Sight Glasses 

There are 2 products.
Sight Glasses
Flow through, rectangular and round welding sight glasses with a variety of connection options.
Double window sight glasses, DN 15 – 100, PN 16 – PN 40 (ANSI 150-300), Materials: EN-JL1040, 1.0619+N, 1.4408, 1.0460
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