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Sight Glasses

Each Stainless Tank Sight Glass Assembly by HOLLOWAY perfectly fits our ferrules, or we can custom fabricate our sight glasses to fit your existing ferrules.

A tank sight glass assembly by Holloway shed light on your processes.

FullView™ Sightglass: See Your Ideas Come to Life.

The FullView Sightglass by HOLLOWAY gives you the ability to see your ideas come to life. We ensure that each sight glass assembly we manufacture is held to the strictest standards to ensure quality and reliability. Our assemblies are provided in 2", 3" and 4" sizes and include the ferrule, retainer, sightglass, O-Ring, ferrule gasket, and clamp.

Your HOLLOWAY FullView Sightglass can be used in an existing fitting on a pressure vessel and can be custom ordered with any finish and material type. Missing a part or have a damaged unit? Not a problem. We keep replacement parts on hand for fast and convenient replacement options for our customers.

When seeing more is what you have in mind, come see us at HOLLOWAY.

FullView™ Sightglass Dimensions

SIZE "A" O.D. "B" I.D. "C" HEIGHT "D" CLAMP O.D. "E" HEIGHT
1-1/2" 1.676" 1.250" 0.532" 1.984" 0.732"
2" 2.192" 1.800" 0.614" 2.516" 0.814"
2-1/2" 2.724" 2.124" 0.925" 3.047" 1.200"
3" 3.246" 2.650" 1.100" 3.579" 1.375"
4" 4.320" 3.715" 1.185" 4.682" 1.485"


A tank sight glass assembly from Holloway sets standards.

Stainless Tank Sight Glass Assembly Materials of Construction

HOLLOWAY can make your sight glass assembly in exotic alloys and the following materials:

  • T–316L (standard)
  • T–304L
  • T–317L
  • C–22
  • C-276
  • AL-6XN™
  • Other materials available by request

We're ready to craft your solutions.

Tell us more about the products and services you're interested in—as well as which industry you call home—on our quick-and-easy "Request for Information" form. Or, give us a call and talk to one of our representatives.