Glass tube quick installation water level gauge

Structure principle of liquid level gauge

The upper and lower valves of the instrument are equipped with quick fitting connectors, which are connected with the container to form a connector. The height of the liquid level in the container can be directly read through the glass plate.

The upper and lower valves of the instrument are equipped with steel balls. When the glass plate is damaged by accident, the steel balls block the passage under the pressure in the container, so that the container will be automatically sealed to prevent the liquid in the container from continuing to flow out.

There is a blocking hole screw at the valve end of the instrument, which can be used for sampling, or for discharging the remaining liquid in the instrument during maintenance.

Characteristics of glass tube level gauge

● the reading is clear, intuitive and reliable.

● simple structure and convenient maintenance.

● durable.

Glass level gauge

Glass level gauge


contact us 

Tel/whatsapp: +86 13373730761

Email: landlee@sightglassfactory.com


Tube glass viewing

Tube glass viewing

Characteristics of quartz glass

Characteristics of quartz glass


contact us 

Tel/whatsapp: +86 13373730761

Email: landlee@sightglassfactory.com



Transparent glass plate level gauge

HG5 glass plate liquid level gauge is produced according to the hg5-1364 ~ 1370-80 standard of the former Ministry of chemical industry. It is suitable for directly indicating the medium level in various towers, tanks, tanks and other containers. Safety steel balls are installed in the upper and lower valves of the instrument. When the glass plate is accidentally damaged, the steel balls can automatically close the liquid flow channel under the pressure in the container to prevent the liquid from continuing to flow out. Main technical parameters of transparent glass plate level gauge:

Measuring range (installation center poly L): 300, 500, 800, 1100, 1400, 1700mm

Working pressure: 2.5, 4.0Mpa, 0.6MPa (for R type)

Material: carbon steel, stainless steel

Operating temperature: -20 ~ +200 ℃

Automatic closing pressure of steel ball: ≥ 0.2MPa

Factory direct sale stainless steel flange sight glass

The sight glass products produced by our company meet the industry standards, and have the advantages of good transparency, beautiful appearance, accurate tolerance, pressure and temperature resistance, explosion-proof and crack-proof, etc. They are widely used in metallurgy, chemical industry, coal, heavy industry, shipbuilding, light industry and other fields . At present, the mirror glass produced by our company is sold to various cities in China, and has been exported to more than 20 countries and regions such as the United States, the United Kingdom, Japan, Germany, Thailand, the Netherlands, South Africa, Syria, Turkey, and Nepal.

SUS304 glass tube sight glass tube sight glass

Xinxiang Xinbo Glass and Quartz Products Co., Ltd. is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry.

Stainless steel sight glass tube glass tube sight glass: used for draining or backflow before receiving tank, cooling water and other liquid pipelines to observe the liquid flow. Valve body material: carbon steel, stainless steel, rubber-lined, fluorine-lined, etc. Nominal pressure range: 2.5 and 6 kg/cm2.


Working temperature: metal ≤200℃, plastic ≤80℃, allowable rapid temperature change of 80℃


NB/T47017-2011sight glass

The sight glass products produced by our company meet the industry standards, and have the advantages of good transparency, beautiful appearance, accurate tolerance, pressure and temperature resistance, explosion-proof and crack-proof, etc. They are widely used in metallurgy, chemical industry, coal, heavy industry, shipbuilding, light industry and other fields . At present, the mirror glass produced by our company is sold to various cities in China, and has been exported to more than 20 countries and regions such as the United States, the United Kingdom, Japan, Germany, Thailand, the Netherlands, South Africa, Syria, Turkey, and Nepal.

Sanitary Union Welding Sight Glasses

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

JB593-64 Flat Flange Sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Stainless steel container sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Factory direct sale stainless steel flange sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Clamp type glass tube sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Fluorine lined sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Straight pipe through glass sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Stainless steel through sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

Straight pipe through glass sight glass

Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

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Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

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Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

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Xinxiang Xinbo Glass Quartz Products Co., Ltd.: is a professional chemical glass instrument production company integrating development, design, production, sales and after-sales service. The company has a modern management team, relying on advanced management methods and service concepts, relying on local government policies, talents, environment and other advantages, has become a well-known enterprise in the industrial glass instrumentation industry. The company’s quartz glass tubes, quartz glass sight glasses, quartz flanges, high borosilicate glass sight glasses, tempered glass sight glasses, liquid level gauge glass plates, stainless steel flange sight glasses and other products have formed the industrial boiler pipeline industry. Serialized products used. The powerful design team can undertake the processing and customization of various non-standard and unconventional glass mirrors and flange glass.

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