NW-FT Series Threaded Style Circular Sight Glasses

This series of sight glasses are designed for attachment to stub end pipe, ANSI flanged nozzles or vessel studding outlets. Each is rated for 150 PSIG (10.3 Barg) at 300 ºF (149 ºC) with a tempered soda lime lens and 500 ºF (260 ºC) with a borosilicate lens. Sight glasses are constructed using code materials. Optional accessories include Series PL, MSL, SLEX, REX, FBX illuminators, and Type I wipers.

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Item #
Size
Dimension A
Dimension B
Dimension C
Connection Type
NW-FT-8
8 in

8 in
203 mm

13 1/2 in
343 mm

4 3/4 in
121 mm

Female Threaded
NW-FT-1
1 in

1 5/16 in
33 mm

4 1/4 in
108 mm

1 3/4 in
44 mm

Female Threaded
NW-FT-1.5
1 1/2 in

1 7/8 in
48 mm

5 in
127 mm

2 3/16 in
56 mm

Female Threaded
NW-FT-2
2 in

6 in
60 mm

2 1/2 in
152 mm

2 3/8 in
64 mm

Female Threaded
NW-FT-3
3 in

3 1/2 in
89 mm

7 1/2 in
191 mm

3 1/8 in
79 mm

Female Threaded
NW-FT-4
4 in

4 1/2 in
114 mm

9 in
229 mm

3 1/4 in
83 mm

Female Threaded
NW-FT-5
5 in

5 9/16 in
141 mm

10 in
254 mm

4 1/4 in
108 mm

Female Threaded
NW-FT-6
6 in

6 5/8 in
168 mm

11 in
279 mm

4 1/16 in
103 mm

Female Threaded