre630
t · Thickness41,1
W · Bridge114

DN 500 · NPS 20″

DN500
NPS20″
B · Bore Ø508
O · Outside Ø651
A · Centre to centre685
t · Thickness44,5
W · Bridge121

DN 600 · NPS 24″

DN600
NPS24″
B · Bore Ø610
O · Outside Ø772
A · Centre to centre810
t · Thickness50,8
W · Bridge140

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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 300 · FEMALE RTJ

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

DNNPSB · Bore ØO · Outside ØA · Centre to centret · ThicknessW · Bridge
151/2″21516515,738
203/4″27648019,145
251″34709019,151
321 1/4″427910022,451
401 1/2″489011522,457
502″6110812525,457
652 1/2″7312715028,457
803″8914617028,457
903 1/2″10215918528,464
1004″11417520031,864
1255″14121023535,170
1506″16824127035,183
2008″21930233041,195
25010″27335638544,5102
30012″32441345050,8121
35014″35645751553,8127
40016″40650857057,2127
45018″45757563060,5127
50020″50863568569,9127
60024″61074981079,2152

DN 15 · NPS 1/2″

DN15
NPS1/2″
B · Bore Ø21
O · Outside Ø51
A · Centre to centre65
t · Thickness15,7
W · Bridge38

DN 20 · NPS 3/4″

DN20
NPS3/4″
B · Bore Ø27
O · Outside Ø64
A · Centre to centre80
t · Thickness19,1
W · Bridge45

DN 25 · NPS 1″

DN25
NPS1″
B · Bore Ø34
O · Outside Ø70
A · Centre to centre90
t · Thickness19,1
W · Bridge51

DN 32 · NPS 1 1/4″

DN32
NPS1 1/4″
B · Bore Ø42
O · Outside Ø79
A · Centre to centre100
t · Thickness22,4
W · Bridge51

DN 40 · NPS 1 1/2″

DN40
NPS1 1/2″
B · Bore Ø48
O · Outside Ø90
A · Centre to centre115
t · Thickness22,4
W · Bridge57

DN 50 · NPS 2″

DN50
NPS2″
B · Bore Ø61
O · Outside Ø108
A · Centre to centre125
t · Thickness25,4
W · Bridge57

DN 65 · NPS 2 1/2″

DN65
NPS2 1/2″
B · Bore Ø73
O · Outside Ø127
A · Centre to centre150
t · Thickness28,4
W · Bridge57

DN 80 · NPS 3″

DN80
NPS3″
B · Bore Ø89
O · Outside Ø146
A · Centre to centre170
t · Thickness28,4
W · Bridge57

DN 90 · NPS 3 1/2″

DN90
NPS3 1/2″
B · Bore Ø102
O · Outside Ø159
A · Centre to centre185
t · Thickness28,4
W · Bridge64

DN 100 · NPS 4″

DN100
NPS4″
B · Bore Ø114
O · Outside Ø175
A · Centre to centre200
t · Thickness31,8
W · Bridge64

DN 125 · NPS 5″

DN125
NPS5″
B · Bore Ø141
O · Outside Ø210
A · Centre to centre235
t · Thickness35,1
W · Bridge70

DN 150 · NPS 6″

DN150
NPS6″
B · Bore Ø168
O · Outside Ø241
A · Centre to centre270
t · Thickness35,1
W · Bridge83

DN 200 · NPS 8″

DN200
NPS8″
B · Bore Ø219
O · Outside Ø302
A · Centre to centre330
t · Thickness41,1
W · Bridge95

DN 250 · NPS 10″

DN250
NPS10″
B · Bore Ø273
O · Outside Ø356
A · Centre to centre385
t · Thickness44,5
W · Bridge102

DN 300 · NPS 12″

DN300
NPS12″
B · Bore Ø324
O · Outside Ø413
A · Centre to centre450
t · Thickness50,8
W · Bridge121

DN 350 · NPS 14″

DN350
NPS14″
B · Bore Ø356
O · Outside Ø457
A · Centre to centre515
t · Thickness53,8
W · Bridge127

DN 400 · NPS 16″

DN400
NPS16″
B · Bore Ø406
O · Outside Ø508
A · Centre to centre570
t · Thickness57,2
W · Bridge127

