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RS-OB Series Rectangular Sight Glasses

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Series RS-OB rectangular ob-round sight glasses are manufactured from ASME Section VIII acceptable metals. The lower flange can be supplied thicker if required to reinforce the vessel opening or curved to match the vessel's geometry. Standard lengths are listed with special sizes quoted upon request. The Series RS-OB is recommended for pressures up to 150 PSIG (14.3 Barg) and temperatures to 500ºF (260 ºC). Higher temperatures and pressures available with special gasket and lens materials. ASME code calculations and any resulting additional material needed to reinforce sight glass opening to meet ASME code is the responsibility of the buyer.








 DOWNLOADS 

Data Sheet
(PDF, 748KB)

IOM Manual
(PDF, 340KB)

RS-OB 2X12
(PDF, 112KB)

RS-OB 2X18
(PDF, 118KB)

RS-OB 3X12
(PDF, 116KB)

RS-OB 3X18
(PDF, 120KB)

RS-OB 4X12
(PDF, 117KB)

RS-OB 4X18
(PDF, 167KB)

Guide to Corrosion Resistance
(PDF, 114KB)

   
  Results 1 - 6 of 6 1 

Item #

Dimension A

Dimension B

Dimension C

Dimension D

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RS-OB 2x12 2 in
51
mm
12 in
305
mm
5 in
127
mm
15 in
381
mm
RS-OB 2x18 2 in
51
mm
18 in
457
mm
5 in
127
mm
21 in
533
mm
RS-OB 3x12 3 in
76
mm
12 in
305
mm
6 in
152
mm
16 in
406
mm
RS-OB 3x18 3 in
76
mm
18 in
457
mm
6 in
152
mm
22 in
559
mm
RS-OB 4x12 4 in
102
mm
12 in
305
mm
7 in
178
mm
17 in
432
mm
RS-OB 4x18 4 in
102
mm
18 in
457
mm
7 in
178
mm
23 in
584
mm
  Results 1 - 6 of 6 1