Gauge Glass glass processing connects Gauge Glass properties and supplied forms with cutting, drilling, CNC machining, grinding, polishing, cleaning and inspection decisions for a drawing-defined part.
What This Foundation Page Defines
Gauge Glass glass processing connects Gauge Glass properties and supplied forms with cutting, drilling, CNC machining, grinding, polishing, cleaning and inspection decisions for a drawing-defined part.
Grade and supply form
DIN 7081 borosilicate gauge glass
Processing route
Precision cutting; CNC/ultrasonic machining where qualified; grinding; lapping; polishing; cleaning; inspection
Use conditions
Show liquid level reliably in a tubular, transparent-plate or reflex-prism gauge while retaining the process fluid.
Select the Exact Grade and Processing Route
A material-family name is not a complete production specification. Confirm the exact grade, supplied form, thickness, geometry, surface condition and service environment.
Gauge Glass
Gauge/sight glass
Gauge Glass
Tubular gauge, transparent plate, reflex prismatic plate, red-line tube or heavy-wall tube
Gauge Glass
Show liquid level reliably in a tubular, transparent-plate or reflex-prism gauge while retaining the process fluid.
Gauge Glass Technical and Selection Notes
Published values and product ranges retain their source conditions. Final feasibility depends on the selected grade, supplied form, geometry, processing sequence and inspection method.
| Property | Published reference |
|---|---|
| Material category | Gauge/sight glass |
| Chemical resistance | Acid class 1 reported by the reviewed DIN 7081 manufacturer datasheet |
| Available forms | Oblong transparent or reflex gauge-glass plates |
| Definition area | Project-specific reference |
|---|---|
| Component family | Gauge Glass |
| Typical materials | DURAN tubular gauge glass or tempered borosilicate reflex/transparent level-gauge glass |
| Shapes and geometry | Tubular gauge, transparent plate, reflex prismatic plate, red-line tube or heavy-wall tube |
| Thickness reference | Plate gauge references use 17 or 21 mm thickness; tubular wall is variant-specific |
| Size reference | DIN 7081 plates: 95–500 mm length, 30 or 34 mm width; tubular products publish 90–600 psi variants by size/end finish |
| Hole and slot options | No added holes in the pressure-viewing area; ports belong to the gauge body No added holes in the pressure-viewing area; ports belong to the gauge body |
| Edge options | Ground seating edges; tubular ends fire-polished or saw-cut/ground according to variant |
| Surface options | Smooth transparent faces or controlled reflex prisms; clear reading area required |
| Installed function | Show liquid level reliably in a tubular, transparent-plate or reflex-prism gauge while retaining the process fluid. |
How the Drawing Changes the Processing Plan
Base pages do not assign one universal process or tolerance. ANTGLASS selects cutting, drilling, CNC machining, grinding, lapping, polishing, cleaning and inspection steps from the drawing.
| Planning area | What to review |
|---|---|
| Candidate operations | Tube/plate forming, precision cutting, end grinding, prism forming for reflex type, tempering, inspection and marking |
| Material response | Material- and grade-dependent; qualify cutting, grinding, drilling, lapping and polishing against fracture and surface requirements |
| Feature geometry | No added holes in the pressure-viewing area; ports belong to the gauge body |
| Edge and surface finish | Ground seating edges; tubular ends fire-polished or saw-cut/ground according to variant |
| Application conditions | State steam and liquid temperature; mica protection and end finish change allowable service. |
| Inspection route | Dimension/profile inspection, edge and prism visual check, material marking, assembly leakage and pressure validation |
Information Required Before Quotation
State the drawing revision, exact material or approved alternatives, dimensions, quantity, feature geometry, edge and surface requirements, operating conditions and the acceptance method.
| Decision area | What to confirm |
|---|---|
| Optical function | Reflex geometry must provide readable light/dark contrast; transparent gauges require clear paired faces. |
| Thermal environment | State steam and liquid temperature; mica protection and end finish change allowable service. |
| Chemical exposure | Screen for hot water/steam, caustic solutions, HF and media that accelerate glass loss. |
| Mechanical load | Pressure rating depends on tube/plate size, end finish, length, gasket and gauge body. |
| Pressure or vacuum | Gauge Glass: State absolute and differential pressure/vacuum, temperature, span, mounting and proof/leak acceptance |
| Edge condition | Seating edges and tube ends must be free of damaging chips; reflex prisms must retain profile quality. |
| Surface condition | Seating edges and tube ends must be free of damaging chips; reflex prisms must retain profile quality. |
| Cleaning | Clean prisms and viewing faces with non-scratching chemistry; remove scale without rounding reflex profiles or damaging seating edges. |
RFQ inputs
- Gauge type, standard/size code, length, width/OD, thickness/wall, pressure, temperature, medium, end finish, gasket and mica protection
- Gauge type, standard/size code, dimensions, pressure, temperature, medium, end finish, gasket and mica protection.
