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Double Window Sight Glasses
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The double window assembly offers the user an extra layer of reliability by controlling the factors which cause a lens to fail.
If a lens fails, the cause can, in most instances, be traced to one or a combination of the following factors: a stress concentration, thermal stress or shock, erosion or corrosion, and mechanical damage. The double window design provides extra protection against these causes of failure. All sizes except NW150-DW and NW200-DW are rated standard for 150 PSIG (10.3 Barg) pressure and full vacuum at 300 ºF (149 ºC) temperature. NW150- DW and NW200-DW are rated for 125 PSIG (8.6 Barg) pressure at 300 ºF (149 ºC) temperature. Higher pressure and temperature ratings are available upon request.
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Results 1 - 6 of 6
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Item #
Size
Dimension A
Dimension B
Dimension C
Dimension D
NW50-DW
50
mm
4 3/8
in
111
mm
3 1/4
in
83
mm
1 7/8
in
48
mm
3/8
in
10
mm
NW80-DW
80
mm
5 1/16
in
129
mm
4
in
102
mm
1 7/8
in
48
mm
3/8
in
10
mm
NW100-DW
100
mm
6 3/8
in
162
mm
5
in
127
mm
1 15/16
in
49
mm
7/16
in
11
mm
NW125-DW
125
mm
7 3/8
in
187
mm
6
in
152
mm
1 15/16
in
49
mm
7/16
in
11
mm
NW150-DW
150
mm
8 3/8
in
213
mm
6 7/8
in
175
mm
2
in
51
mm
1/2
in
13
mm
NW200-DW
200
mm
10 7/16
in
265
mm
8 13/16
in
224
mm
2 3/8
in
60
mm
1/2
in
13
mm
Results 1 - 6 of 6
1