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Bull’s Eye See Thru Flanged Sight Flow Indicator


The Bull's Eye See-Thru Flanged unit is an in-line (See- Thru) type that is used in existing or new piping to observe material flow through a line. It is available for standard ANSI B16.5 (1/2" to 11/2") flange ends to specified face-to-face dimensions and can be supplied with indicators such as drip tubes or flappers. The Bull's Eye See- Thru can be manufactured to meet your pressure and temperature requirements, and different materials of construction are available to meet your process needs. Applications requiring DIN standards or non-ANSI flanges are available upon request.

Materials of Construction:

  1. Body: 316 Stainless Steel; Carbon Steel; Hastelloy; Alloy 20; Titanium; Aluminum; etc.
  2. Retainer Caps: 316 Stainless Steel; Carbon Steel
  3. Lens: Two-Piece Laminated Tempered Soda Lime (Standard); Tempered or Annealed Borosilicate; Quartz; Lexan; Acrylic; Mica Shields
  4. Lens Cushion Gaskets: Teflon ; Grafoil ; Gylon ; Blue-Gard ; etc.
  5. O-Rings: Teflon ; Viton ; Silicone; Buna-N; Die Formed Graphite; etc.
  6. Flanges: 316 Stainless Steel SA-182; Carbon Steel SA-105; Hastelloy; Alloy 20; Titanium; Aluminum; etc.

Factory Mutual Approved
This sight glass has been certified as maintaining a Quality Assurance System in accordance with the Pressure Equipment Directive 97/23/EC (PED) Annex I, Paragraph 4.3 by the Certification Body 0036 of the TÜV Industrie Service GmbH.
Bull's Eye See Thru Flanged Sight Flow Indicator

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