Gauge Glass
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Gauge Glass/Level Sight Glass Used in Industry Pipe
Gauge glass also named sight glass or level gauge glass. According to the application requirement for pressure and temperature, different material is used. Each type max working temperature is shown below.
Soda-lime glass (window glass) widely used for lower cost, working temperature up to 230 °C.
Borosilicate glass particularly useful for applications in aggressive environments (acids, alkali, water vapor), working temperature up to 350 °C.
Aluminosilcate glass have similar properties to borosilicate glass, but with better chemical resistance and higher permissible operating temperature of up to 600 °C.
Quartz glass has long range light transmittance (from ultraviolet to infrared), and its operating temperature is up to 1100 °C.
Classification:
Round Sight glass:
Description
It is mainly used to observe the level of the boiler or other equipment filled with liquid, also can be used as watching glass window for thermal and chemical reaction.
There are four pieces of different sizes sight glass.
GG-01: Different dimension round sight glass with clear surface and well grinding edge finish used in flange.There are two pieces of round sight glass with hole in the center.
GG-02: Round sight glass with a hole in the center make it convenient to clear the surface of the glass.
There are two pieces of round sight glass of 10.18 mm and 30.47 mm thickness.
We can produce wide range dimension of round sight glass.
Dimensions of round sight glass.
Special requirement is available, such as dip hole in center, polishing edge and so on.
Dimensions of round sight glass
Items Diameter (mm) Thickness (mm) Permissible operating pressure (bar)
RSG-1 30 15 200
RSG-2 35 7 25
RSG-3 40 12 50
RSG-4 45 10 40
RSG-5 45 12 50
RSG-6 50 10 25
RSG-7 50 12 40
RSG-8 55 10 25
RSG-9 60 10 16
RSG-10 60 12 25
RSG-11 60 15 40
RSG-12 63 8 8
RSG-13 63 10 16
RSG-14 63 12 25
RSG-15 63 15 40
RSG-16 70 12 16
RSG-17 70 15 25
RSG-18 80 10 10
RSG-19 80 12 16
RSG-20 80 15 25
RSG-21 80 20 40
RSG-22 90 10 8
RSG-23 95 15 16
RSG-24 100 10 7
RSG-25 100 15 16
RSG-26 100 20 25
RSG-27 100 25 40
RSG-28 113 15 10
RSG-29 125 15 10
RSG-30 125 20 16
RSG-31 125 25 25
RSG-32 125 30 40
RSG-33 135 25 25
RSG-34 150 15 8
RSG-35 150 20 10
RSG-36 150 25 16
RSG-37 150 30 25
RSG-38 175 20 10
RSG-39 175 25 16
RSG-40 175 30 25
RSG-41 200 20 8
RSG-42 200 25 10
RSG-43 200 30 16
RSG-44 250 25 8
RSG-45 250 30 10
RSG-46 265 30 8
Transparent level gauge glass:
Transparent (smooth) level gauge glass is used to observe the liquid level of the boiler or other liquid tanks. Due to the boiler water high temperature and pressure working environment, borosilicate or aluminosilcate glass is used to meet the requirement.
There is tree piece of thick strip gauge glass with clear surface and polishing edge.
GG-03: Strip gauge glass are used in industry to observing the flow of liquid and liquid level.There is tree piece of strip gauge glass of heavy thickness.
GG-04: Thick strip gauge glass make it can withstand acid, alkali, high temperature and high pressure.
Types:
According to the width and thickness of the glass, mainly four types are classified.
type A: width 30 mm, thickness 17 mm.
type B: width 34 mm, thickness 17 mm.
type H: width 34 mm, thickness 22 mm.
type TA 28: width of 27.6 mm, 16.8 mm.
Dimensions:
There is a drawing of transparent level gauge glass to describe the length, height and width.
GG-05: Transparent level gauge glass drawing, the L, W and H in following chart are according to this picture.
