Fluid sight glasses GN 743.4 offer a scratch proof sight glass of high stability. The placement of the seal on the outer diameter of the glass eliminates leakage independent from over or under tightening of the sight glass.
The outer diameter of these fluid sight glasses with recessed hex is matched to screw-in holes for pipe fittings according to DIN 3852.
The seal is embedded in a radial recess, and thus cannot be lost or squeezed out during tightening.
These fluid sight glasses can also be used on pressurized tanks. Tests regarding maximum pressure are available.
Assembly note:
For wall thicknesses below 0.16 in (4 mm), use GN 7430 thin hex nuts.
Body
Stainless steel AISI 303
Reflector (Type A)
Plastic
Technopolymer (Polysulfan)
Circlip (Type B)
Stainless steel AISI 301
Sight glass
Float glass
Temperature resistant up to 212 °F (100 °C)
Seals
Rubber NBR (Perbunan®)
RoHS
EPDM seals
| A | With reflector |
| B | Without reflector |
| d1 | d2 Pipe thread | Fine thread | d3 | l1 | l2 | s | |
|---|---|---|---|---|---|---|---|
| 0.43 | G 3/8 | M 16 x 1.5 | - | 0.87 | 0.31 | 0.30 | 0.79 |
| 0.55 | G 1/2 | M 20 x 1.5 | - | 1.02 | 0.33 | 0.30 | 0.91 |
| 0.71 | G 3/4 | M 26 x 1.5 | M 27 x 1.5 | 1.26 | 0.35 | 0.31 | 1.18 |
| 0.94 | G 1 | M 33 x 1.5 | - | 1.57 | 0.43 | 0.33 | 1.42 |
| 1.26 | G 1 1/4 | M 42 x 1.5 | M 42 x 2 | 1.97 | 0.47 | 0.35 | 1.81 |
| Min | Max | Price |
|---|---|---|
| 1 | 99 | $17.59 |
| 100 | 249 | $16.12 |
| 250 | 499 | $14.66 |
| ≥ 500 | $13.19 |
Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time: 800-877-8351
Attention Valued Customer,
Beginning June 15, 2024, we will implement a price adjustment. Some items will have a price decrease, while others will increase. The adjustment helps ensure our commitment to providing our customers with the best products and services.
We will honor current published prices through June 14, 2024.
Customers with pricing agreements will not be effected until annual pricing is reviewed.
Thank you
J.W. Winco
