Sanitary Neck-Flanged Sight Glass
The Neck-Flanged Sight Glass incorporates extended pipe necks welded to each flange, creating stand-off distance between the process pipeline and the glass viewing window. This design isolates the glass from direct pipe stress and thermal shock, greatly extending service life in demanding high-temperature or high-vibration environments. All wetted surfaces are finished to hygienic standards.
Sanitary Neck-Flanged Sight Glass
Key Features
- Extended weld necks absorb pipe stress and vibration to protect the glass window.
- Improved thermal insulation between the process fluid and the glass element.
- Robust construction suitable for fluctuating pressure and temperature cycles.
- Available in custom neck lengths to suit installation requirements.
Technical Specifications
- Maximum Working Pressure: 16 bar (232 psi).
- Operating Temperature: -20 degrees C to 160 degrees C (-4 degrees F to 320 degrees F).
- Surface Roughness: Ra≤ 0.8 um .
- Body Material: AISI 304/316L stainless steel.
- Seal Material: EPDM, Silicone, or PTFE (FDA-compliant).
- End Connection: Weld neck flange (DIN or ANSI standard).
Applications
- Steam sterilisation and autoclaving pipelines in pharmaceutical plants.
- High-temperature processing in dairy and food production.
- Chemical reactors and high-vibration piping systems.
- Bioreactor feed and transfer lines.
- Any application requiring extended thermal stand-off for the glass element.