Dimensions of transparent level gauge glass
Items TYPE A TYPE B TYPE H TYPE TA 28
L W H L W H L W H L W H
TLGG-1 115 30 17 115 34 17 - - - 113 27,6 16,8
TLGG-2 140 30 17 140 34 17 140 34 22 - - -
TLGG-3 165 30 17 165 34 17 165 34 22 163 27,6 16,8
TLGG-4 190 30 17 190 34 17 190 34 22 188 27,6 16,8
TLGG-5 220 30 17 220 34 17 220 34 22 218 27,6 16,8
TLGG-6 250 30 17 250 34 17 250 34 22 248 27,6 16,8
TLGG-7 280 30 17 280 34 17 280 34 22 278 27,6 16,8
TLGG-8 320 30 17 320 34 17 320 34 22 318 27,6 16,8
TLGG-9 340 30 17 340 34 17 340 34 22 338 27,6 16,8
TLGG-10 - - - 370 34 17 - - - - - -
Glasses are all made strictly according with DIN7081.
Gaskets and mica sheet can also be provided together.
Working temperature and pressure
Borosilicate glass can withstand up to 400 °C, 180 bar. Aluminosilcate glass can work up to 660 °C, 180 bar.
Reflex gauge glass:
Reflex gauge glass are used to read the water level of the boiler or tank. It have 3, 4 grooves longitudinal printed on the glass. The grooves in water can help increase the angle of refraction, so the visibility of the liquid level is much better then without grooves.
With the grooving increases the angle of refraction which makes the visibility of the liquid level is much better than when using smooth glass.
A pieces of reflex gauge glass with one groove is on the ground.
GG-06: The reflex gauge glass with one groove makes the liquid level clear.Two pieces of reflex gauge glass with three grooves of different dimension is on the ground.
GG-07: The reflex gauge glass with more grooves can be supplied together with gasket to seal and buffer the extrusion.
Types
type A - width 30 mm, thickness 17 mm.
type B - width 34 mm, thickness 17 mm.
type H - width 34 mm, thickness 22 mm.
Type C - width of 20 mm, thickness 12 mm.
Type D - width 25 mm, thickness 15 mm.
Dimensions:
There is a drawing to describe the length, height and width of the reflex gauge glass.
GG-08: Reflex gauge glass drawing, the L, W and H of reflex gauge glass in the following chart are according to this picture.
Dimensions of reflex gauge glass
Size TYPE A TYPE B TYPE H
L W H L W H L W H
RGG-1 95 30 17 95 34 17 - - -
RGG-2 115 30 17 115 34 17 115 34 22
RGG-3 140 30 17 140 34 17 140 34 22
RGG-4 165 30 17 165 34 17 165 34 22
RGG-5 190 30 17 190 34 17 190 34 22
RGG-6 220 30 17 220 34 17 220 34 22
RGG-7 250 30 17 250 34 17 250 34 22
RGG-8 280 30 17 280 34 17 280 34 22
RGG-9 320 30 17 320 34 17 320 34 22
RGG-10 340 30 17 340 34 17 340 34 22
RGG-11 - - - 370 34 17 - - -
Glasses are all made strictly according with DIN7081.
Gaskets and mica sheet can also be provided together.
Working temperature and pressure
Borosilicate glass can withstand up to 400 °C, 180 bar. Aluminosilcate glass can work up to 660 °C, 180 bar.
Chemical and physical properties
1. Chemical composition SiO2 AL2O3 B2O3 Na2O + K2O
80.00% 2.8% 12.8% 3.8%
2.Chemical Durability Water-resistance Acid-resistance Alkali resistance
<0.5 mg/cm2 <0.5 mg/cm2 <80 mg/cm2
3.Thermal stability △T150 °C, temperature <260 °C
4.Bending strength ≥1100 kgf/cm2
5.Hydraulic power -10°C, 16 kg/cm2
6.Transmittance ≥90 %/mm2
7. Appearance
Air bubble:
Diameter ≤0.5 mm, in 10 mm × 10 mm area the quantity ≤3.
