Borofloat Glass is reviewed here as a recommended route in the application record for Level Gauge Sight Glass. Suitability depends on the exact grade, wavelength or viewing duty, temperature, chemicals, pressure or impact, mounting, edge and surface specification, cleaning and system-level validation.
Level Gauge Sight Glass glass processing for Borofloat Glass: Compatibility and Specification Basis
Borofloat Glass is reviewed here as a recommended route in the application record for Level Gauge Sight Glass. Suitability depends on the exact grade, wavelength or viewing duty, temperature, chemicals, pressure or impact, mounting, edge and surface specification, cleaning and system-level validation.
Level Gauge Sight Glass
Show liquid level reliably in a tubular, transparent-plate or reflex-prism gauge while retaining the process fluid.
Borofloat Glass
Borofloat Glass is tied to the configured V4.1 material record, but manufacturer, grade, supplied condition and certificate requirements must be stated.
Recommended route in the application record
Borofloat Glass appears in the V4.1 recommended material route for Level Gauge Sight Glass, but the exact grade and assembly conditions still require validation.
Drawing and system validation
The material name does not certify the installed equipment. Grade, thickness, edge, surface, coating, mounting and service-condition validation remain project-specific.
Application Conditions That Control Material Selection
Optical, thermal, chemical, mechanical, pressure, sealing and cleaning requirements must be defined before this material route is accepted.
| Service condition | What to define |
|---|---|
| Optical or viewing requirement | Reflex geometry must provide readable light/dark contrast; transparent gauges require clear paired faces. |
| Temperature and thermal cycling | State steam and liquid temperature; mica protection and end finish change allowable service. |
| Chemical and cleaning exposure | Screen for hot water/steam, caustic solutions, HF and media that accelerate glass loss. |
| Mechanical and mounting load | Pressure rating depends on tube/plate size, end finish, length, gasket and gauge body. |
| Pressure or vacuum boundary | Gauge Glass: State absolute and differential pressure/vacuum, temperature, span, mounting and proof/leak acceptance |
| Cleaning and handling | Clean prisms and viewing faces with non-scratching chemistry; remove scale without rounding reflex profiles or damaging seating edges. |
Borofloat Glass for Level Gauge Sight Glass
The V4.1 application route and the selected material record are shown separately so an unsupported combination is not presented as automatically approved.
| Decision area | Application and material basis |
|---|---|
| Compatibility status | Recommended route in the application record. Borofloat Glass appears in the V4.1 recommended material route for Level Gauge Sight Glass, but the exact grade and assembly conditions still require validation. |
| Application recommended route | DURAN tubular gauge glass or tempered borosilicate DIN 7081 reflex/transparent plate matched to medium and pressure. |
| Application alternatives | Tubular DURAN gauge glass, reflex/transparent borosilicate plate, or fused quartz only where the gauge design and medium support it. |
| Selected material capability | Optical, thermal, chemical or mechanical glass components within the cited grade limits |
| Selected material limitations | Grade, thickness, surface state, wavelength and temperature conditions must not be generalized |
| Selection evidence required | Document why Borofloat Glass is chosen for Level Gauge Sight Glass, including rejected alternatives and the validation method. |
| Selected material property | Published reference |
|---|---|
| Material category | Borosilicate 3.3 |
| Thermal expansion | 3.25e-6 1/K (20 to 300 deg C; ISO 7991 reference value) |
| Service temperature | 500 deg C (Short-term use below 10 h; reference value); 450 deg C (Long-term use at or above 10 h; reference value) |
| Refractive index | 1.47140 index (587.6 nm) |
| Available forms | Sheet, plate, disc, window, tube, rod or blank where the named grade is supplied in that form |
Drawing, Processing and Assembly Definition
Phase 6I does not import generic process capability numbers. Manufacturing and acceptance remain tied to the exact grade, geometry, quantity and drawing.
