Dear my friend,
Nice to meet you. This is Rose from Hengshui Aohong Technology Co.,Ltd.
We are a professional factory of gauge glass & sight glass. Our products have been exported to many countries.
The products are as follows:
1. Reflex gauge glass ( 3 lines 4 grooves ) & Transparent gauge glass
340 x 34(30) x 17mm 320 x 34(30) x 17mm 280 x 34(30) x 17mm 250 x 34(30) x 17mm
220 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 420 x 34 x 17mm 370 x 34 x 17mm 300 x 34 x 17mm
and some other special size gauge glass can be customized according to your drawings.
2. Sight glass: round, Rectangular & square , tubular sight glass
3. Glass road stud,reflective glass road studs, reflective road studs.
4. Material: tempered soda lime glass, tempered borosilicate glass, tempered borosilicate 3.3, quartz.
5. Packing: paper box, carton , plywood case. or according to requirement.
6. Gasket: asbestos rubber gaskets ,non-asbestos rubber gaskets, graphite gasket,PTFE gasket,micashield .
7. Printing: we can print on the glass according to requirements.
Any question, please feel free to tell me. I will do my best!
Thanks&Best regards,
Transparent type is also manufactured from "extra-hard" borosilicate glass. The surfaces on both sides are finely smooth and ensure optimal transparency.
A) One is as same with reflex Gauge Glasses,use molds to make the semi-finished products,afterwards,ground and polish the two side to ensure optimal transparency. By this manufacturing technique,the definition isn't good.
B)The other manufacturing technique is made of High Borosilicate sheet of 17mm thickness, cut the glass sheet according the detailed size and polish the side face for the smooth.This manufacturing technique glass is very clear,but the goods cost is higher.
It can be used with all media at service conditions up to 6MPa and temperatures up to 430 degrees centigrade.
Transparent Gauge Glass Used in Industry Pipe
SIZE TypeA Weight
L B S g/piece
I 115 30 17 118
II 140 30 17 146
III 165 30 17 176
IV 190 30 17 200
V 220 30 17 237
VI 250 30 17 265
VII 280 30 17 303
VIII 320 30 17 334
IX 340 30 17 359
X 370 30 17 391
SIZE TypeB Weight
L B S g/piece
0 95 34 17 110
I 115 34 17 132
II 140 34 17 162
III 165 34 17 195
IV 190 34 17 228
V 220 34 17 264
VI 250 34 17 301
VII 280 34 17 338
VIII 320 34 17 387
IX 340 34 17 410
X 370 34 17 461
Green Plain Gauge Glass
Transparent Gauge Glass Used in Industry Pipe
This green gauge glass is a kind of used in the field of petroleum, chemical industry, metallurgy, electric power, food, medicine.
In the other two sides fired green glass glaze. According to the optics refraction principle, in the absence of liquid, from the glass facade, can clearly see the green color on the surface. When the fluid in the liquid level meter, the refractive index of glass and liquid is the same, the color will not be reflected, can see the white.
The sizes are all customized according to clients' requests.
Round sight glass, also called round gauge glass and sight glass disc, commonly uses the material of soda-lime glass, borosilicate glass, aluminosilicate glass and quartz glass. We suggest different material according to environmental conditions, such as temperature, pressure, acid and alkali.
Soda-lime glass working temperature is up to 230 �°C, but it is the most inexpensive material. Borosilicate glass is particularly used in aggressive environment, such as acid and alkali. The working temperature is up to 400 �°C. Aluminosilicate glass can resist acid and alkali better than borosilicate glass and the working temperature can reach 650 �°C. Quartz glass is the best material, whose working temperature can reach 1100 �°C.
Round gauge glass is commonly used in industry, chemical, petrol and medicine pipes and flanges for observing the liquid flow and liquid level.
Round glass Data Sheets
Quartz round glass can be processed and produced according to customer requirements, using different materials of JGS1, JGS2 and JGS3.
Round Gauge Glass for Observing Liquid Flow and LevelRound Gauge Glass for Observing Liquid Flow and Level
TAGS:Transparent Gauge GlassQuartz Glass
Reflex Level Gauge
WORKING PRINCIPLE
Reflex glass level gauges working principle is based on the light refraction and reflection laws.Reflex Level GaugeReflex glass level gauges use glasses having the face fitted towards the chamber shaped to have prismatic grooves with section angle of 90�°. When in operation, the chamber is filled with liquid in the lower zone and gases or vapors in the upper zone; the liquid level is distinguished by different brightness of the glass in the liquid and in the gas/vapor zone. The reflex level gauges do not need a specific illumination: the day environmental light is enough. Only during the night an artificial light must be provided.
The different brightness in the two zones is obtained as explained below:
LIQUID ZONE
This zone appears quite dark when the gauge is in operation and lighted as above said.
Given the construction, most of the environmental light rays incident on the external face of the glass are quite perpendicular to said face and, therefore, not deviated by the glass. These rays reach the glass/liquid interface with an inclination of approx. 45�°. The critical angle glass/liquid is always superior to 45�°. Therefore the rays incident within the critical angle (practically the totality) are refracted within the liquid and, since the internal walls of the gauge chamber are not reflecting, the rays cannot be seen from the outside. In fact the zone will appear dark, nearly black, to the observer.
GAS/VAPOR ZONE
This zone appears almost silver bright to the observer.
As for the liquid zone, the light rays reach the glass/gas-vapor interface with an angle around 45�°. Since this angle is greater than glass/gas-vapor critical angle, the rays are not refracted , but totally reflected making 90�° turn, thus reaching the nearest glass/gas-vapor interface again with angle of 45�°. For same reason they will be reflected and turned by 90�° towards the observer, to whom the zone will appear silver bright.
