Bull’s Eye See-Thru Sight Flow Indicator


The Bull's Eye See-Thru 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 1/8" to 1-1/2" FNPT pipe thread connections, 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. This unit can also be furnished with other types of connections, including socket weld, flange, sanitary, or as specified.

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 or Packing: Teflon®; Viton®; Silicone; Buna-N; Die-Formed Graphite; etc.

TV SDFactory 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.

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