Liquip BF4-SG-25Z Sightglass Flange

The Liquip BF4-SG-25Z Sightglass Flange is a 100-mm (4”) Truck Trailer Manufacturers Association (TTMA)-approved sightglass flange that fits behind an API adaptor and Liquip butterfly valve to show if product is present and its color to confirm accurate product identification.

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