Circular flange assembly ready for bolting straight onto weld pad/nozzle flange
Glass discs separated by spacer ring and independet seals
If damage occurs to one disc, the other maintains service under full operating conditions.
Nominal sizes: DN 50 to DN 200
Viewing diameter: 50 to 175 mm
Materials: stainless, carbon steels and specials
Also available with inter glass heating
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