Liquid indicator glass / sight glass

Its 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) Reflex glass
2) Plain transparent glass
3) Round sight glass

1) Reflex Sight glass/gauge glass - three tendons (four grooves)
 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
 400 x 34 x 17mm, 370 x 34 x 17mm, 300 x 34 x 17mm
 The other size is optional or according to the requirements of customers.
 Working temperature: 260 , Working pressure: 4.0MPa

2) Plain transparent sight glass/gauge glass
  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 , Working pressure: 8.0 MPa

3) Round sight glass
Thickness: 10mm-25mm
Diameter: 50mm - 250mm
Pressure: 6 - 25 bar
Temperature: 250

Packing: Each piece in a box, then in cartons.