Our low cost, maintenance friendly L weld sight glasses feature larger viewing window diameters than ANSI flanges of comparable overall sizes
. This design features our proprietary glass sidewall sealing mechanism that provides the following advantages.
• Larger view
for the given size of weld body compared to ANSI flange diameters.
• Lower cost
for a given window size due to the smaller body size.
• Easy maintenance
It is impossible to crush the glass window by over-torqueing the flange
• Excellent sealing
The proprietary sidewall seal will hold through many thermal cycles and
These windows can handle temperatures ranging from cryogenic range to over 450F (232C), and pressures ranging from full vacuum to 150 PSIG. If your temperature and pressure requirements exceed these values, please look at our Model B Weld
Our more popular L weld configurations carry Factory Mutual (FM) approvals and Canadian Registration Numbers (CRN). Our manufacturing processes are audited by third parties according to FM, TUV, and Canadian Standards Association requirements.
||316 or 304 Stainless Steel SA-351 or SA-240; Carbon Steel PVQ and SA-516 Grade 70; Hastelloy; Alloy 20; Titanium; Monel; etc.
||316 or 304 Stainless Steel SA-351; Carbon Steel PVQ. Other materials upon request.
|Retainer Cap Bolts:
||18-8 Stainless Steel; Carbon Steel SA-193*
||Two-Piece Laminated Tempered Soda Lime (standard) , Tempered or Annealed Borosilicate, Quartz, Polycarbonate, Acrylic. Other materials upon request.
|Lens Cushion Gaskets:
||TeflonⓇ GrafoilⓇ GylonⓇ Blue-GardⓇ etc.
||TeflonⓇ VitonⓇ Silicone (all standard); EPDM
*By request only
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.