DN 450 · NPS 18″

DN450
NPS18″
B · Bore Ø457
O · Outside Ø575
A · Centre to centre630
t · Thickness60,5
W · Bridge127

DN 500 · NPS 20″

DN500
NPS20″
B · Bore Ø508
O · Outside Ø635
A · Centre to centre685
t · Thickness69,9
W · Bridge127

DN 600 · NPS 24″

DN600
NPS24″
B · Bore Ø610
O · Outside Ø749
A · Centre to centre810
t · Thickness79,2
W · Bridge152

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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 300 · MALE RTJ

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

DNNPSB · Bore ØA · Centre to centret · ThicknessW · Bridge
151/2″21656,438
203/4″27809,745
251″34909,751
321 1/4″421009,751
401 1/2″481159,757
502″6112512,757
652 1/2″7315015,757
803″8917015,757
903 1/2″10218015,764
1004″11420015,764
1255″14123519,176
1506″16827022,483
2008″21933025,495
25010″27339028,4102
30012″32445035,1121
35014″35651538,1127
40016″40657041,1127
45018″45763044,5127
50020″50868550,8127
60024″61081057,2152

DN 15 · NPS 1/2″

DN15
NPS1/2″
B · Bore Ø21
A · Centre to centre65
t · Thickness6,4
W · Bridge38

DN 20 · NPS 3/4″

DN20
NPS3/4″
B · Bore Ø27
A · Centre to centre80
t · Thickness9,7
W · Bridge45

DN 25 · NPS 1″

DN25
NPS1″
B · Bore Ø34
A · Centre to centre90
t · Thickness9,7
W · Bridge51

DN 32 · NPS 1 1/4″

DN32
NPS1 1/4″
B · Bore Ø42
A · Centre to centre100
t · Thickness9,7
W · Bridge51

DN 40 · NPS 1 1/2″

DN40
NPS1 1/2″
B · Bore Ø48
A · Centre to centre115
t · Thickness9,7
W · Bridge57

DN 50 · NPS 2″

DN50
NPS2″
B · Bore Ø61
A · Centre to centre125
t · Thickness12,7
W · Bridge57

DN 65 · NPS 2 1/2″

DN65
NPS2 1/2″
B · Bore Ø73
A · Centre to centre150
t · Thickness15,7
W · Bridge57

DN 80 · NPS 3″

DN80
NPS3″
B · Bore Ø89
A · Centre to centre170
t · Thickness15,7
W · Bridge57

DN 90 · NPS 3 1/2″

DN90
NPS3 1/2″
B · Bore Ø102
A · Centre to centre180
t · Thickness15,7
W · Bridge64

DN 100 · NPS 4″

DN100
NPS4″
B · Bore Ø114
A · Centre to centre200
t · Thickness15,7
W · Bridge64

DN 125 · NPS 5″

DN125
NPS5″
B · Bore Ø141
A · Centre to centre235
t · Thickness19,1
W · Bridge76

DN 150 · NPS 6″

DN150
NPS6″
B · Bore Ø168
A · Centre to centre270
t · Thickness22,4
W · Bridge83

DN 200 · NPS 8″

DN200
NPS8″
B · Bore Ø219
A · Centre to centre330
t · Thickness25,4
W · Bridge95

DN 250 · NPS 10″

DN250
NPS10″
B · Bore Ø273
A · Centre to centre390
t · Thickness28,4
W · Bridge102

DN 300 · NPS 12″

DN300
NPS12″
B · Bore Ø324
A · Centre to centre450
t · Thickness35,1
W · Bridge121

DN 350 · NPS 14″

DN350
NPS14″
B · Bore Ø356
A · Centre to centre515
t · Thickness38,1
W · Bridge127

DN 400 · NPS 16″

DN400
NPS16″
B · Bore Ø406
A · Centre to centre570
t · Thickness41,1
W · Bridge127

DN 450 · NPS 18″

DN450
NPS18″
B · Bore Ø457
A · Centre to centre630
t · Thickness44,5
W · Bridge127

DN 500 · NPS 20″

DN500
NPS20″
B · Bore Ø508
A · Centre to centre685
t · Thickness50,8
W · Bridge127

DN 600 · NPS 24″

DN600
NPS24″
B · Bore Ø610
A · Centre to centre810
t · Thickness57,2
W · Bridge152

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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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