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It’s made from Borosilicate, it is used in lever gauge in boiler for water position.
It is also named: Reflex Gauge Glass, Sight glass, Reflex Glasses
Reflex sight glass, Spares For level Gauge
The category is as follows:
1) Three tendons (four grooves)
2) Two tendons (three grooves)
3) Plan transparent
Three tendons (four grooves)
Size:
340 x 34(30) x 17mm 320 x 34(30) x 17mm,
280 x 34(30) x 17mm
250 x 34(30) x 17mm, 218 x 34(30) x 17mm,
190 x 34(30) x 17mm
165 x 34(30) x 17mm, 140 x 34(30) x 17mm,
115 x 34(30) x 17mm
400 x 34 x 17mm,370 x 34 x 17mm
300 x 34 x 17mm
400x 34x 17mm 370x 34 x 17mm 300 x 34 x 17mm
The other size is optional or according to the requirements of customers.
Working temperature: 260 °C, Working pressure: 4.0MPa
Two tendons (three grooves)
Size:
340 x 34 x 17mm 320 x 34 x 17mm, 280 x 34 x 17mm
250 x 34 x 17mm, 218 x 34 x 17mm, 190 x 34 x 17mm
165 x 34 x 17mm, 140 x 34x 17mm, 115 x 34 x 17mm
280×34×22mm, 280×28×17mm, 250×34×20mm, 250×34×22mm,
The other size is optional or according to the requirements of customers.
Working temperature: 260 °C, Working pressure: 4.4MPa
Transparent plane
Size:
340 x 34 x 17mm, 320 x 34 x 17mm, 280 x 34 x 17mm
250 x 34 x 17mm, 218 x 34 x 17mm, 216 x 34 x 17mm
190 x 34 x 17mm, 165 x 34 x 17mm, 215 x 34 x 22mm
218 x 38 x 23mm, 190 x 38 x 23mm, 165 x 38 x 23mm
The other size is optional or according to the requirements of customers.
Working temperature: 260 °C, Working pressure: 8.0 MPa
The material:Borosilicate Glass
Level Gauge Glass Physical Property | |
Testing Item | Standard Rules |
1. Appearance | 1) Air bubble:Diameter≤0.5mm,in the 10mm x 10mm area the quantity must be ≤3.Diameter from 0.5mm to 1.5mm dispersive air bubble,there is less 2 on the sight plane and less 5 on the No-sight plane. Their distance must be >40mm.The air bubble of Diameter from 1.5mm to 2mm ≤3 on the No-sight plane. Their distance must >40mm.On the sight plane, The distance to the side in 7.5mm,the air bubble of the diameter<1mm mustn’t be more 2.2) The glass don’t allow slag and scrap iron,etc. impurity.3) Stripe : don’t allow have palpable filaceous and pectinate stripe on the sight plane.4) Cockle: In the side face,don’t allow have the cockle of depth .>1mm.5) Crack: don’t allow have crack.6) Scrape: On the sight plane and in the 7.5mm to edge,the scrape of less than 10mm don’t allow more 2 strips.7) The sight plane must be polishing,and sealing side must be rubbing and polishing. |
2. Colour and Lustre | It should be no color and transparent,and with its self tine green is allowed. |
3. Water-resistance | Cooked in the water for 5 hours,then weigh up ,then titration with 25ml 0~31 ug/g |
4. Alkali-resistance | Cooked in the 0.5N NaoH for 3 hours,then Weigh up,weightlessness should be ≤75 mg/dm2 |
5. Temperature-resistance impacts capability | Put it into electric cooker,keep for 7min under the temperature of 260°C±1°C,then,put into the water of 20±1°C,it should not crack |
6. Bend-resistance | ≥80 MPa |