It is a kind of flange pressure manhole, also known as pressure manhole. The manhole cover is composed of a whole piece of glass clamped by the flange, which is more convenient to observe the operation of the material in the equipment container. The working pressure is about 0.25MPa, which can be customized according to customer requirements. When installing the nuts on the manhole cover, apply force evenly in pairs to prevent glass damage caused by deformation of the cover or uneven force. All pressure vessels or non-pressure vessel manholes adopt quick-opening structure, which is convenient and safe to open, beautiful and practical in appearance.
product properties
Structure: Round, quick-opening structure, connected by two flanges. A sight glass is installed on the manhole cover. Material quality: SUS304, 316L, etc. Size: Nominal diameter DN150mm—600mm (Non-standard products can be processed according to user requirements for drawings and samples) Smoothness: internal and external surface mirror polished
Scope of application
1. Weakly corrosive materials in chemical and petrochemical production, such as water, ammonia, oil, hydrocarbons, etc.
2. Corrosive materials in chemical production, such as: caustic soda, concentrated sulfuric acid, carbonic acid, acetic acid, ester acid, etc.
3. Low-temperature materials in refrigeration, such as liquid methane, liquid ammonia, liquid oxygen and various refrigerants.
4. Materials with hygiene requirements in the production of light industrial foods and pharmaceuticals, such as beer, beverages, dairy products, grain slurry medical supplies, etc.
The clip-on mirror is one of the main accessories on the industrial pipeline installation. The clip-on mirror installed on the pipeline can observe the flow reaction of liquid, gas, steam and other media in the pipeline at any time, monitor production, and avoid accidents during the production process. . It is often used in the production pipelines of petroleum, chemical, chemical fiber, pharmaceuticals, etc.
The difference between the clamp mirror and the conventional straight-through mirror is the reduction in the number of fastening screws, that is to say, the pressure is much inferior. Due to the limitation of the structure style, the diameter above DN80 is very rare because such a large diameter is basically not available. What is the use of pressure. And the small caliber is relatively high.
The main material of the clamp mirror is carbon steel 304 stainless steel 316321316L and so on.
The use temperature of the clip-on mirror depends on the material of the window used: tempered glass 0-200 degrees; high borosilicate glass 0-450 degrees; quartz glass 0-600 degrees.
The most commonly used connection method for the clip-on mirror is flange thread welding, etc. Other connection methods can also be customized.
The sealing gasket of the clamp mirror adopts polyethylene PTFE sheet
Description of the glass gauge
contact us
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Email: landlee@sightglassfactory.com
NB/T47017-2011 pressure vessel sight glass, also known as stainless steel equipment sight glass, stainless steel flange sight glass. It is a kind of stainless steel used to observe the change of medium in chemical, petroleum, oil refining, food, cosmetics, medicine and other industrial equipment containers. glass. The operator adjusts or controls the medium according to the situation displayed by the pressure vessel sight glass, so as to ensure that the medium in the vessel is always within the normal range to ensure the safety of production and the quality of the product.
In addition, liquefied gas storage tanks, tank trucks, gas-liquid reactors, reaction kettles and other containers need to be equipped with pressure vessel sight glasses to prevent accidents due to overfilling or unbalanced material reactions due to overfeeding.
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