The neck sight glass is also called pressure vessel sight glass.The difference between the neck sight glass and the normal sight glass is that there is a section of pipe at the bottom of the sight glass, which is called "neck". The function is to separate the sealing of the sight glass from the welding port, so as to minimize the influence of welding stress on the sealing surface of the sight glass. the "neck" part of the sight glass is also divided into standard type and non-standard type.
Suitable conditions
1. Weak corrosive materials in chemical and petrochemical production, such as water, ammonia, oil, hydrocarbon, etc.
2. Corrosive materials in chemical production, such as caustic soda, concentrated dilute 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. Light industrial food, materials with health requirements in pharmaceutical production, such as: beer, beverage, dairy products, food pulp medical supplies, etc.
technical parameter
Main material: A3 304 304L 316 316L FRP lining
Window material: toughened borosilicate glass quartz glass
Sealing surface: RF, FF, MFM, TG
Flange standard:HG GB HGJ JB ANSI JIS DIN BS NF
Manufacturing inspection standard: HGJ501-502-86
Working temperature: carbon steel: - 30 ℃ ~ + 350 ℃ stainless steel: - 80 ℃ ~ + 480 ℃
Appearance: carbon steel: anticorrosive paint stainless steel: pickling treatment or anticorrosive paint
|
DN |
20 |
25 |
40 |
50 |
65 |
80 |
100 |
125 |
|
L |
145 |
189 |
234 |
278 |
278 |
308 |
308 |
364 |
|
H |
200 |
260 |
260 |
320 |
320 |
360 |
360 |
440 |
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