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Quartz Sight Glasses
Price: $595.64
- Stock item: Available
- Category: Circular Sight Glasses
- 30-day return policy. More details
Manufactured in Quartz Glass, these sight glasses are used in several applications where the operating temperature ranges above 1000°F, and thermal shock is greater than 280 F
Special dimensions of glasses are available upon request, where the minimum diameter is 10mm, and the maximum diameter is 350mm. The thickness can be manufactured to a minimum of 3mm and a maximum of 25mm.
Technical data
| PHYSICAL PROPERTY | TESTING METHOD | VALUE OBTAINED |
|---|---|---|
| Thermal Expansion Coefficient | ISO 7991 | 6.2 x 10-7 ºK |
| Density at 25ºC | SN 7005 13 | 2.20 g/cm3 |
| Refractive Index (λ = 587.6nm) | nd | 1.425 |
| Transformation Temperature | ISO 7884-8 | 1500ºC |
| Highest Short-Term Working Range | ISO 7884-7 | 1450ºC |
| Thermal Shock Resistance | ISO 7884 | 500 K |
| Young's Modulus | 68 MPa | |
| Poisson Constant | 0.17 | |
| Thermal Conductivity 20ºC - 100ºC | λ | 0.003 CAL |
| Photoelastic Constant | DIN 52314 | (4.00 x 10-6)(mm2/N) |
| Specific Electric Resistance | DIN 52326 | 250ºC |
| Dimensional Tolerances Diameter | DIN 8902 | PASS (SEE ANNEX B1) |
| Dimensional Tolerances Thickness | DIN 8902 | PASS (SEE ANNEX B1) |
Technical data
| OPTICAL PROPERTY | TETSING METHOD | VALUE OBTAINED |
|---|---|---|
| Bubble on Glass | DIN 7080 | PASS (SEE ANEX A1, BELOW IN THE DATA SHEET) |
| Markings on Glass | DIN 7080 | NO MARKING |
| Edge Tolerances (Chamfer on Glass) | DIN 7080 | PASS (SEE ANEX B2, BELOW IN THE DATA SHEET) |
| Viscous Knots | DIN 7080 | NON-VISIBLE NO EYE |
| Crystaline Inclusions | DIN 7080 | LESS THAN 0.2MM |
QUARTZ SIGHT GLASSES - PRESSURE RATING
| Glass Diameter | Glass Thickness | Visible Diameter | Pressure Resistance (BAR) | Pressure Resistance (PSI) |
|---|---|---|---|---|
| AMERICAN UNITS, MOST STANDARD SIZES | ||||
| 4" | 3/4" | 3-1/4" | 25 BAR | 362 PSI |
| 5" | 3/4" | 4" | 16 BAR | 232 PSI |
| 6" | 3/4" | 5" | 10 BAR | 145 PSI |
| 6-3/4" | 3/4" | 5-3/4" | 10 BAR | 145 PSI |
| 8-3/8" | 3/4" | 7-3/8" | 8 BAR | 116 PSI |
| INTERNATIONAL UNITS, MOST STANDARD SIZES | ||||
| 63 mm | 10 mm | 48 mm | 16 BAR | 232 PSI |
| 80 mm | 12 mm | 65 mm | 16 BAR | 232 PSI |
| 100 mm | 15 mm | 80 mm | 16 BAR | 232 PSI |
| 125 mm | 15 mm | 100 mm | 10 BAR | 145 PSI |
| 125 mm | 20 mm | 100 mm | 16 BAR | 232 PSI |
| 150 mm | 20 mm | 125 mm | 10 BAR | 145 PSI |
| 150 mm | 25 mm | 125 mm | 16 BAR | 232 PSI |
| 175 mm | 20 mm | 150 mm | 10 BAR | 145 PSI |
| 175 mm | 25 mm | 150 mm | 16 BAR | 232 PSI |
| 200 mm | 20 mm | 175 mm | 8 BAR | 116 PSI |
| 200 mm | 25 mm | 175 mm | 10 BAR | 145 PSI |
| 200 mm | 30 mm | 175 mm | 16 BAR | 232 PSI |
| 250 mm | 25 mm | 225 mm | 8 BAR | 116 PSI |
| 250 mm | 30 mm | 225 mm | 10 BAR | 145 PSI |
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