| Route item | Project-specific requirement |
|---|---|
| Typical component forms | Tubular gauge, reflex plate, transparent plate, red-line tube or heavy-wall tube. |
| Application process route | Tube/plate forming, precision cut-to-length, end grinding or fire polishing, prism forming, tempering and marking. |
| Material-compatible processes | Precision cutting; CNC/ultrasonic machining where qualified; grinding; lapping; polishing; cleaning; inspection |
| Size and thickness | DIN 7081 reference: 95–500 mm length, 30/34 mm width and 17/21 mm thickness; tubular ratings span named variants. |
| Edge and surface zones | Seating edges and tube ends must be free of damaging chips; reflex prisms must retain profile quality. |
| Drawing release | For Level Gauge Sight Glass glass processing for Borofloat Glass, identify exact grade, datums, clear aperture, mounting and sealing lands, edge profile, surface quality, coatings, quantity, inspection and packaging. |
Quality Controls for Level Gauge Sight Glass glass processing for Borofloat Glass
Inspection must verify both the material-dependent characteristics and the installed application requirement.
| Risk or control | Application × material focus |
|---|---|
| Application failure modes | Incorrect gauge type, caustic attack, end damage, uneven gasket compression and misuse of a pressure table. |
| Material-specific limits | Grade, thickness, surface state, wavelength and temperature conditions must not be generalized |
| Inspection method | Dimensional/profile inspection, edge and prism visual examination, marking check and assembly leak/pressure test. |
| Standards and system validation | DIN 7081 for pressure-resistant oblong borosilicate gauge glasses; gauge-body pressure/leak acceptance remains assembly-specific. |
| First article | For Level Gauge Sight Glass glass processing for Borofloat Glass, validate fit, optical or viewing performance, mounting, cleaning and the most critical service condition before batch release. |
| Traceability and packaging | State grade certificate, lot, inspection report, coating side, cleanliness, edge protection and packaging requirements. |
Information Needed Before Quotation
Provide the exact material grade or required properties together with application conditions and the finished-component drawing.
RFQ inputs
- Applicable standard, diameter, thickness, pressure, temperature, medium/concentration, armature, gasket, thermal cycle, safety protection and documentation
- 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.
Selected Application and Material References
References support the separate application and material records. They do not certify this exact combination or the finished assembly.
- SCHOTT BOROFLOAT 33 Technical Dataschott.com
- SCHOTT Components for Industrial PlantsSCHOTT
- ARCHON Industrial Sight Glass SelectionARCHON Industries
- Disc Sight Glass DIN 7080Dumico
- SCHOTT Tubular Gauge Glassschott.com
Request a Project-Specific Glass Review
Send the application conditions, material preference and drawing so the component can be reviewed against the installed function.
- Material: Borofloat Glass
- Application: Level Gauge Sight 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.
Is Borofloat Glass automatically suitable for Level Gauge Sight Glass?
Borofloat Glass appears in the V4.1 recommended material route for Level Gauge Sight Glass, but the exact grade and assembly conditions still require validation. For the Level Gauge Sight Glass glass processing for Borofloat Glass page, final approval requires the actual grade, drawing and service-condition validation.
Which properties of Borofloat Glass matter for Level Gauge Sight Glass?
For Level Gauge Sight Glass glass processing for Borofloat Glass, compare transmission or viewing clarity, thermal expansion and temperature, chemical durability, hardness or impact, seal compatibility, edge strength, cleaning and the required certificate against the application duty.
Which alternatives should be compared with Borofloat Glass for Level Gauge Sight Glass?
For Level Gauge Sight Glass glass processing for Borofloat Glass, DURAN tubular gauge glass or tempered borosilicate DIN 7081 reflex/transparent plate matched to medium and pressure. Record why Borofloat Glass is retained for this exact page.
How should Level Gauge Sight Glass glass processing for Borofloat Glass be manufactured?
For Level Gauge Sight Glass glass processing for Borofloat Glass, Tube/plate forming, precision cut-to-length, end grinding or fire polishing, prism forming, tempering and marking. Material-compatible routes for Borofloat Glass must also be confirmed from the configured material record.
How should Level Gauge Sight Glass glass processing for Borofloat Glass be inspected?
For Level Gauge Sight Glass glass processing for Borofloat Glass, Dimensional/profile inspection, edge and prism visual examination, marking check and assembly leak/pressure test. Include grade traceability and material-dependent acceptance for Borofloat Glass where relevant.
What should an RFQ include for Level Gauge Sight Glass glass processing for Borofloat Glass?
For Level Gauge Sight Glass glass processing for Borofloat Glass, Gauge type, standard/size code, dimensions, pressure, temperature, medium, end finish, gasket and mica protection. Also state whether Borofloat Glass is mandatory or whether ANTGLASS may compare alternative materials.