APPLICATIONS
Reflex glass level gauges can be used in most of the cases and offer great advantages in terms of: low initial cost, low operating cost, easy level reading.
Reflex level gauges cannot be used in certain cases as for example:
when the separation level between two liquids has to be read (interface).
when besides the level indication, the observation of the liquid colour is required.
when the process fluid is high-pressure water steam, since in this case the glass must be protected from the solvent action of the boiler water by using mica shields.
when the process fluid is such that can corrode the glass (e.g. high temperature alkaline solutions or hydrofluoric acid), since ica shields or Polytrifluorochloroethylene shields must be used to protect the glass.
Transparent Level Gauge
Working Principle
Transparent level gauges are always fitted with two plate transparent glasses between which the fluid is contained. The fluid level is indicated as the result of the different transparency of the two media and in some cases (for water steam), by conveying upwards on to the surface of separation (between liquid and gaseous substances) a source of light located at the back of the gauge, the rays of which are totally reflected down to the observer.Transparent Type Level Gauge
We can provide the corresponding level glass, please refer to the related products.
APPLICATIONS
Transparent level gauges are suitable for almost all installations.
In fact they permit:
the use of mica shields or Polytrifluorochloroethylene shields to protect the glass from the corrosive action of the process fluid
the observation of interface
the observation of the liquid colour
This instrument consists of a metal body, machined to have an internal chamber and one or more front windows (on each side of the gauge). On each window a special high resistance plate transparent glass is applied with sealing joint and metal cover plate hold by bolts and nuts.
The chamber is connected to vessel with cross fittings and flanged, threaded or welded ends. Usually, between the instrument and its connecting ends, valves are fitted to consent shut-off piping and to disassemble the level gauge without to empty the vessel. Drain valves can also be fitted to cross fittings device.
To avoid leakage in case of glass breakage, safety ball-check device can be provided in cross-fittings or shut-off valves. This kind of indicator is suitable for water/steam. To protect glass surfaces from corrosive action of the process fluid, Transparent Level Gauges can be fitted with Mica shields or Polytrifluorochloroethilene shields. This kind of indicator is suitable for liquids colorless and very fluid.
In some case (i.e. for water / steam) the best reading is obtained by conveying upwards on the surface of separation (liquid/steam or vapor interface), a source of light, located on the back of the gauge, the rays of which are totally reflected down to the observer.
Borosilicate glass according to DIN 7080.
For compressive stress with temperatures borosilicate circular sight glass up to max. 280 degrees Celsius,
Where a greater degree of chemical resistance or higher operating temperatures are required, a borosilicate glass should be specified. In a toughened form, temperatures up to 315 degrees Celsius are possible whilst annealed glass may be used up 400 degrees Celsius continuously with a short term maximum of 500 degrees Celsius.
In addition to standard DIN sizes, glasses are available in a wide range of diameters up to 60mm thick (see annular edge sight glass).
Soda Lime glass according to DIN 8902.
For compressive stress with temperatures borosilicate circular sight glass up to max. 150 degrees Celsius,
This is the most commonly used material due to its low cost. It can be easily toughened to effectively increase the mechanical strength of annealed glass by up to five times.
We have plant and equipment, including our water-jet cutting machine and CNC machining center, to produce diameters between 3mm and 1500 mm, and thicknesses up to 25m.
Quartz glass according to customer's requirements, made from JGS1, JGS2, JGS3, on production.
Quartz Round Glass
Quartz Round Glass
Technical Notes:
The thickness of the various non-standard aluminosilicate glass can be customized.
Other sizes can be customized.
TAGS:Quartz Round Glass
We can provide high borosilicate glass tube,quartz glass tube and glass rode.
We also can apply some further processing like trim cutting, fire polishing, bending, pinching, grinding and others according to customers' requirements.
Borosilicate 3.3 Rod
High Borosilicate 3.3 Glass Tube
Borosilicate glass has a wide variety of uses ranging from cookware to lab equipment as well as a component of high quality products such as implantable medical devices and devices used in space exploration
Sizes: OD: 4~315mm Wall Thickness: 0.8~12mm, Length: 1500mm 1800mm.
Red-line glass tube
This borosilicate tubular gage glass is designed with a red line between two white lines. The color contrast makes it easier to read the liquid level. This is achieved by the application of specially developed paints that are bonded to the glass without etching.
Borosilicate 3.3 Rod
High BorosilicateGlass 3.3 Glass rod
3.3 High borosilicate glass rod is one kind of special glass which has first class level of hydrolysisresistance performance, widely used in laboratory and chemical plants, in recent years in the solarheating device on the application have developed rapidly.
Borosilicate 3.3 Rod
Aluminosilicate Glass refers to glass that has aluminum oxide in its composition. It is crystal clear and has good chemical stability, electrical insulation, mechanical strength and low thermal expansion coefficient. It is widely used for manufacturing gauge glass and sight glass.
No surface defects
Great chemical resistance
Allowing for high operating temperature of up to 600 C
Hydrolytic resistance
Acid & alkali resistance
A full range of sizes
Special discounts for large orders and various promotion campaigns
Specification
Color: colorless or slightly yellow
Shape: circular, rectangular
Density: 2.62 2.67 g/cm3
Transmissivity: 91.8%
Refractive index: 1.5325 (yellow)
Shock temperature: 370 C
Softening temperature: 920 C
Bending strength: 180 220 MPa
