boiler sight glass

1.high quality, 2.low price, 3.exact delivery time, 4.perfect service - details see: https://www.machineto.com/boiler-sight-glass-10210875
Place of Origin:Hebei China (Mainland)Brand Name:bright pearlModel Number:220x34x17mmType:Gauge
material:borosilicate glasssample:free  
boiler sight glass
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The series include:

1)Reflex glass

2)Transparent glass

3) Round sight glass

1) Reflex gauge glass

Size:

400 x 34(30) x 17mm,370 x 34(30) x 17mm,340 x 34(30) x 17mm
320 x 34(30) x 17mm,300 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

Working temperature: 260 degree C, Working pressure: 4.0MPa

2) Plain gauge glass

Size:

400 x 34(30) x 17mm,370 x 34(30) x 17mm,340 x 34(30) x 17mm
320 x 34(30) x 17mm,300 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

Working temperature: 260 degree C, Working pressure: 6.3 MPa

3) Round gauge glass

Thickness: 10mm-25mm

Diameter: 50mm - 250mm

Pressure: 6 - 25 bar

Temperature: 250 degree C

Level Gauge Glass Physical Property

Testing ItemStandard 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 diameter2) 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

boiler sight glass
Packaging Detail:carton and wooden case
Delivery Detail:according to your quantity

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