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English Translations » 【静设备】 » Can a sight glass be installed on a sanitary-grade pressure-

Can a sight glass be installed on a sanitary-grade pressure-rated manhole, when the sight glass extends more than half of the manhole’s diameter?

2019-03-23View Original

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Can a sanitary-grade pressure-rated manhole be equipped with a sight glass?
Reply #22019-03-26
The poster calculated the mirror flanges in accordance with Chapter 17 of HG20582, and selected the mirror glass in line with GB23259-2009. However, if the opening exceeds half of the manhole diameter, it may be impossible to carry out reinforcement calculations in accordance with GB150; in such cases, local analysis and design according to standard 4732 might be required.

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Translated at 2026-07-26 10:08:58

Original: https://bbs.hcbbs.com/thread-2365574-1-1.html

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