Hinged Closure Sight Glass


The Hinged Closure Sight Glass provides immediate access to the process, and is designed for mounting PresSure Products Model B or Model L units (depending on pressure requirements) to be hinged and sealed on an O-ring or gasket. Different materials of construction are available to meet your process needs. Units are designed for a weld pad or flange connection (ANSI, DIN, or special bolt pattern).

Materials of Construction:

  1. Sight Glass: Refer to Model L Weld or Model B Weld Units (depending upon pressure)
  2. Weld Pad or Flange: 316 or 304 Stainless Steel SA-240; Carbon Steel PVQ; Hastelloy; Monel; Alloy 20; Titanium; Aluminum; etc.
  3. O-Ring Seal or Gasket: Teflon®; Viton®; Silicone; EPDM; Graphite; Buna-N; etc.
  4. Swing Bolts: 316 or 304 Stainless Steel; Carbon Steel
  5. Hinge: 316 or 304 Stainless Steel; Carbon Steel

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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