Diameter from 0.5 mm to 1.5 mm dispersive air bubble, there is less than2 on the sight plane and less than 5 on the No-sight plane. Bubble distance > 40 mm. The air bubble of diameter from 1.5 mm to 2 mm ≤3 on the No-sight plane. Their distance > 40 mm.
Do not contain slag and scrap etc.
Stripe: don't have palpable filaceous and pectinate stripe on the sight plane.
Cockle: In the side face, don't have the cockle of depth > 1 mm.
Crack: don't have crack anywhere.
YuanBo Engineering Co., Ltd.
Activity:
Customized Glass Products to Meet Specific Requirements YuanBo Engineering Co., Ltd. located in industry zone No.88, Hengshui city, Hebei province, China, specializes in producing high quality glass products for more than 10 years. We have technically advanced machinery, skillful workers as well as professional salesman. Our main products cover all kinds of glass products, such as gauge glass, optical glass, step glass, glass disc, glass tube, laboratory glass, glass rod and glass panel. We can customize according to your requirements and make sure the high quality, tight tolerance as well as the short delivery time at the same time. Various kinds of glass disc, glass panel, step glass and gauge glass are on the ground. We can produce all kinds of glass products according to your requirements.There are nine kinds of lab glassware with blue liquid in them. We accept customizing all kinds of lab and industry glassware. Wide range of use Glass products are widely applied in daily life, industry and science thanks to their advantages. Nowadays, people pay more and more attention to environmental consciousness. Glass products are harmless to environment during both production and usage, so that they meet the requirements of some environmental friendly enterprises. Besides, the glass material have stable chemical properties. It does not react with most acid and alkali. Its rust resistance is stronger than stainless steel and wooden. Glass products are popular in industry, especially chemical industry. What's more, glass product is hard to be contaminated and easy to clean because of its smooth surface good physical properties. They are widely used in chemistry, biology and medicine science. The last but not least, glass products light transmittance can not be achieved by other material. Therefore, glass products are widely used in light, instruments, buildings and so on. We can conclude from the above that our glass products are used in wide range, such as daily life used light, glass shelf and table, glassware and instruments in science laboratory and industry boiler and pipes. Why choose YuanBo Engineering Co., Ltd. YuanBo Engineering Co., Ltd. specializes in producing glass products for more than ten years. We have payed attention to best quality and service. In order to make sure that, we have a professional team and use advanced equipment. Best quality products We use the suitable material as per your application and requirements. Our quartz glass material silicon dioxide content is up to 99%, which makes sure the good chemical, mechanical and optical properties of glass. We can make sure the tight tolerance and we can also achieve high accuracy as tiny as ±0.05 mm to meet your requirements for glass products used in precise instruments. In order to make sure the high quality of products, we have precision detection by advanced equipment. Advanced equipment We have professional and advanced equipment to ensure the high quality products with clear surface, well ground edge and tight tolerance. Our equipment includes glass grinding machine, cutting machine and so on. This is a set of glass grinding machine with blue coating. We have the advanced grinding machine to make sure the quality of products.This is a set of glass polishing machine. We use the first class polishing machine so that our glass products have clear, no bubble, no cracking surface.Our office and our professional sales team. Professional team and first class service We have technical expert group who concentrates in studying the technology and improve the technology. They make sure us to follow the most advanced technology, reduce our cost and improve quality at the same time. We have skillful and responsible workers. They work carefully during the whole process of production. Our professional salesman have good knowledge of product technology and specification. They can communicate with customer in English fluently and know well about the import and export operation steps. Our after-sale service is also the first class. We can supply professional technique support and service for your installation and maintenance. If you are not satisfied with our glass products, please contact us without hesitation. Our after-sale service will offer you most satisfactory solution.