- Provide a drawing revision, material or grade, quantity, dimensions, tolerances, critical surfaces and the required inspection record.
Failure Risks and Inspection Focus
Inspection is tied to the functional dimensions and surfaces shown on the approved drawing; generic catalogue values do not replace project acceptance criteria.
| Review item | Project-specific focus |
|---|---|
| Product design risk | Wrong reflex/transparent type, steam/alkali attack, gasket overload, end damage and pressure misapplication |
| Product inspection | Dimension/profile inspection, edge and prism visual check, material marking, assembly leakage and pressure validation |
| Application failure modes | Incorrect gauge type, caustic attack, end damage, uneven gasket compression and misuse of a pressure table. |
| Application inspection | Dimensional/profile inspection, edge and prism visual examination, marking check and assembly leak/pressure test. |
| Acceptance method | Microscopic Edge Inspection: Compare calibrated result with the drawing, purchase order or approved test specification |
Selected Technical References
References support the assigned material, product or application records. They do not replace the customer drawing, approved sample or production specification.
- DIN 7081:1999-05 Pressure resistant sight glasses made of borosilicate glass for use in oblong armatures DIN Media
- SCHOTT Tubular Gauge Glass schott.com
- KLINGER Instrumentation and Level Gauges klinger-international.com
- Reflex and Transparent Level Gauge Glass DIN 7081 Dumico
- Optical Manufacturing Capabilities Bond Optics
Request a Project-Specific Glass Review
Send the drawing, material, dimensions, quantity, tolerances, surfaces and inspection requirements for feasibility review.
- Material: Gauge Glass
- Drawing or part sketch
- glass type/grade
- Thickness / part size
- Quantity
STEP/STP, DXF, DWG, PDF, IGS/IGES or ZIP.
Confidential drawing review. NDA support available on request.
Frequently Asked Questions
These answers use the material, process, product and application data assigned to this page.
Where can Gauge Glass become a poor fit for Gauge Glass glass processing?
For Gauge Glass glass processing, the relevant material basis is: Liquid-level gauges and process observation The main qualification point is: Grade, thickness, surface state, wavelength and temperature conditions must not be generalized.
Which edge and surface notes belong on a Gauge Glass drawing for Gauge Glass glass processing?
For Gauge Glass glass processing, the available geometry reference is: Tubular gauge, transparent plate, reflex prismatic plate, red-line tube or heavy-wall tube The RFQ or design review should also include: Gauge type, standard/size code, length, width/OD, thickness/wall, pressure, temperature, medium, end finish, gasket and mica protection.
How does the installed function of Gauge Glass affect the design described by Gauge Glass glass processing?
For Gauge Glass glass processing, Show liquid level reliably in a tubular, transparent-plate or reflex-prism gauge while retaining the process fluid. Gauge-specific borosilicate products combine chemical/thermal resistance with controlled geometry and marking.
Which environmental risks can change the material choice for Gauge Glass glass processing in Gauge Glass?
For Gauge Glass glass processing, Incorrect gauge type, caustic attack, end damage, uneven gasket compression and misuse of a pressure table. The assigned inspection route is: Dimensional/profile inspection, edge and prism visual examination, marking check and assembly leak/pressure test.
How is the result of Microscopic Edge Inspection judged for Gauge Glass glass processing?
Microscopic Edge Inspection uses Calibrated optical microscope. Compare calibrated result with the drawing, purchase order or approved test specification For Gauge Glass glass processing, the drawing must identify the characteristic and acceptance limit to be checked.
Which RFQ details are specific to Gauge Glass glass processing?
For Gauge Glass glass processing, gauge type, standard/size code, length, width/OD, thickness/wall, pressure, temperature, medium, end finish, gasket and mica protection Gauge type, standard/size code, dimensions, pressure, temperature, medium, end finish, gasket and mica protection.